COLDWATER RIVER
Sensitive Habitat Inventory and Mapping and Aquatic Habitat Index
Prepared By: Ecoscape Environmental Consultants Ltd.
Prepared for: Fraser Basin Council
March 2021
COLDWATER RIVER Sensitive Habitat Inventory and Mapping and Aquatic Habitat Index
Prepared For:
FRASER BASIN COUNCIL
Prepared By:
ECOSCAPE ENVIRONMENTAL CONSULTANTS LTD. # 102 - 450 Neave Court Kelowna, BC V1V 2M2
March 2021
Ecoscape File: 18-2715
102 – 450 Neave Ct. Kelowna BC V1V 2M2 Tel: 250.491.7337 Fax: 250.491.7772 www.ecoscapeltd.com 18-2715 March 2021
ACKNOWLEDGEMENTS
This project would not have been realized without the assistance and contribution from the following individuals and organizations:
• Department of Fisheries and Oceans Canada – for their support and expertise in development of the RIM methodology and Aquatic Habitat Index as it was first developed for the Lower Shuswap River project and adapted to subsequent projects including the Coldwater River.
Support for this project was provided by: Nicola Watershed Stewardship and Fisheries Authority (NWSFA) Nicola Tribal Association (NTA) Nicola Valley Institute of Technology (NVIT)
Field Inventory Crew: Scott McGill, Ecoscape Environmental Consultants Ltd Kyle Hawes, Ecoscape Environmental Consultants Ltd Josh Castanier, Ecoscape Environmental Consultants Ltd Jerome Abbot, Nicola Valley Institute of Technology
The following parties contributed to the development of the Aquatic Habitat Index: Kyle Hawes, Ecoscape Environmental Consultants Ltd Jason Schleppe, Ecoscape Environmental Consultants Ltd Bob Harding, Fisheries and Oceans Canada Bruce Runciman, Fisheries and Oceans Canada
The principal author of this report was: Scott McGill, B.Sc., R.P.Bio. Ecoscape Environmental Consultants Ltd
Contributing author and supervisor was: Kyle Hawes, B.Sc. R.P.Bio, Ecoscape Environmental Consultants Ltd
Geographical Information Systems (GIS) mapping and analysis was prepared by: Robert Wagner, Ecoscape Environmental Consultants Ltd Luke Crevier, Ecoscape Environmental Consultants Ltd
Recommended Citation: McGill, S., R. Wagner, L. Crevier, and K. Hawes. 2021. Coldwater River Inventory, Mapping, and Aquatic Habitat Index. Ecoscape Environmental Consultants Ltd. Project File: 18-2715. 47pp + maps & appendices.
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INFORMATION DISCLAIMER
The results contained in this report are based upon data collected during a single season inventory. Biological systems respond differently both in space and time. For this reason, the assumptions contained within are based upon field results, previously published material on the subject, and airphoto interpretation. The material in this report attempts to account for some of the variability between years and in space by using safe assumptions and a conservative approach. Data in this assessment was not analyzed statistically and no inferences about statistical significance are made if the word significant is used. Use of or reliance upon biological conclusions made in this report is the responsibility of the party using the information. Neither Ecoscape Environmental Consultants Ltd., nor the authors of this report is liable for accidental mistakes, omissions, or errors made in preparation of this report because best attempts were made to verify the accuracy and completeness of data collected, analyzed, and presented.
This is intended as a “Living Document”. In so being, it may be continually edited and updated and may evolve and be expanded as needed, and serve a different purpose over time.
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EXECUTIVE SUMMARY
A comprehensive inventory was completed for the Coldwater River (CWR) in July of 2020 from the headwater at the west end of Upper Coldwater Road to the Nicola River confluence in the City of Merritt. The results of this data were used to complete an Aquatic Habitat Index (AHI). This Large River Inventory and Mapping approach (RIM) adapts the data collection methods and standards of Sensitive Habitat Inventory and Mapping (SHIM) (Mason and Knight, 2001) and Foreshore Inventory and Mapping. The resultant AHI uses many different criteria, such as biophysical, fisheries values, and anthropogenic characteristics to estimate the relative habitat value of river reaches and bank segments that were defined during the inventory. The habitat index classifies this information in a 5-class system from Very High to Very Low. The CWR is a 5th order stream that flows a distance of approximately 95 km from its headwaters located within the Coquilhalla Pass at elevations over 1200m, meandering along British Columbia Highway 5 until its eventual confluence with the Nicola River at the west end of the City of Merritt. The watershed is snow dominated with summer low flows occurring in late August through to September, and late winter (Turcotte and Shrimpton, 2020). In total, the CWR supports populations of three of the seven species of pacific salmon; Coho (O. kisutch), Steelhead (O. mykiss) and Chinook (O. tshawytscha), as well as the non-anadromous forms (freshwater only) Rainbow Trout (O. mykiss). Other salmonid fish species include the Rocky Mountain Whitefish (Prosopium williamsoni) and Bull Trout (Salvelinus confluentus). Non-salmonid fish include suckers (Catastomus spp.), sculpin (Cottidae spp.), Redside Shiner (Richardsonius balteatus), Longnose Dace (Rhinichthys cataractae), Leopard Dace (Rhinichthys falcatus), and Pacific Lamprey (Entosphenus tridentatus). The CWR was divided into 25 reaches based on river channel morphology and character. The left bank (facing downstream) was divided into 156 segments and the right bank was broken into 174 Segments. The total length of the left and right river-banks was 93.1 km and 92.4 km, respectively. The predominant shore type along the right and left bank are high flood bench communities. Low and middle bench active floodplain site associations, combined, account for about 36% of the left bank and about 41% of the right bank. Both the left and right banks of the river are predominantly natural or have not been recently disturbed. While natural areas dominate the banks of the Coldwater River, medium to high-level impacts account for about 30% and 32% of the left and right banks respectively. Commercial and industrial land use encroachment/confinement and disturbance was observed primarily in Merritt and occurs along about 1.0% on both the left and right banks of the River. Agricultural land use occurs along 3.7% of the left bank and about 3.7% of the right bank. Rural land use occurs along about 11.2% of the left bank, and 23% of the right bank. Infrastructure accounts for about 3.2% and 4.4 % of the left and right banks respectively, which is largely a result of the 24 bridges recorded along the River. Physical habitat in the CWR was found very suitable for Chinook, Steelhead, and Coho production and the River has hosted significant historical spawning populations of Coho. Rearing areas include low flood benches, backwaters, side channels and sloughs adjacent to spawning areas. In the CWR, mapped backwaters amounted to about 0.87 ha, while side channels and seasonally inundated low flood benches accounted for about 14.64 ha and 38.72 ha respectively.
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The Coldwater River was largely assessed as having a High Aquatic Habitat Index rating. High and Very High rated reaches were not separated since important habitat features and attributes occur over all segments. At the same time, there were no segment that received Low AHI scores. The centerline AHI analysis resulted in about 70% of the river ranked as High and the balance rated as Moderate. River bank segments scoring High and Very High accounted for 54% and 55% of the left and right bank respectively. Only 4 water withdrawals were recorded within the CWR channel. Shallow groundwater wells situated along the river, yet beyond the channel (i.e., in field and rural/agricultural lands throughout expansive mid and high flood benches along the CWR) were not mapped during the field survey. Water withdrawals can directly impact fish as fry can become trapped and lost in withdrawal canals. Initiative should be taken to ensure water withdrawals are properly screened to prevent small-bodied fish and fry entrainment. In addition to direct effects on fish, extensive water withdrawals (from both instream and shallow groundwater wells on the floodplain) can exacerbate the risks associated with low river flows triggered by climate variability. Low summer flows have the potential to diminish the availability of suitable spawning habitat for a variety of fish species as waters recede through low floodplains and riverine marshes. Low flows have the added risk of stranding, trapping rearing juveniles in high quality backwater habitats, where survival depends on the availability of food, cover, and cool waters. Furthermore, low summer flows further elevate the risk to fish associated with elevated stream temperatures and increased stress on fish, which can lead to lethal consequences. Fish species such as Coho may be forced to use lower reaches as low flows result in inaccessibility to formerly used higher reaches. For these reasons it is paramount that landuse planning and management of the CWR focus on conservation and restoration of floodplain and riparian ecosystems as well as improved water management and conservation. In addition, opportunities should be explored to increase the relative abundance of off channel and back water habitats and protect cold water refuge habitats for improved salmon rearing/nursery potential.
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TABLE OF CONTENTS
ACKNOWLEDGEMENTS ...... I EXECUTIVE SUMMARY ...... III TABLE OF CONTENTS ...... V 1.0 INTRODUCTION ...... 1 1.1 Project Background ...... 1 2.0 RIVER INVENTORY MAPPING ...... 2 2.1 Pre-Field / Start-up ...... 3 2.2 RIM Adapted SHIM/FIM for Large River Systems ...... 3 2.2.1 Centerline Survey ...... 4 2.2.2 Left and Right Bank Mapping (adapted SHIM-FIM) ...... 5 2.2.3 Feature Mapping ...... 6 2.3 Instream Morphology and Habitat Feature Polygonization ...... 7 2.4 Riparian Polygonization ...... 7 2.5 Data Processing and Quality Assurance and Control ...... 10 2.6 Photo Log ...... 11 3.0 COLDWATER RIVER KEY FISH SPECIES ...... 11 3.1 Bull Trout ...... 11 3.2 Chinook Salmon ...... 12 3.3 Coho Salmon ...... 13 3.4 Rainbow Trout ...... 15 3.5 Steelhead ...... 17 4.0 AQUATIC HABITAT INDEX ...... 18 4.1 Instream Polygon Scoring Matrix ...... 19 4.2 Riparian Polygon Scoring Matrix ...... 20 4.3 AHI Logic, Calibration, and Ranking ...... 23 4.3.1 Centerline – Instream Zone AHI Logic ...... 24 4.3.2 River Bank – Riparian Band AHI Logic ...... 25 5.0 INVENTORY SUMMARY OF RESULTS ...... 25 5.1 Stream Primary Character ...... 26 5.1.1 Shore Type Relative Distribution ...... 26 5.1.2 Land Use Relative Distribution...... 28 5.1.3 Riverbank Level of Impact ...... 30 5.2 Stream Channel and Hydraulic Character ...... 31 5.3 Fish Habitat ...... 31 5.4 Modifications ...... 33 5.5 Bank Stability and Erosion ...... 35 5.6 Coldwater River Condition Score ...... 36 6.0 AQUATIC HABITAT INDEX RESULTS ...... 37 6.1 The River ...... 37 6.2 The Banks ...... 38 7.0 DISCUSSION ...... 41 8.0 CLOSURE ...... 44 REFERENCES ...... 45
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LIST OF TABLES
Table 1. Overview of river centerline data fields collected using the Trimble data dictionary...... 4 Table 2. Level of Impact rating criteria for Coldwater River Inventory and Mapping...... 5 Table 3. Overview of data collected for right and left bank segments during the field inventory...... 6 Table 4. Overview of watercourse and habitat attributes that were collected using the Data Dictionary developed for this project (Adapted from Module 3, Mason and Knight, 2001). The complete data dictionary can be found in Appendix D...... 6 Table 5. Hydraulic and instream habitat feature classes assigned to Coldwater River and associated low flood and wetland polygons ...... 7 Table 6. Broad vegetation communities (Habitat Types) used for classification of stratified polygons occurring along the Coldwater River (100-m band) from Headwaters to the Nicola River (adapted from Mackenzie and Moran (2004) and Lloyd et al. (1990)...... 8 Table 7. Site qualifiers assigned to each polygon (Table 6) to reflect the estimated level of disturbance and habitat quality and condition...... 10 Table 8. Fisheries relative habitat values (RHV) and weighted scores for aquatic and riparian habitat features...... 19 Table 9. Relative value and weighted scores for mapped instream substrate composition...... 20 Table 10. Ecological category: riparian habitat unit rating matrix (relative habitat value)...... 20 Table 11. The parameters and logic for the Centerline of the Coldwater River ...... 24 Table 12. The parameters and logic for the banks of the Coldwater River ...... 25 Table 13. Mapped aerial coverage and linear extents of fish habitat in the Coldwater River...... 32 Table 15. Summary of riverbank integrity and erosion along the Coldwater River...... 35 Table 16. Summary of prominent left bank and right bank erosion by segment...... 36 Table 17. Level of impact rating / condition score for the Coldwater River...... 36 Table 18. Relative AHI rank distribution (by length) of the Coldwater River...... 37 Table 19. Relative AHI rank distribution (by length) of the left and right banks (looking downstream) of the Coldwater River...... 38
LIST OF FIGURES
Figure 1. Relative weighting of life history and habitat attributes for instream AHI scores...... 20 Figure 2. Relative distribution of shore types along the left and right bank of the Coldwater River...... 26 Figure 3. Relative land use distribution of along the left and right bank of the Coldwater River. The total length of the left (LB) and right riverbanks (RB) was 93.1 km and 92.4 km respectively...... 28 Figure 4. Level of impact category distribution on the left and right bank of the Coldwater River...... 30 Figure 5. Coldwater River hydraulic class distribution over the 94.9 km river centreline length...... 31 Figure 6. Relative distribution of key habitat elements mapped during the Coldwater River inventory. Percentage values shown in the illustration represent the estimated spatial coverage of respective features over the total instream area (~hectares)...... 32 Figure 7. Centerline/reach AHI scores and AHI Rank values (Low/Moderate/High/Very High ...... 37 Figure 8. Left bank segment AHI scores...... 39 Figure 9. Right bank segment AHI scores...... 40
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MAPS
Map Set 1 ...... Riparian Habitat, Hydraulic, and Instream feature classification Map Set 2 ...... Inventoried Fish, Wildlife, and Habitat Attributes and Aquatic Habitat Index
APPENDICES
APPENDIX A...... Coldwater River Reach Data (centerline survey) with AHI Scores APPENDIX B...... Riverbank (Left and Right) Segment Data Base with AHI Scores APPENDIX C...... Centerline and Bank Aquatic Habitat Index Analysis Tables APPENDIX D...... Data Dictionary for Large River System Inventory and Mapping
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1.0 INTRODUCTION
In 2020 Ecoscape Environmental Consultants Ltd. (Ecoscape) was contracted by the Fraser Basin Council (FBC) to complete a comprehensive inventory of the Coldwater River (CWR) between the headwaters located within the Coquihalla Pass and the confluence with the Nicola River and to subsequently develop an Aquatic Habitat Index (AHI). The following technical report outlines the project approach and presents and analyzes the results of both the Inventory and AHI phases of the project. In addition, spatial mapping of the Nicola River was updated from 2016 Inventory data (Ecoscape 2017) to reflect physical changes in the river channel that were influenced by the spring 2017 floods. This additional scope assessed 27.8 km of the Nicola River for reaches 10- 16 between the Coldwater River and Nooaitch Creek confluences. This report is intended as a “Living Document”. In so being, it may be continually edited and updated and may evolve and be expanded as needed, and serve a different purpose over time. Sensitive Habitat Inventory and Mapping (SHIM) and Foreshore Inventory and Mapping (FIM) are protocols used to collect baseline information regarding the current condition of watercourses (SHIM), shorelines (FIM), and associated riparian habitats. These inventories provide information on channel character, shore/bank types and condition, substrates, land use, and habitat modifications. This information is combined where possible, with other mapping resources such as previous fisheries inventories, recent orthophotos, and other information. A protocol was developed specifically for the Shuswap River to map large river habitat and character. This protocol, referred to as River Inventory and Mapping (RIM) was used in the current project to map the CWR. An Aquatic Habitat Index (AHI) is generated using the processed field data to determine the relative habitat value of the aquatic habitats and shoreline areas. The Aquatic Habitat Index uses many different criteria, such as biophysical, fisheries values, and anthropogenic characteristics to estimate the habitat value of a shoreline segment. The Habitat Index classifies this information in a 5-Class system from Very High to Very Low.
1.1 Project Background
As resource development and human populations increase in British Columbia, pressures for all resources and services have accelerated. Rapid growth has often overwhelmed the ability of local planners to manage land and preserve sensitive habitats (Mason and Knight, 2001). This has resulted in the loss or degradation of aquatic and riparian habitats that are critical for fish and a diverse wildlife assemblage. More specifically, rapid population growth and development around our large interior lakes and rivers is one of many factors that is impacting our fish and wildlife resources. This tremendous growth rate has resulted in commercial and residential developments around these large lakes and rivers. This rapid increase in population and development presents a significant challenge to plan and/or manage future growth around our large interior lakes and rivers. Accordingly, there is an urgent need to develop stronger tools and better methods to conserve, protect and reclaim these habitats.
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SHIM and FIM are recognized standards for fish and aquatic habitat mapping in urban and rural watersheds in British Columbia. These protocols attempt to ensure the collection and mapping of reliable, high quality, current, and spatially accurate information about local freshwater habitats, watercourses, and associated riparian communities. These protocols are designed as land-planning, computer-generated, interactive GIS tools that identify sensitive aquatic and terrestrial habitats. They are intended to provide community, stewardship groups, individuals, regional districts and municipalities with an effective, low-cost delivery system for information on these local habitats and associated current land uses. SHIM and FIM have numerous applications and can: • Provide current information not previously available to urban planners, to allow more informed planning decisions and provide inventory information for integration into Official Community Plans. In addition, this information can be used to educate the public as to the natural resource values of these systems and the impacts our activities have on them; • Provide a catalogue of the current condition of the foreshore to aid with permit and compliance monitoring; • Assist in the design of stormwater/runoff management plans; • Monitor for changes in habitat resulting from known disturbance; • Identify and map potential point sources of pollution; • Help guide management decisions and priorities with respect to habitat restoration and enhancement projects; • Assist in determining setbacks and fish/wildlife-sensitive zones; • Identify sensitive habitats for fish and wildlife along watercourses; • Provide a means of highlighting areas that may have problems with channel stability or water quality that require more detailed study; • Provide a baseline inventory of existing shoreline developments/modifications such as bank armouring and retaining walls, groynes, riparian disturbance, and other anthropogenic features; • Provide baseline mapping data for future monitoring activities and development of a shoreline management plan; and • Map and identify the extent of riparian vegetation available and used by wildlife and fish. 2.0 RIVER INVENTORY MAPPING
Biophysical surveys of the CWR used the RIM methodology which adapted the data collection methods and standards of Sensitive Habitat Inventory and Mapping (SHIM) (Mason and Knight, 2001) and Foreshore Inventory and Mapping (FIM). Data was
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recorded using a Trimble Geo7x/Data Logger and entered into a digital data dictionary. Data collection fields for respective biophysical and anthropogenic attributes are listed in the following sub sections. Data collection methods and processing standards can be reviewed in full at: http://cmnmaps.ca/cmn/files/methods/SHIM_Methods.html
Entering data into the Trimble Geo 7x (Left) using the data dictionary developed specifically for RIM (Appendix D). Marking up large format field maps for subsequent incorporation into GIS mapping and integration into the final data deliverables (Right).
2.1 Pre-Field / Start-up
Ecoscape reviewed all pertinent background information useful to the project and incorporated this data, where relevant, into respective watercourse features and their attributes. Ecoscape obtained aerial imagery for the Coldwater system from the British Columbia Imagery Web Map Services. Post flood imagery of the Nicola River (for reaches 10-16 totaling 27.8 km, between the Coldwater River and Nooaitch Creek) was provided by Fraser Basin Council. Preliminary reach breaks (segments) were identified and right and left bank shoreline segments were determined. In addition, adjacent natural features of interest were identified (i.e., tributaries, side channels, islands, wetlands etc.) that otherwise may not be picked up during standard centerline surveys. Large format field maps were then produced, on which field staff transcribed various field data.
2.2 RIM Adapted SHIM/FIM for Large River Systems
The RIM data collection, data processing, and data deliverables were based on the mapping standards for SHIM (Mason and Knight, 2001), with consideration that the CWR is a middle-sized river. The Data Dictionary (Version 6) is provided in Appendix D. This digital data collection format adapts both SHIM and FIM dictionaries into a common field data collection file, tailored to a spatial biophysical inventory on a mid to large size river system like the CWR. The intent of this approach is to utilize a specific mapping protocol that can be used for mid to large sized river systems in British Columbia.
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The upper 12 km of the CWR, from the headwaters downstream to the Upper Coldwater Road Bridge, was not field-surveyed. Bank and instream character and attributes were inferred from aerial imagery and visual inspections were performed where the road approached the river.
2.2.1 Centerline Survey
The centerline of the river channel was mapped along the center of the bankfull (not floodplain) width. While both banks and instream features were digitized using air photo interpretation. Comprehensive data for both the left and right river banks were collected independently of the stream centerline as unique “Right Bank” and “Left Bank” line features (reviewed below in Section 2.2.2). The river was stratified into a series of successive reaches, each possessing and being characterized by different attributes or biophysical characteristics (i.e., hydraulic class, channel characteristics, substrate composition, and riparian class etc.) (Table 1).
Table 1. Overview of river centerline data fields collected using the Trimble data dictionary. Reach Length Linear measure along centerline of channel (m) Primary Character Modified; Natural; Other Channel width Bankfull level (m) Gradient % grade Salmonid Spawning Yes/No/Potential; Species Livestock Access Yes/No; Comment Hydraulic Character Cascade; Cascade-Pool; Falls; Pool; Run; Glide; Riffle; Riffle-Pool; Riffle- Run; Slough; Lake; Wetland; Other Channel Pattern Straight; Sinuous; Irregular; Irregular meandering; Regular meanders; Tortuous meanders Bars Side; Diagonal; Mid-channel; Spanning; Braided Islands Occasional; Split; Frequent – Irregular; Frequent – Regular; Anastomosing Substrate Composition % Organic; % Fines; % Gravel; % Cobble; % Boulder; % Bedrock Embeddedness/Compaction Degree of embeddedness of coarse substrates in fines (sand/silt) % Instream Cover Boulder; Deep Pool; Instream Vegetation; Large Woody Debris; Overstream Vegetation Reach Impact Rating See Table 2.
A Level of Impact rating was included in the data dictionary and applied to the centerline reach information (Appendix D). This rating system was designed with the intent of providing a more measurable parameter in evaluating river condition and monitoring and evaluating habitat changes on local watercourses and associated riparian and floodplain communities. Individual reach scores were assigned based on the criteria outlined in Table 2. Weighted scores for respective impact ratings were obtained by dividing the cumulative length of reaches receiving the same impact rating by the total river length being evaluated to obtain a relative value (% of river length). This value was then multiplied by the respective Score (0-6) equaling the weighted score. The sum of weighted scores was then divided by the maximum attainable score (6)1 and
1 A combined weighted score of 6 would be attained if all reaches were natural with no discernable human disturbance on either the right or left bank. In other words, the river is pristine. #102 – 450 Neave Ct. Kelowna, BC V1V 2M2 tel: 250.491.7337 fax: 250.491.7772 web: www.ecoscapeltd.com 18-2715 5 March 2021
transformed into a percentage value or river grade. This scoring system precedes the Aquatic Habitat Index and, on its own, is a field measure of river/bank condition.
Table 2. Level of Impact rating criteria for Coldwater River Inventory and Mapping. River Bank Impact Criteria1 Combined River Reach Score Nil-Nil (Nil impacts on both banks) 6 Nil-Low 5 Nil-Mod 4 Nil-High 3 Low-Low 4 Low-Mod 3 Low-High 2 Mod-Mod 2 Mod-High 1 High-High (Impact on both banks is high) 0 1. Numeric Bank Impact Scores: Nil=3; Low=2; Mod=1; High=0
2.2.2 Left and Right Bank Mapping (adapted SHIM-FIM)
Conventional SHIM methods describe the right and left bank character and condition within a single stream centerline feature for respective reaches. To better map and evaluate the larger scale represented in the CWR, the SHIM approach was modified (Appendix D), which adapts the FIM field attributes into the data dictionary. Through this approach, left and right bank lines were logged in the field independently of one another (similar to FIM shoreline mapping) and data fields were populated separate from the Centerline. Individual segments were determined as relatively homogenous sections of shoreline based on vegetation structure, physical character, and general land use. Shoreline sections that displayed a consistent pattern or distribution of different biophysical units/features interspersed with anthropogenic units (e.g., clearings and fields) were also considered as a single segment. An example of this would be through rural areas; where remnant natural pockets along the riverbank are interspersed with rural residences and small agricultural clearings. Shoreline segments were determined and assigned independently of river reaches. However, the adjacent river reach was identified in the data for each shoreline segment (e.g., Left Bank Segment 25, River Reach 11). Large format laminated posters of the River were marked-up to illustrate river and riparian features, attribute lines (e.g., bank armouring) and points (e.g., water withdrawals). These features were then digitized in the office to supplement GPS field data. Table 3 summarizes the data fields that were collected for each bank segment.
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Table 3. Overview of data collected for right and left bank segments during the field inventory.
Segment Number Reach Number Segment Length Representative Photo Category Menu/Data Fields Primary Shore Type Cliff/Bluff; Rocky Shore; Gravel; Sand; Confluence (alluvial fan); Wetland; Other; Flood Low Bench; Flood Mid Bench; Flood High Bench Shore Modifier Log Yard; Marina small (6-20); Marina large (20+); Railway; Road; None; Other Slope Bench; Low (0-5%); Moderate (5-20%); Steep (20-60%); Very Steep (60%+) Land Use (Observed) Agriculture; Commercial; Conservation; Forestry; Industrial; Institution; Multi Family; Natural Area; Park; Recreation; Rural; Single Family; Urban Park Level of Impact None; Low (<10%); Medium (10-40%); High (>40%) Livestock Access Yes/No Relative Condition %Disturbed; %Natural % Shore Type Distribution %Cliff/Bluff; % Rocky; % Gravel; % Sand; % Confluence; % Wetland; % Other; % Flood Low Bench; % Flood Mid Bench; % Flood High Bench % Landuse Distribution Agriculture; Commercial; Conservation; Forestry; Industrial; Institution; Multi Family; Natural Area; Park; Recreation; Rural; Single Family; Urban Park Modifications % of segment retained/armored by walls and rip rap; % of segment with railway influence; % of segment with a road influence Bank Stability High; Medium; Low; Eroding and % Eroding Bank Material Clay; Silt; Sand; Gravel; Cobble; Boulder; Bedrock Comments Provided with various categories listed above
2.2.3 Feature Mapping
Morphological, habitat, and anthropogenic features were marked with both the GPS and described on field maps and later digitized as points and polygons into the modified CWR data dictionary. These features, summarized in Table 4, provide a more quantitative measure of relative disturbance/modification, and aquatic habitat quality/complexity (e.g., aerial abundance of spawning substrates/coarse woody debris measure etc.).
Table 4. Overview of watercourse and habitat attributes that were collected using the Data Dictionary developed for this project (Adapted from Module 3, Mason and Knight, 2001). The complete data dictionary can be found in Appendix D. Main Attribute Detailed Feature Collected Modifications Type (retaining wall/water withdrawal/bridge/dock etc.) material; length; photo Culvert Attributes Type-Material; Condition; Barrier; Size; Baffles Obstruction Attributes Type-Material; Barrier; Size; Photo Stream Discharge Attributes Point of Discharge; Type-material; Size Erosion Feature Type of Erosion; severity; exposure; material Fish Habitat Attributes Type of Habitat (Spawning/rearing/cover); Size; Slope; Photo Enhancement Areas Type of Enhancement; Potential or existing enhancement Wildlife Observations Type of Observation; Wildlife species; Photo Wildlife Tree Attributes Type of Tree; Size; Location Near Waterbody Attributes Type of Waterbody (spring/side channel/pond etc.); Size Wetland Attributes (Polygon feature) Wetland Type-Class; Photo Representative Photograph Location Location; Direction
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2.3 Instream Morphology and Habitat Feature Polygonization
The spatial extents of side channels, backwaters, and associated riverine wetlands and floodplain communities were identified and mapped. Relative habitat scores were applied to each type to be used in analysis and habitat index calculations (Section 4.1). The river channel, extending to the outer limits of the mean annual high water level (to include low bench floodplain areas) was estimated using field inventory data and air photo interpretation. The spatial extents of the channel formed the basis for subsequent stratification of habitat units within (Map Series 1). Habitat units were classified based on complex hydraulic and instream habitat feature classes as one of the following in Table 5.
Table 5. Hydraulic and instream habitat feature classes assigned to Coldwater River and associated low flood and wetland polygons BW Backwater RN Run CO Confluence P Pool G Glide RF Riffle GB Gravel/Sandbar WN Wetland
2.4 Riparian Polygonization
The CWR flows through 8 biogeoclimatic zones from its headwaters in the Coquihalla summit down to the Nicola River. These include: ESSF mw1 – Cascade Moist Warm Engelmann Spruce - Subalpine Fir CWH ms1 – Southern Moist Submaritime Coastal Western Hemlock MS mw1 – Cascade Moist Warm Montane Spruce MS dm2 – Cascade Dry Mild Montane Spruce IDF dk2 – Cascade Dry Cool Interior Douglas-fir IDF xh1 – Okanagan Very Dry Hot Interior Douglas-fir PP xh2 – Thompson Very Dry Hot Ponderosa Pine BG xw1 – Nicola Very Dry Warm Bunchgrass Broad vegetation communities/habitat types were stratified within a 100-m band along the right and left riverbanks (Map Series 1). Polygons were classified according to Table 6. In addition, site qualifiers (Table 7) were assigned to each polygon to reflect the estimated level of disturbance and habitat quality and condition. The river channel boundary was established at the estimated mean annual floodplain level to include riparian marshes and low bench floodplain sites. Thus, mid bench floodplain ecosystems (i.e., black cottonwood ecosystems) were included in the 100 m riparian band and not factored into the stream channel analysis (Section 4.2).
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Table 6. Broad vegetation communities (Habitat Types) used for classification of stratified polygons occurring along the Coldwater River (100-m band) from Headwaters to the Nicola River (adapted from Mackenzie and Moran (2004) and Lloyd et al. (1990).
BGC Zone/ Map Variant/ Site Code Description Phase Series Association Site Series Name Comment B Broadleaf Forest BGxw1 08 AS At - Snowberry - Kentucky bluegrass Upland broadleaf forest ecosystem above the active floodplain predominated by trembling aspen or IDFxh1 98 birch C Coniferous Forest CWHms1 06 AD BaCw - Devil's club Upland coniferous forest ecosystems above the active floodplain. Including high bench sites along CWHms1 04 AO BaCw - Oak fern the Coldwater River. ESSFmw 06 FV Bl - Gooseberry - Valerian ESSFmw 04 FH Bl - Huckleberry - Falsebox ESSFmw 05 FA BlBa - Azalea - Pipecleaner moss ESSFmw 07 FO BlBa - Oak fern - Lady fern ESSFmw 01 FR BlBa - Rhododendron ESSFmw 02 LJ BlPl - Juniper - Rhacomitrium IDFdk2 07 RT CwSxw - Twinberry - Soft-leaved sedge IDFdk2 04 DF Fd - Feathermoss ESSFmw 03 DF FdBl - Falsebox - Pinegrass CWHms1 03 DF FdHw - Falsebox CWHms1 02 DK FdPl - Kinnikinnick IDFdk2 01 LP FdPl - Pinegrass - Feathermoss IDFxh1 07 DS FdPy - Snowberry - Spirea IDFxh1 04 SP FdPy - Snowbrush - Pinegrass CWHms1 05 HQ HwBa - Queen's cup CWHms1 01 AM HwBa - Step moss MSdm2 04 LG Pl - Grouseberry - Pinegrass MSdm2 03 LJ Pl - Juniper - Grouseberry CWHms1 07 SS Ss - Salmonberry MSdm2 01 SF Sxw - Falsebox - Feathermoss MSdm2 06 SD Sxw - Gooseberry - Devil's club MSdm2 05 SG Sxw - Gooseberry - Grouseberry IDFdk2 06 SH Sxw - Horsetail MSdm2 07 SH Sxw - Horsetail - Leafy moss IDFdk2 05 SD SxwFd - Dogwood - Gooseberry IDFxh1 08 SD SxwFd - Douglas maple - Dogwood CF Cultivated Field Cultivated fields (i.e., hayfields, row crops, orchards) CW Open Coniferous IDFxh1 02 PB FdPy - Bluebunch wheatgrass - Balsamroot Open ponderosa pine/Interior Douglas-fir woodlands with grassland dominated understory Woodland IDFdk2 02 DW FdPy - Bluebunch wheatgrass - Pinegrass IDFxh1 03 DW FdPy - Bluebunch wheatgrass - Pinegrass PPxh2 02 DS FdPy - Bluebunch wheatgrass - Selaginella IDFdk2 03 DP FdPy - Pinegrass IDFxh1 01 DP IDFxh1 05 PF FdPy - Pinegrass - Idaho fescue PPxh2 06 SS FdPy - Snowberry - Saskatoon IDFxh1 06 DF FdPy - Spirea - Feathermoss PPxh2 04 PS Py - Big sage - Bluebunch wheatgrass BGxw1 03 PW Py - Bluebunch wheatgrass PPxh2 03 PW
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PPxh2 01 PF Py - Bluebunch wheatgrass - Fescue BGxw1 05 PF Py - Rough fescue - Bluebunch wheatgrass FL Low Flood Bench Wm01;RG Water Sedge - Beaked sedge; Reed Canary Grass Low bench ecosystems occur on sites that are flooded for moderate periods (< 40 days) of the (G=graminoid; Fl06 Sandbar willow; willow sp. growing season, conditions that limit the canopy to tall shrubs, especially willows and alders. Annual S=Shrub) erosion and deposition of sediment generally limit understory and humus development. FM Mid Flood Bench CD/Fm01 Cottonwood – snowberry – Rose - Dogwood Middle bench ecosystems occur on sites briefly flooded (10–25 days) during freshet, allowing tree CWHms1 08 CD Act - Red-osier dogwood growth but limiting tree species to only flood-tolerant broadleaf species such as black cottonwood. CWHms1 09 CW Act - Willow PPxh2 07 CW Act - Water birch SF Seasonally Flooded Woodlands and croplands that are intermittently flooded in periods of high flows; found throughout the Coldwater Valley in agricultural crop fields adjacent to the Coldwater River. GB Gravel/Sand Bar GN Grassland BGxw1 01 WJ Bluebunch wheatgrass - Junegrass Natural grassland ecosystems generally not containing shrub or tree strata BGxw1 02 WS Bluebunch wheatgrass - Selaginella BGxw1 06 FW Fescue - Bluebunch wheatgrass(Rough fescue) BGxw1 07 GR Giant wildrye IDFxh1 91 FW Idaho fescue - Bluebunch wheatgrass IDFxh1 93 WB Bluebunch wheatgrass - Balsamroot IDFxh1 96 BC Kentucky bluegrass - Stiff needlegrass IDFxh1 97 RF Prairie rose - Idaho fescue MSdm2 02 JW Juniper - Bluebunch wheatgrass M Mixed Forest Upland mixed stand seral forest. High bench site along the Coldwater River. Tree canopy mix of trembling aspen, birch, cottonwood, lodgepole pine, interior Douglas-fir, and spruce. RL Railway Railway and associated fillslopes, armouring and other modifiers RI River Tributaries RZ Road Surface Road Surface RU Rural Rural areas containing houses, outbuildings, driveways, and landscaping. A native tree canopy may be present but it is perforated by development and the understory plant associations have been partly removed. In higher disturbed sites the tree canopy is very limited to absence and natural plant associations sparse to absent. SB Silt Bluff/ Exposed Steep, sparsely vegetated silt bank. Bank SH Shrub Persistently disturbed shrub sites that are not included within low flood bench. SS Shrub-steppe BGxw1 04 SW Big sage - Bluebunch wheatgrass Natural grassland ecosystems generally not containing shrub or tree strata IDFxh1 92 WA Big sage - Bluebunch wheatgrass - Balsamroot IDFxh1 94 SF Big sage - Bluebunch wheatgrass - Idaho fescue IDFxh1 95 SK Big sage - Kentucky bluegrass PPxh2 05 SF Big sage - Bluebunch wheatgrass (- Fescue) UR Urban Urban areas containing higher population densities in single and high density housing, in addition to extensive infrastructure build-up. The native tree canopy is very limited to absence and natural plant associations sparse to absent. WN Wetland/Swamp IDFdk2 / 08/09 WS Willow - Sedge A marsh is a shallowly flooded mineral wetland dominated by emergent grass-like vegetation. A IDFxh1 fluctuating water table is typical, with early-season high water tables dropping through the growing Wetland/Marsh IDFxh1 00 CT Cattail Marsh season. Exposure of the substrate in late season or during dry years is common.
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Table 7. Site qualifiers assigned to each polygon (Table 6) to reflect the estimated level of disturbance and habitat quality and condition. d Ditch hd Highly disturbed, fragmented/broken canopy. Analogous to a partly treed rural site. Highly disturbed wetland and fragmented by land use and agricultural practices. The ecological function of this feature is severely impaired by human and associated activities. md Moderately disturbed treed riparian area. The habitat community structure may be fragmented or perforated by some land clearing and rural disturbances. ld Low disturbance, not recently disturbed. Containing natural tree canopy and understory vegetation associations. f Narrow riparian fringe generally less than 5-m wide but occasionally up to 10-m. n Natural, undisturbed site pa Urban Park/Recreational Area
2.5 Data Processing and Quality Assurance and Control
The Resource Inventory Committee and SHIM Methodology (Mason and Knight, 2001) provide specific requirements for quality assurance and quality control. These standards, such as GPS settings/precision, logging intervals, and data management and deliverables were followed throughout the field inventory stages of the project. GPS settings and use were in accordance with Resource Inventory Committee Standards to ensure the collection of spatially accurate data. The coordinate system used was UTM Zone 10 North, North American Datum 83. Field data was differentially corrected using base data provided by UNAVCO, Bellingham, WA, situated at 48°51'22.29941"N 122°29'36.02368"W, and SOPAC, Williams Lake, Institute of Geophysics and Planetary Physics (IGPP), situated at 52°14'12.72718"N, 122°10'04.11708"W. Data dictionary tools designed for ARC View 3.x were employed to process the data and to export the data into ESRI shapefiles. Subsequent processing and mapping was completed using ArcGIS 10.2/ArcGISPro. Processed GPS data (shapefiles) were then converted into geodatabases. To ensure Quality Assurance and Control the following tasks were followed during completion of this project: • Field data collected was backed onto the local server and field computer at the end of each field day. • All field data collected during the field inventories was post processed by the field inventory biologist, Scott McGill, B.Sc., R.P.Bio. • We reviewed each attribute collected during the field survey as part of a quality control / assurance process. The final database has been provided to the Fraser Basin Council and project partners at the completion of the project. Corrections and adjustments to the database will be made as necessary.
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• We integrated this assessment with additional GIS information provided by other parties.
2.6 Photo Log
SHIM/FIM standards require that a detailed photo log accompany and be incorporated into the database. All photos were entered into a log for location and subject reference. In addition, coordinate locations (UTM Zone 10 North, North American datum 83 Canada) where photos were taken was entered into the GPS to enable spatial referencing on the ground for each photo.
3.0 COLDWATER RIVER KEY FISH SPECIES
The CWR flows a distance of approximately 95 km, starting from its headwaters located within the Coquilhalla Pass at elevations over 1,200 m, meandering along British Columbia Highway 5 until its eventual confluence with the Nicola River at the west end of the City of Merritt. The CWR supports populations of three of the seven species of pacific salmon; Coho (O. kisutch), Steelhead (O. mykiss) and Chinook (O. tshawytscha), as well as the non- anadromous forms (freshwater only) Rainbow Trout (O. mykiss). Other salmonid fish species include the Rocky Mountain Whitefish (Prosopium williamsoni) and Bull Trout (Salvelinus confluentus). Non-salmonid fish include suckers (Catastomus spp.), sculpin (Cottidae spp.), Redside Shiner (Richardsonius balteatus), Longnose Dace (Rhinichthys cataractae), Leopard Dace (Rhinichthys falcatus), and Pacific Lamprey (Entosphenus tridentatus). The Thompson River population of Steelhead was designated by COSEWIC2 as Endangered in an emergency assessment conducted on January 10, 2018, re-examined and confirmed in November 2020. The Interior Fraser population of Coho (Oncorhynchus kisutch) was initially assessed by COSEWIC as Endangered in May of 2002 and was later reassessed in 2016 where the status was changed to Threatened. The Lower Thompson, Spring population of Chinook was designated as Endangered by COSEWIC in November 2020. Because of their importance to commercial, recreational and Indigenous fisheries, the following were selected as key species for matrix development (to assign relative habitat scores) in this study: Bull Trout, Chinook Salmon, Coho Salmon, Rainbow Trout, and, Steelhead.
3.1 Bull Trout
LIFE HISTORY Bull Trout have a highly variable life history. There are three life history forms in BC: fluvial, adfluvial, and resident. The fluvial form spends its entire life in flowing water but often makes extensive migrations within large river systems (McPhail 2007).
2 The Committee on the Status of Endangered Wildlife in Canada (COSEWIC)
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REPRODUCTION Timing of spawning migrations depends on a number of factors such as water temperature, habitat, genetic stock and possibly amount of daylight (MWLAP 2004). They spawn between mid-August and late October (MWLAP 2004) with resident populations tending to migrate shorter distances to spawning grounds. Migratory or adfluvial populations can have a much larger home range and migratory Bull Trout may travel up to or over 250 km (MWLAP 2004). The temperature below which Bull Trout begin spawning activity appears to be 9⁰C (MWLAP 2004). Bull Trout spawn in flowing water in habitat similar to other salmonids, often in runs or glides in larger river or in pockets of suitable gravel in smaller streams (McPhail 2007). They show a preference for gravel and cobble sections in smaller, lower order rivers and streams (MWLAP 2004). Size of the redd and size of gravel at the spawning site depends on female size (i.e. larger females spawn in larger gravel). AGE, GROWTH AND MATURITY Bull Trout fry tend to stay near the substrate to avoid being swept downstream (Ford et al. 1995 in MWLAP 2004). Juvenile trout feed on aquatic insects. Adfluvial trout are typically piscivorous and tend to grow larger than fluvial populations (MWLAP 2004). Bull Trout reach maturity most often at 5 to 7 years but the range is 3 to 8 years. Juvenile fish (fly to 3+) move from streams to lakes or reservoirs throughout the summer months (McPhail and Murray 1979 in MWLAP 2004). HABITAT INDEX MATRIX Mature forest capable of producing large woody debris is typically more important to Bull Trout than younger structural stages. These forests typically trap and store more sediment and provide more nutrients and fish habitat structure than younger forests (MWLAP 2004). Bull Trout are dependent upon cover, usually in the form of deep pools, woody debris jams and undercut banks (MWLAP 2004). Factors that are often associated with Bull Trout distribution and abundance include channel and hydraulic stability, substrate, cover, temperature, and the presence of migration corridors (MWLAP 2004). The influence and importance of these factors varies based on life history (resident, adfluvial or anadromous) and life history stage (MWLAP 2004).
3.2 Chinook Salmon
In British Columbia Chinook salmon spawn in over 250 rivers and streams (McPhail 2007). Within the Fraser River system, there are seven genetically recognizable geographic groupings: an upper, middle, and lower Fraser group; a northern, southern and lower Thompson group; and the Birkenhead River population (Beacham et al. in McPhail 2007). Chinook are the largest of seven species of Pacific salmon and have the widest distribution. They have sustained First Nations for thousands of years, provide important recreational and commercial harvesting opportunities, and were an important part of the colonization of British Columbia. Chinook stocks exhibit both ocean type and stream type life history patterns. Ocean type Chinook rear in freshwater for several months and migrate to the ocean in the first fall while stream type Chinook rear in freshwater for one year before migrating to the ocean (Fraser et al. 1982 in DFO 1997).
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REPRODUCTION Chinook return to the lower Fraser by mid-July with peak spawning occurring from late August to November. Chinook females choose the spawning site and appear to prefer sites with subgravel flow (eg. In the tail-outs of pools immediately above riffles or in upwelling sites) (McPhail 2007). Chinook eggs are the largest of the species of Pacific salmon and require higher rates of flow and oxygen than other species. As with most other species of Pacific salmon, adults will die after spawning. AGE, GROWTH AND MATURITY Chinook eggs incubate through the winter period and fry emerge in the early spring. As with the other species discussed, their incubation period varies with water temperatures. Once emerged, the diet of fry includes adult chironomids as well as chironomid larvae and pupae, terrestrial insects taken from the surface, and nymphs of larvae of aquatic insects (McPhail 2007). Upon emergence, Chinook fry are often moved downstream by flows from areas where they incubated (Groot and Margolis 1991). Their habitat range is often keyed to flow velocities rather than habitat types. They range widely in habitat use but generally will occupy boulder areas in faster waters. Downstream timing appears to be correlated strongly with size (Groot and Margolis 1991). They will eventually move out to the Pacific and return 4-5 years later to spawn as adults. Juvenile rearing is not well understood but both natal streams and lakes are utilized. Lakes and larger natal streams provide overwintering freshwater habitat for stream type Chinook, which allows fish to attain significant body mass allowing for subsequent salt water adaptation (DFO 1997). Ocean type Chinook likely realize a greater benefit from the productivity of larger lakes (DFO 1997). HABITAT INDEX MATRIX Chinook adults are heavily dependent on deep pools where they may hold for up to 8 weeks before moving out to spawning grounds. Their spawning areas must have larger diameter clean gravels which will afford adequate percolation of flows and oxygen to meet incubation requirements. They are particularly sensitive to movements of silt or reductions in flow during the incubation period.
3.3 Coho Salmon
LIFE HISTORY Coho Salmon are an important species and range through hundreds of coastal and interior streams in British Columbia. Interior Fraser River Coho Salmon are genetically unique and can be distinguished from Lower Fraser River Coho. Studies of the genetic structure of Interior Fraser Coho indicate that there are five distinct populations. Three are within the Thompson (North Thompson, South Thompson, and Lower Thompson regions) and two are within the Fraser (the area between the Fraser Canyon and the Thompson-Fraser confluence and the Fraser River and tributaries above the Thompson-Fraser confluence) (Interior Fraser Coho Recovery Team 2006). Coho in the province is managed federally by Fisheries and Oceans Canada.
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Coho populations in British Columbia’s Interior face many threats and challenges. So much so that in 2002 the Committee on the Status of Endangered Wildlife in Canada (COSEWIC) listed them as endangered. COSEWIC was concerned that if Interior Fraser Coho distribution became too fragmented, genetic exchange within the populations may be insufficient to ensure long-term survival (COSEWIC 2002). Over the period of record (1975-2003) the 3-year average escapement for Interior Fraser Coho peaked mid-1980 at over 70,000 fish, and declined to a running average of less than 18,000 individuals in the late 1990’s. Similar trends are observed in total abundance (i.e. catch plus escapement), which declined from over 200,000 in the late 1970’s and 1980’s to less than 30,000 in recent years (Interior Fraser Coho Recovery Team. 2006). While natural spawning is responsible for producing most of the Coho Salmon escaping to the Interior Fraser River, Coho stocks in the Lower Thompson System are supplemented by the Spius Creek hatchery, which was installed in 1984 to produce Steelhead smolts (DFO 1998b). Hatchery fish outnumber those produced from fish spawning in natural stream areas (DFO 1998a). Interior Fraser Coho require adequate freshwater and marine habitats to survive and reproduce. These fish spawn in freshwater and the juveniles normally spend one full year in freshwater before migrating to the sea as smolts. The distribution of spawning habitat for Coho Salmon is usually clumped within watersheds, often at the heads of riffles in small streams and in side-channels of larger streams. However, Interior Fraser Coho are commonly observed spawning in mainstems of larger rivers during periods of low flow, presumably when tributary and side-channel habitats are less accessible. The outlook for Interior Fraser Coho is highly uncertain and depends on the magnitude of negative impacts due to fishing, habitat perturbations, and climate related changes in survival. A return to higher survivals, combined with continued low exploitation rates, conservation of existing habitat, and habitat restoration, could produce increases in escapements and subsequently population recovery. However, if survival rates are at low levels, such as those recorded in 1996, spawner numbers will continue to decrease, possibly resulting in the eventual extinction of Interior Fraser Coho. Since there is no predictor of future survival rates, a cautious approach to harvest and habitat management will be required to ensure the long-term viability of Interior Fraser Coho (Interior Fraser Coho Recovery Team. 2006). REPRODUCTION The timing of river entry and spawning varies with latitude and distance from the ocean. Thompson Coho stocks return at age 3 to the lower Fraser between late October and November and spawning occurs from mid-October to December. Spawning Coho are the most secretive of Pacific salmon and most reproduction behavior occurs at night. Coho have similar tendencies to Rainbow Trout in their selection of rearing habitat (Griffith 1986). They prefer sites with sub-gravel flow as is found in tail-outs of pools immediately above riffles or upwelling sites. They prefer smaller tributary and headwater streams often not much more than 1m in width. Eggs incubate over winter
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and hatch in the spring. Incubation timing is dependent on water temperatures as with all other salmonids in the Thompson system. Fry emerge from late March through late May and early June (DFO 1997). Juveniles spend one year in freshwater, rearing initially in their natal streams and subsequently moving downstream to rear and overwinter in rivers and lakes (DFO 1997). Migration likely occurs between mid-April and early May. AGE, GROWTH AND MATURITY In British Columbia, Coho fry usually reach 80-90mm in their first year (Sandercock 1991 in McPhail 2007). Coho fry in interior streams normally spend 1 to 2 years in nursery streams before out-migrating to the Pacific Ocean. They are primarily drift- feeders and take the drifting stages of aquatic insects from the water column or terrestrial insects from the surface. Coho prefer pools and backwater areas. They will aggregate in backwaters, side-channels and quiet embayments along stream margins. They will eventually emigrate to larger rivers and will search out off-channel overwintering areas such as beaver ponds and flooded wetlands (Peterson 1982 in McPhail 1997). In winter they will seek cover under woody debris, undercut banks, cobbles and move deeply into root wads. HABITAT INDEX MATRIX The Habitat Index Matrices indicate that Coho adults require cascade areas, confluence areas, pools, riffles, runs, cover and access to small streams in upper watersheds. They will hide under cut banks and root wads and will search for suitable gravel in upwelling areas and tail-outs of pools. Coho juveniles depend heavily on pools, backwaters, in-stream vegetation areas, low and middle flood benches, marsh areas, side channels, cobble areas and large woody debris. Tributary stream confluences are important as are small, stable streams which provide rearing habitat. These streams will support Coho through their incubation period and their first year of rearing. Adequate year-round flows and cool temperatures afforded by well-developed riparian zones are important. Some fry will move to the main rivers where they will seek back-waters, flood benches and beaver dams. Coho in south central B.C. will usually rear for 1 year in freshwater and then begin their migration to the ocean. They will spend 18 months at sea before returning as adults to spawn. As with other Pacific salmon (except for Steelhead and coastal Cutthroat) they die after spawning.
3.4 Rainbow Trout
LIFE HISTORY Rainbow Trout are an important game fish that reside in the CWR. They are considered the number one target for anglers in the British Columbia interior. It is apparent that there are two forms of trout in the system; a resident population that lives its entire life cycle in the river and adjoining tributaries, and an adfluvial form that spends the majority of its life in large lakes but migrates to rivers and streams to spawn or feed (Ministry of Environment files, Okanagan Region). There are many similarities between
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these two groups as far as spawning requirements, early rearing and adult life forms and accordingly these life forms will be grouped in this discussion. Rainbow Trout in the system, both in lake forms and resident river populations are heavily sought after by anglers and tend to be easily overfished. REPRODUCTION Rainbow Trout are spring spawners and migrations into spawning streams are triggered by rising water temps (above 50C.) and rising water levels (Hartman 1966 in McPhail 2007). The CWR is normally in freshet at this time with high flows and turbid waters. These conditions present a challenge for fisheries managers to monitor their activities and population strengths. A search of the Ministry of Environment Habitat Wizard reveals that Rainbow Trout have been found in the tributary streams of the CWR. These streams are critically important for the nursery phase of Rainbow Trout juvenile rearing. Maturing adults will migrate into these streams during freshet flows (April and May) and will spawn on the receding flows following. Unlike Pacific salmon, Rainbow Trout adults can survive spawning and it has been determined that about 10% will live on to spawn a second time (McPhail 2007). Rainbow Trout juveniles rearing in small streams tend to be highly connected with riffles, runs and large woody debris. These areas provide the best habitat for cover and feed consisting of small aquatic insects. They need to select streams that provide suitable habitat to survive summer and winter extremes for up to three years. Low summer flows, caused by agricultural irrigation diversions can have significant impact on smaller streams. Rainbow Trout juveniles can also be displaced by other fish, such as Coho, which tend to compete heavily for prime feeding areas as they have similar diets (Griffith 1986). It is believed that many of these developing juveniles will eventually move from nursery tributary streams down to the Thompson River. In rivers, Rainbow Trout will normally establish territories in shallow water along stream margins (Slaney and Northcote 1974). During their adult phase in streams and rivers they occupy riffles, runs, glides and pools and tend to occur in deeper and faster water than juveniles (McPhail 2007). As they grow, terrestrial insects are added to their diet and so riparian areas along river margins become increasingly important to them (McPhail 2007). AGE, GROWTH AND MATURITY Some Rainbow Trout will live their entire life cycle in small streams or rivers (resident) while others are of an adfluvial nature and will move down to large lakes. Information is limited on downstream migration traits but it is believed that they travel in the freshet and utilize cover habitats along the way to escape their predators (McPhail 2007). Adfluvial trout can live up to 8 years before maturing with the norm being 5 or 6 (MOE Okanagan Region Files). Their biggest obstacle in lakes is anglers who target them extensively. Rainbows can tolerate temperatures up to 270C but anything higher can be lethal (Lee and Rinne 1980 in McPhail 2007). In adfluvial populations, Rainbow Trout rely heavily on Kokanee and Sockeye forage once they move to large lake habits.
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HABITAT INDEX MATRIX The Habitat Index Matrices developed for this study indicate that Rainbow Trout depend heavily on pools, runs, riffles, boulder areas and cover afforded by riparian vegetation or in-stream woody debris. Log jams associated with pools are also used extensively for feeding and hiding. Tributary stream confluences are important as are small, stable streams which provide rearing habitat for juveniles and resident populations. Of the five species of fish discussed in these accounts for the CWR, Rainbow Trout are likely the most sensitive to habitat changes because they spend so much of their life cycle in these zones.
3.5 Steelhead
LIFE HISTORY Steelhead are the anadromous form of Rainbow Trout. In the Fraser River, steelhead are divided into 3 groups: coastal winter, coastal summer and interior summer. There are 3 interior summer stocks: West Fraser, Thompson and Chilcotin which comprise around 10 geographically separated spawning populations. Within the steelhead bearing waters of the lower Thompson watershed, there are 4 such areas – Deadman, Coldwater, Spius, and Coldwater, all of which include small tributary creeks (Levy and Parkinson, 2014). Steelhead enter freshwater in fall and winter and in spring and summer as separate runs. Winter-run Steelhead are almost fully mature when they enter freshwater and spawn shortly thereafter. Summer-run Steelhead are immature when they enter the rivers and spend up to 8 months holding in freshwater before spawning (McPhail 2007). Typically, most interior Steelhead are summer run. Run timing is genetically determined and summer and winter runs are distinct races (Ministry of Fisheries, 1999). The Thompson River and its larger tributaries, namely the Deadman and Nicola River were the second largest Steelhead producers in the Thompson-Nicola System in 1998 (DFO 1998b). Historical Steelhead runs consisted of 10,000 individuals in 1960 (Bos 2006). From 1984 to 2,000, spawning populations ranged from 550 to 3,300 (MoE 2000; LGL Ltd. 2007). During that time, the largest Steelhead producer was the Nicola with 1061 spawners on average, followed by the Deadman River and the Coldwater River (DFO 1998b). Steelhead are known to utilize the lower 99.0 km of the CWR for spawning (96.4 km above the fishway and 2.6 km below the fishway). Telemetry studies conducted in 1989, 1990, and 1991, suggest that steelhead do spawn in the 2.6 km section of CWR below the fishway, although the telemetry may underestimate the spawning population below the fishway (Morris, 2002). REPRODUCTION Timing of river entry is usually a factor of distance to spawning grounds and is affected by seasonal differences in water levels that allow fish to pass barriers that would be present at lower river levels (McPhail 2007). Spawning females typically dig nests in gravel sites with swift water, such as the tail of a pool where it breaks into a riffle (Ministry of Fisheries 1999). Unlike other pacific salmon, not all Steelhead die after spawning, some return to spawn again.
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Thompson-Nicola Steelhead populations have been documented as spring and summer-run populations. Alevins remain in gravels for up to three months, after which rearing takes place in tributaries of the Thompson mainstem for 2-3 years (Harding et al 1981 in DFO 1998b). Steelhead smolts then migrate to the Fraser River and to the ocean, returning after 3 years. A very small percentage will return to spawn a second time. AGE, GROWTH AND MATURITY Smolting usually occurs in spring and is determined by body size rather than age (McPhail 2007). Egg hatch depends on water temperature with eggs hatching typically four to seven weeks after spawning and fry emergence occurring during summer (Ministry of Fisheries 1999). Migration begins in May and dispersal offshore begins almost immediately after the smolts enter salt water. HABITAT INDEX MATRIX The Habitat Index Matrices developed for this study indicate that steelhead depend on gravel sites with adequate flows and associated pools and riffles. Overhead cover (large woody debris and overhanging vegetation) is important in small streams (Flebbe and Dolloff 1995 in McPhail 2007). Deep pools with abundant cover (boulders, ledges and overhanging vegetation) are important holding areas. Currents along the margins of streams are often used by Steelhead fry.
4.0 AQUATIC HABITAT INDEX
AHI scores derived for each reach of the river channel and left and right bank segments are analogous to the current productivity, which is defined as the sum of relative habitat values for all subareas occurring within a defined area (i.e., river channel extents of a respective reach) (Minns 1997). The AHI is a categorical scale of relative habitat value that ranks the river channel and bank segments in a range between Very High and Very Low. Our approach to development of the index incorporated the following components: 1. Utilization of all existing data that occurs in a spatial GIS format to develop the index. 2. Species Accounts (Section 3), developed to inform life history scores for discrete instream habitat units/features for key species of the Coldwater River. 3. The AHI was developed and calibrated using professional opinion similar to other habitat indices that have been developed for lake systems. Criteria were reviewed for relevancy and weighted appropriately (i.e., representative of the contribution to overall habitat sensitivity), and the index was developed in such a way that new data layers may be added in the future. The data previously collected for this project involved numerous spatial data layers and is substantially more complicated to develop than an AHI developed for a lake ecosystem. The dynamic nature of riverine ecosystems required that three separate layers of data be collected as part of the inventory phase. One layer of data was attributed to the primary character of the river and habitat features within, one layer was used to describe the right bank, and one layer was used to describe the left bank.
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4.1 Instream Polygon Scoring Matrix
Habitat unit classes (Section 3.1) were assigned a relative habitat value for each key fish life history stage/habitat quality categories. The relative productivity value was defined for each habitat unit as the sum of all production scores accrued by each of the fish species during the time they spend any part of their life history in that area (e.g., for spawning, rearing, and feeding) or accrued elsewhere as a result of a strict habitat requirement to use that area of habitat (e.g., for staging, migration, or cover). Habitat unit: Fish life history and habitat requirement matrices were developed to determine the relative habitat value for each habitat unit. Life history stages considered were: • Spawning • Rearing • General Living/Feeding Habitat Requirement categories included: • Substrate composition • Cover (habitat complexity) Life history accounts informed the relative values assigned to each habitat unit for each species and life history stage. The relative habitat unit values are presented in the following matrices (Tables 8-10). A 3-class score was assigned to each matrix cell; where 1 = low value, 2 = moderate value, and 3 = High value. The sum of species scores for each habitat unit were then transformed to a relative habitat value, which was calculated as the habitat unit score / maximum habitat unit score. The life history and habitat attributes were then weighted (Table 9) based on the relative importance of these components in the index for production.
Table 8. Fisheries relative habitat values (RHV) and weighted scores for aquatic and riparian habitat features. Rearing General Living Cover Habitat Variable Code RHV Wt. Score RHV Wt. Score RHV Wt. Score Backwater BW 1.00 28.75 0.23 1.31 0.20 3.45 Confluence CO 0.72 20.76 0.91 5.23 0.83 14.38 Low Flood Bench (graminoid) FL 0.57 16.25 0.11 0.65 0.08 1.44 Low Flood Bench (shrub-willow) FL 0.35 10.00 0.11 0.65 0.08 1.44 Mid Flood Bench FM 0.11 3.19 0.07 0.39 0.05 0.86 Glide G 0.44 12.78 0.36 2.09 0.27 4.60 Lake LK 0.44 12.78 0.68 3.92 0.72 12.36 Large Woody Debris LWD 1.00 28.75 0.91 5.23 0.98 16.96 Mixed Forest M 0.11 3.19 0.07 0.39 0.07 1.15 Pool P 1.00 28.75 1.00 5.75 1.00 17.25 Riffle RF 0.72 20.76 0.82 4.70 0.67 11.50 Riverine Marsh RM 1.00 28.75 0.16 0.91 0.15 2.59 Run RN 0.72 20.76 0.80 4.57 0.57 9.78 Side Channel SC 0.89 25.56 0.84 4.84 0.70 12.08
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Table 9. Relative value and weighted scores for mapped instream substrate composition. Substrate Class Relative Value Weighted Score Organic 0.3 5.175 Fines (silt/sand) 0.2 3.45 Gravel 1 17.25 Cobble 0.75 12.9375 Boulder 0.5 8.625 Bedrock 0.1 1.725
Figure 1. Relative weighting of life history and habitat attributes for instream AHI scores.
4.2 Riparian Polygon Scoring Matrix
Relative habitat values were assigned to riparian polygons (delineated within the 100- m riparian band) based the sum of values of four categories: Wildlife habitat rating; biodiversity rating; nutrient value/leaf and litter fall; and large woody debris recruitment (Table 10). The sum of relative habitat unit scores were then added to the other parameters of the bank AHI system relating to the current level of impact, degree of bank modifications, and current severity of erosion (caused by human activities).
Table 10. Ecological category: riparian habitat unit rating matrix (relative habitat value).
Habitat Type Code Qualifier Wildlife Rating LWD Biodiversity Rating Nutrients hd 0.40 0.30 0.30 0.40 b 0.40 0.70 0.30 0.30 Broadleaf Forest B ld 0.70 0.40 0.70 0.80 n 0.80 1.00 0.80 0.90 0.80 0.00 1.00 0.50 Backwater BW d 0.40 0.70 0.30 0.30 Cliff/Scree/Talus CS 0.10 0.00 0.20 0.10
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Habitat Type Code Qualifier Wildlife Rating LWD Biodiversity Rating Nutrients b 0.30 0.60 0.30 0.30 hd 0.40 0.50 0.30 0.40 p 0.50 0.50 0.30 0.50 Coniferous Forest C pb 0.50 0.50 0.30 0.50 md 0.50 0.60 0.40 0.50 ld 0.60 0.70 0.50 0.60 n 0.70 0.80 0.60 0.60 Cultivated Field CF 0.10 0.00 0.10 0.10 Dry Gulley DG 0.10 0.00 0.10 0.10 hd 0.10 0.00 0.00 0.00 b 0.10 0.00 0.10 0.10 pb 0.30 0.00 0.20 0.10 Grassland GN md 0.50 0.00 0.30 0.10 ld 0.60 0.00 0.40 0.20 n 0.60 0.00 0.40 0.20 b 0.50 0.00 0.50 0.30 hd 0.50 0.00 0.50 0.30 f 0.60 0.00 0.60 0.30 Low Flood Bench FL md 0.60 0.00 0.60 0.30 pb 0.60 0.00 0.60 0.30 ld 0.70 0.00 0.70 0.30 n 0.90 0.00 0.90 0.40 b 0.50 0.00 0.50 0.30 hd 0.50 0.00 0.50 0.30 md 0.50 0.00 0.50 0.30 Low Flood Bench - Graminoid FLG pb 0.50 0.00 0.50 0.30 f 0.70 0.00 0.70 0.30 ld 0.70 0.00 0.70 0.30 n 0.90 0.00 0.90 0.40 b 0.40 0.00 0.30 0.30 hd 0.40 0.00 0.30 0.30 f 0.40 0.00 0.50 0.50 Low Flood Bench - Shrub FLS pb 0.50 0.00 0.60 0.30 md 0.60 0.00 0.60 0.30 ld 0.70 0.00 0.70 0.30 n 0.90 0.00 0.90 0.40 f 0.40 0.40 0.50 0.40 hd 0.40 0.40 0.50 0.40 b 0.40 1.00 0.50 0.40 Mid Flood Bench FM md 0.60 0.80 0.60 0.70 ld 0.80 1.00 0.80 0.90 n 1.00 1.00 1.00 1.00 md 0.60 0.70 0.60 0.40 pb 0.60 0.80 0.70 0.40 Mixed Forest M ld 0.70 0.80 0.80 0.50 n 0.90 1.00 1.00 0.60 b 0.40 0.60 0.20 0.20 c 0.40 0.60 0.20 0.20 hd 0.40 0.50 0.30 0.40 Open Coniferous Woodland CW md 0.50 0.60 0.40 0.50 pb 0.50 0.60 0.40 0.50 ld 0.60 0.70 0.50 0.60 n 0.70 0.80 0.60 0.70 Railway RL 0.00 0.00 0.00 0.00 0.80 0.00 0.80 0.00 d 0.30 0.00 0.40 0.00 hd 0.50 0.00 0.50 0.00 River RI md 0.60 0.00 0.70 0.00 ld 0.60 0.00 1.00 0.00 n 0.60 0.00 1.00 0.00 0.00 0.00 0.00 0.00 Road Surface RZ hd 0.00 0.00 0.00 0.00 Rural RU b 0.00 0.00 0.00 0.10
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Habitat Type Code Qualifier Wildlife Rating LWD Biodiversity Rating Nutrients hd 0.00 0.00 0.00 0.10 md 0.30 0.20 0.20 0.30 pa 0.50 0.00 0.50 0.30 ld 0.40 0.40 0.40 0.40 Seasonally Flooded SF 0.20 0.00 0.20 0.20 hd 0.20 0.00 0.10 0.20 f 0.30 0.00 0.20 0.30 md 0.40 0.00 0.30 0.30 Shrub SH pb 0.40 0.00 0.30 0.30 n 0.40 0.00 0.50 0.30 ld 0.50 0.00 0.40 0.50 Silt Bluff/Exposed Bank SB 0.20 0.00 0.20 0.10 Side Channel SC 0.50 0.00 0.60 0.30 f 0.30 0.00 0.30 0.10 hd 0.40 0.00 0.30 0.10 Shrub-Steppe SS md 0.60 0.00 0.50 0.10 ld 0.70 0.00 0.60 0.10 n 0.80 0.00 0.70 0.10 0.00 0.00 0.00 0.10 Urban UR pa 0.00 0.00 0.00 0.00 1.00 0.00 1.00 0.40 b 0.60 0.00 0.50 0.10 Wetland WN hd 0.60 0.00 0.50 0.10 ld 0.80 0.00 0.80 0.40 md 0.80 0.00 1.00 0.60 n 1.00 0.00 1.00 0.40
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4.3 AHI Logic, Calibration, and Ranking
As part of the index development for the Coldwater River RIM, index development and calibration involved multiple iterations - assigning different weights to each of the parameters within the various habitat units, life history and ecological matrices. Following each iteration, the resultant sensitivity outputs were reviewed and scrutinized by fisheries biologists at Ecoscape. Calibration of the index was ultimately finalized using professional judgment. The AHI provides a categorical scale of relative habitat value that ranks the centerline and shoreline segments in a range between Very High and Very Low sensitivity. The index is relative, because it only assesses the sensitivity of one shoreline area relative to another within the extents of the river being examined. Index scores and rankings developed for the Coldwater River may not be directly transferable to other river systems without re-calibration. The following provides a definition for each AHI ranking: • Very High – Reaches/Segments ranked as Very High are considered integral to the maintenance of fish and wildlife species and generally contain important natural riparian and floodplain areas, complex mosaics of habitat units supporting high biodiversity and productivity values, and high value/use salmonid spawning, rearing, and general living habitats. These areas should be considered the highest priority for conservation and protection. • High - Reaches/Segments ranked as High are considered to be very important to the maintenance of fish and wildlife species along and within the river and areas can be ranked as High for a variety of reasons. These areas should be considered a priority for maintaining current conditions and a high prioritization for conservation should be given to these areas. • Moderate - Reaches/Segments ranked as Moderate are areas that are common along the river, and have likely experienced some habitat alteration. These areas may contain important habitat areas, such as shore holding areas (deep pools), but these areas are generally considered more appropriate for development. Because areas of high habitat value may be present, caution should be taken when considering changes in land use to avoid unnecessary harm or degradation to existing habitat values. • Low – Reaches/Segments that are generally highly modified. These areas have been impaired through land development activities. A common symptom along the river is high bank instability and bank erosion exacerbated by the removal/absence of riparian vegetation. Development within these areas should be carried out in a similar fashion as Moderate shoreline areas. However, restoration objectives should be set higher in these areas during redevelopment. • Very Low – Segments that are extremely modified and not adjacent to any known important habitat characteristics.
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After reviewing the distribution of the data from the iterations, logical breaks in the scores were used to determine the AHI rankings (discussed above). The breaks created reflect the clustering of scores based upon the output of the results, which somewhat mimic a normal distribution (although an analysis of data distribution was not conducted).
4.3.1 Centerline – Instream Zone AHI Logic
The AHI for each channel reach was calculated as the sum of life history scores for each reach. Table 11 presents the categories, relative category weightings, and logic for the Centerline AHI scoring.
The centerline AHI scores for respective reaches (AHIreach) was calculated using the following,
퐴ℎ 퐴푠푝 퐴ℎ표푙푑 퐴퐻퐼푟푒푎푐ℎ = ∑ [ × 푊ℎ] + ∑ [ × 푊푠푝] + ∑[푃푠푢푏 × 푊푠푢푏] + ∑ [ × 푊ℎ표푙푑] 퐴푡 퐴푡 퐴푡
(1)
where A represents the area of a described river feature (such as h is habitat, sp is spawning, and hold is holding), P represents a percentage of the area, At represents the total area of the river channel contained with the subject reach, and W represents the relative weighting given to the described river feature (Tables 8-11).
Table 11. The parameters and logic for the Centerline of the Coldwater River Category Category Criteria Weighting Logic General Living Instream Habitat unit and 5.75 (5%) % Area * Category Score Hydraulic Class polygons Rearing Instream Habitat unit and 28.5 (25%) % Area * Category Score Hydraulic Class polygons Holding Mapped deep pool features 11.5 (10%) % Area * Category Score Spawning Records collected during 2020 34.5 (30%) % total spawning area * Category Score Habitat1 field inventory Substrates % composition estimated during 17.25 (15%) % Area * Category Score 2020 field inventory Cover Instream Habitat unit and 17.25 (15%) % Area * Category Score Hydraulic Class polygons 1. For the AHI spawning polygons they were split according to identified reach breaks to allow a reach by reach analysis. To accomplish this, the data was transformed and described as a percentage of the total river area available for individual reaches for mapped anadromous spawning use.
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4.3.2 River Bank – Riparian Band AHI Logic
The left and right bank AHI segment scores (AHIbank) were calculated using Equation 2.
퐿푑표푐푘 퐴퐻퐼푆푒𝑔푚푒푛푡 = ∑[푃푛푎푡 × 푊푛푎푡] + ∑[푃푟푒푡푎𝑖푛 × 푊푟푒푡푎𝑖푛] + ∑ [ × 푊푑표푐푘] + 퐿푡 퐿푒푟표푠𝑖표푛 ∑ [ × 푊푒푟표푠𝑖표푛] − 푀표푑푖푓푒푟 퐿푡
(2)
where L is the length of the bank of a described river feature. Modifiers are either railways, roads or other large modifications to the bank or near the bank. Table 12 presents the categories, relative category weightings, and logic for the river bank AHI scoring.
Table 12. The parameters and logic for the banks of the Coldwater River Maximum Relative Percent of Category Criteria Value (Score) the Category Logic Percent Natural Percent Natural 4 100 % Natural Value (%nat)* Category Score (Pn) Wildlife a Wildlife 5 100 % Area * Category Score Large Woody Debris Large Woody 5 100 % Area * Category Score Recruitment a Debris Recruitment Biodiversity a Biodiversity 5 100 % Area * Category Score Leaf and Litterfall a Leaf and 5 100 % Area * Category Score Litterfall Erosion Low -0.75 5 % of Segment Length * Score Moderate -1.5 10 % of Segment Length * Score
High -4.5 32 % of Segment Length * Score Extreme -7.5 53 % of Segment Length * Score Bank Armouring Retaining wall, -2 % of Segment Length * Score rip rap
Impairments Shore Modifier Rail -5 If yes = Score Road -5 If yes = Score Other -2 If yes = Score a. See Table 11 for rating matrix and relative habitat values
5.0 INVENTORY SUMMARY OF RESULTS
The CWR flows a distance of approximately 94.9 km from its headwaters near the Coquihalla summit on the east side of Alpaca Peak and north sides of Llama and Zupjok Peaks. From the headwaters, the river flows eastward about 11km to the Coquihalla Highway then northward down the Coldwater Valley to Merritt and the confluence with the Nicola River.
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The CWR was divided into 25 reaches based on river channel morphology and character. The left bank (facing downstream) was divided into 156 segments and the right bank was broken into 174 Segments. The total length of the left and right river banks was 93.1 km and 92.4 km respectively.
5.1 Stream Primary Character
5.1.1 Shore Type Relative Distribution
The predominant shore type along the right and left bank are high bench communities. Low and middle bench active floodplain site associations combined account for about 36% of the left bank and about 41% of the right bank (Figure 2). Low and middle bench site associations occur in the geomorphologically dynamic portion of the floodplain and are maintained by a combination of prolonged flooding and site erosion/sedimentation (Mackenzie and Moran 2004). Low bench ecosystems occur on sites that are flooded for moderate periods (< 40 days) of the growing season, conditions that limit the canopy to tall shrubs, especially willows and alders. Annual erosion and deposition of sediment generally limit understory and humus development (Mackenzie and Moran 2004). Middle bench ecosystems occur on sites briefly flooded (10–25 days) during freshet, allowing tree growth but limiting tree species to only flood-tolerant broadleaf species such as black cottonwood (Mackenzie and Moran 2004).
Figure 2. Relative distribution of shore types along the left and right bank of the Coldwater River.
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Low Flood Bench Mid Flood Bench
Mixed Forest/Flood High Bench Coniferous Forest
Confluence Backwater
Silt Bluff Rock Bluff
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5.1.2 Land Use Relative Distribution
Both the left and right banks of the river are predominantly natural or have not been recently disturbed (Figure 3). On the left bank, over 74 km (80%) was still largely natural. On the right bank, nearly 60 km (60%) if segments were natural. Commercial and industrial land use encroachment/confinement and disturbance was observed primarily in Merritt and occurs along about 1.0% on both the left and right banks of the River. Agricultural land use occurs along 3.7% of the left bank and about 3.7% of the right bank. Rural land use occurs along about 11.2% of the left bank, and 23% of the right bank. Infrastructure accounts for about 3.2% and 4.4 % of the left and right banks respectively, which is largely a result of the 24 bridges record along the River.
Figure 3. Relative land use distribution of along the left and right bank of the Coldwater River. The total length of the left (LB) and right riverbanks (RB) was 93.1 km and 92.4 km respectively.
Natural Area
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Agriculture
Infrastructure Industrial
Rural Single Family (Urban)
Recreational
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5.1.3 Riverbank Level of Impact
While natural areas dominate the banks of the Coldwater River, medium to high-level impacts account for about 30% and 32% of the left and right banks respectively. Figure 4 summarizes the distribution of impact rating categories assigned to the left and right banks of the CWR.
Figure 4. Level of impact category distribution on the left and right bank of the Coldwater River.
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5.2 Stream Channel and Hydraulic Character
The hydraulic character of the CWR is dominantly riffle-pool on over 68 km (72%) of (Figure 5). The CWR also has long stretches of more dominantly riffle totaling about 26 km (28%).
Figure 5. Coldwater River hydraulic class distribution over the 94.9 km river centreline length.
5.3 Fish Habitat
In the absence of low flow considerations, physical habitat in the CWR was found very suitable for Chinook, Steelhead, and Coho production. Small residual Coho populations requiring adequate cover have been documented in Nicola backwaters and side channels, while the Coldwater River has hosted significant historical spawning populations (Kosakoski and Hamilton 1982). Deep pools, important for cover and general living as well as holding areas for anadromous migrations, amount to about 2.48 ha of the CWR (Figure 6). Large woody debris (LWD) provides important structural cover/complexity for fish with 1.11 ha of large woody debris recorded the CWR field survey. Suitable spawning habitat was recorded for prominent gravel/pebble features through runs, associated with LWD, and at the outlets of pools. These features areas account for about 0.53 ha. The recorded spatial extent of spawning is an underestimate of total potential spawning habitat and fish use in the CWR. Over 68 km of the River is riffle-pool and suitable spawning substrates were documented throughout. Key rearing areas for Chinook were described by Federenko and Pierce (1982) as flooded pastures, backwaters and sloughs adjacent to spawning areas. In the CWR, mapped backwaters amounted to about 0.87 ha, while side channels and seasonally inundated low flood benches accounted for about 14.64 ha and 38.72 ha respectively. Side channels and low flood sites were not mapped as singular habitat features and are
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not plotted in Figure 6. The low flood sites are important seasonal habitats that are generally represented as linear bands along the river channel. These sites are flooded for moderate periods (< 40 days) of the growing season, during which time they may provide seasonal nursery and rearing habitat for juvenile salmonids. The data summarized in Table 13 and illustrated on Map Set 2 was also incorporated into the AHI (Section 6.1).
Figure 6. Relative distribution of key habitat elements mapped during the Coldwater River inventory. Percentage values shown in the illustration represent the estimated spatial coverage of respective features over the total instream area (~hectares).
Table 13. Mapped aerial coverage and linear extents of fish habitat in the Coldwater River.
Row Labels Combined Cumulative Length Relative linear abundance in surveyed Area (m2) (m) stream length (83,132 km) Boulder 38,980 1,870 2.20% Deep Pool 24,773 3,637 4.40% Instream Vegetation 480 120 0.10% Large Woody Debris 11,120 2,446 2.90% Over Stream Vegetation 3,351 1,933 2.30% Backwater - Rearing/Nursery 8,654 1,193 1.40% Low Flood - Rearing/Nursery 387,154 - - Side Channel 146,426 - - Small Woody Debris 180 90 0.10% Spawning Habitat 5,256 811 1.00% Undercut Bank 48 140 0.20%
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Large woody debris and associated spawning habitat.
Backwater (rearing) Side channel (rearing/spawning)
5.4 Modifications
Instream and bank modifications and features were recorded in the field as points and summarized in Table 14. It should be noted that general clearing/removal of riparian vegetation and encroachment by field and urban and rural development was not recorded as individual points and instead were captured within the percent disturbed field for individual shore segments. Only 4 water withdrawals (intakes) were documented along CWR channel. However, wells (domestic and agricultural) that draw from the shallow groundwater associated with the CWR were not mapped in this project scope as they would be setback from the river channel and not visible during the field survey. Bank armouring (rip rap) was recorded on over 2.5 km of the left bank and about 3.6 km of the right bank. Linear development along the CWR have notable impacts with 24 bridges, and associated riparian alteration from road, rail, and pipeline developments.
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Table 14. Summary of anthropogenic features and modifications catalogued during the Coldwater River Inventory. Feature Bank Sum of Length (m)1 Count of Modification Type Bridge Both 308 24 Livestock Access Left 20 3 Right 3 1 General riparian modifications Both 5 1 (e.g., riparian clearing) Left 609 8 Right 866 18 Pipe Crossing Both 38 3 Rec Access Both 40 2 Left 324 14 Right 229 9 Retain Wall/Bank Stabilization Right 20 1 Rip Rap Both 100 1 Left 2555 40 Right 3598 54 Road Both 27 3 Left 791 5 Right 158 4 Water Withdrawal Left 0² 2 Right 0² 2 1. The total lengths of the left (LB) and right river banks (RB) were 161.5 km and 159.1 km, respectively. 2. Number of water withdrawals were recorded but lengths were not recorded.
Bridge Water Withdrawal (Improperly screened intakes result in impingement or entrainment of fish).
Pipeline Crossing Rip rap and Bank Stabilization
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5.5 Bank Stability and Erosion
High to extreme severity bank erosion was documented on approximately 2.1 km (2.2%) of the left bank and 1.6 km (1.7%) of the right bank (Table 15). Bank instability appeared to be largely attributed to the lack of riparian vegetation and encroachment associated with agricultural land use and rural and recreational disturbance. Other features, however, were natural such as cut banks and silt bluffs. All erosion features are shown in Map Set 2 and are included in the data deliverables. Bank segments with prominent erosion are listed in Table 16.
Table 15. Summary of riverbank integrity and erosion along the Coldwater River.
Sum of erosion length (m)1 Percent of respective riverbank Left 14,534 15.6% Extreme 944 1.0% High 1,116 1.2% Moderate 6,895 7.4% Low 5,580 6.0% Right 14,179 15.3% Extreme 298 0.3% High 1,256 1.4% Moderate 8,172 8.8% Low 4,453 4.8% Total 28,713 The total length of the left and right riverbanks was 93.2 km and 92.5 km respectively.
High Severity Erosion
Extreme Severity Erosion
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Table 16. Summary of prominent left bank and right bank erosion by segment.
Left Bank Right Bank Extreme Erosion High Erosion Extreme Erosion High Erosion Segment (m) (m) Segment (m) (m) 5 176 22 108 28 72 20 181 30 101 106 7 39 138 105 2 49 85 75 220 51 62 64 159 48 121 44 81 94 146 163 43 50 41 129 99 61 115 128 66 83 122 104 20 15 40 103 125 35 35 60 43 36 66 30 146 83 61 30 121 83 140 165 72 103 81 43 28 118 50 61 15 122 168 64 19 142 60 150 98 150 80 5.6 Coldwater River Condition Score
A condition score was assigned to each river reach. This rating system was designed with the intent of providing a more measurable parameter in evaluating the watercourse condition and monitoring and evaluating habitat changes on local watercourses and associated riparian and floodplain communities. The sum of weighted scores equaled 4.47 (out of 6), with the Coldwater River receiving a stream grade of 74.5% (Table 17).
Table 17. Level of impact rating / condition score for the Coldwater River. Sum of Length Condition Value Impact Rating (m) Score % of River Weighted Score nil-nil 18,478.6 6 19.48% 1.17 nil-low 35,949.5 5 37.90% 1.90 low-low 4,878.9 4 5.14% 0.21 nil-mod 12,779.7 4 13.47% 0.54 low-mod 17,278.0 3 18.22% 0.55 mod-mod 5,482.4 2 5.78% 0.12 Sum 94,847.0 4.47 Condition Score 74.5% 1Reach condition references the condition of both banks. E.g., high-high translates to high level of impact on both banks over the reach. Numeric Bank Impact Scores: Nil=3;Low=2; Mod=1; High=0
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6.0 AQUATIC HABITAT INDEX RESULTS
The AHI results summarized below are illustrated in Map Series 2 and the raw AHI analysis scores are included in Appendices A – C with centerline and bank segment information. Section 6.1 summarizes the AHI scores and resultant rankings (i.e., Very Low – Very High) for the 25 reaches of the CWR, represented in the maps and data analysis as the centerline. Section 6.2 summarizes the AHI scores and resultant rankings for the respective left and right bank segments.
6.1 The River
The Coldwater River was largely assessed as having a High Aquatic Habitat Index rating. High and Very High rated reaches were not separated since important habitat features and attributes occur over all segments. At the same time, there were no segment that received Low AHI scores. The centerline AHI analysis resulted in about 70% of the river ranked as High and the balance rated as Moderate (Table 18). The centerline/reach AHI rankings are illustrated in Figure 7.
Table 18. Relative AHI rank distribution (by length) of the Coldwater River.
AHI Category Total Length (m) Percent of River High 66,778 70% Moderate 28,069 30% 94,847
Figure 7. Centerline/reach AHI scores and AHI Rank values (Low/Moderate/High/Very High).
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6.2 The Banks
The AHI relative ratings along the right and left banks are reasonably balanced across the Very High and High, Moderate, and Low categories as the Coldwater river meanders from one side of the highway to the other and through rural, agricultural, and natural areas (Table 19). Segments scoring High and Very High accounted for 54% and 55% of the left and right bank respectively. Figures 8 and 9 illustrate respective segment scores on the left and right banks.
Table 19. Relative AHI rank distribution (by length) of the left and right banks (looking downstream) of the Coldwater River.
Segment/AHI Ratings Sum of Segment Length (m) Percent of Bank Very High 15,035 16% High 35,358 38% Left Moderate 18,652 20% Low 24,100 26% Very High 6,797 7% High 44,542 48% Right Moderate 21,255 23% Low 19,819 21%
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Figure 8. Left bank segment AHI scores.
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Figure 9. Right bank segment AHI scores.
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7.0 DISCUSSION
Flood ecosystems are intensively used by many wildlife species. These are lush habitats with structural elements often not found in adjacent uplands. In addition, the low flood sites may provide critical rearing habitat for juvenile salmonids during seasonal inundation periods. The High AHI scores/ranks supports this ecological statement; where the mosaic of riparian habitats and complex instream habitat subunits and diverse fish life history utilization combine to represent the highest centerline and bank AHI scores throughout the CWR. The areal extent of flood associated ecosystems remains constant in a stream reach over time, given no fundamental change in water regime or sediment load, but their location in the floodplain changes in response to stream channel changes (Mackenzie and Moran 2004). Flood ecosystems are maintained by a combination of annual flooding, erosion, channel movement, and deposition, which modify the site conditions on the floodplain regularly. Middle bench ecosystems will succeed low benches as sites accumulate sediments and become raised above the stream. With human influence, continued isolation of middle or low bench ecosystems from the regular flooding, through sediment accumulation or stream channel changes, hastens the natural succession and can lead to the formation of seral ecosystems that progress towards modified high bench ecosystems (Mackenzie and Moran 2004). The High AHI scores/ranks on the CWR are threatened by a variety of instream and upland activities. The loss of riparian vegetation from logging, hay/crop production, infrastructure, and urban development limit the natural river cooling mechanisms in turn exacerbating rising river temperatures caused by increasingly hot and arid climates such as those found in the lower reaches of the CWR. Stream bank destabilization additionally leads to wider and shallower stream sections, consequently increasing temperatures. Juvenile rearing is affected by local river temperature variations prompting fish to seek colder groundwater inflows and shade. River tributary confluences generally supply cold water influxes to the CWR mainstem. However, many natural areas continue to occur throughout the majority of the upper watershed and these high value habitats should be protected as they are critical to maintaining water quality and regulating temperatures throughout the CWR. Agricultural practices result in high nutrient loading, which can lead to increased biological oxygen demand and subsequent habitat impairments (e.g., algae blooms and substrate fouling) impacting sensitive benthic macroinvertebrates, and resident and anadromous fish. Plants and bacteria in the riparian zone remove excess nutrients through assimilation processes, however a lack of channel complexity can confine nutrients. Transient hydrological zones such as pools, eddies, channel margins and backwaters effectively remove excess nutrient loading (Johnson 2016). Agricultural side channels and runoff locations provide insight into point-source nutrient loading, where systems may benefit from floodplain reconnection or runoff diversion. Only 4 water withdrawals were recorded within the CWR channel. Shallow groundwater wells situated along the river, yet beyond the channel (i.e., throughout expansive mid and high flood benches along the CWR) were not mapped during the
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field survey. Water withdrawals can directly impact fish as fry can become trapped and lost in withdrawal canals. Initiative should be taken to ensure water withdrawals are properly screened to prevent small-bodied fish and fry entrainment. The Department of Fisheries and Oceans (DFO) Freshwater Intake End-of-Pipe Fish Screen Guidelines can be used to determine appropriate screen sizes. In addition to direct effects on fish, extensive water withdrawals (from both instream and shallow groundwater wells on the floodplain) can exacerbate the risks associated with low river flows triggered by climate variability. Low summer flows have the potential to diminish the availability of suitable spawning habitat for a variety of fish species as waters recede through low floodplains and riverine marshes. Low flows have the added risk of stranding, trapping rearing juveniles in high quality backwater habitats, where survival depends on the availability of food, cover, and cool waters. Furthermore, low summer flows further elevate the risk to fish associated with elevated stream temperatures and increased stress on fish, which can lead to lethal consequences. Fish species such as Coho may be forced to use lower reaches as low flows result in inaccessibility to formerly used higher reaches. An increase in the abundance of cover in lower reaches would lead to the creation of suitable Coho habitat. Additional investigation should be initiated to determine the significance of backwater habitat to fish in the CWR. To avoid excessively low flows, it is imperative that constructive regulations (Environmental Flow Needs) are set to limit excessive water withdrawal from the CWR during drought periods. Recognizing the above, it is paramount that landuse planning and management of the CWR focus on conservation and restoration of floodplain and riparian ecosystems. In addition, opportunities should be explored to increase the relative abundance of off channel and back water habitats and protect cold water refuge habitats for improved salmon rearing/nursery potential. For example, the constructed groundwater rearing habitat along the Coquihalla Highway (photo below) is no longer functionally connected to the Coldwater mainstem from a combination of channel changes and beaver activity. Restoring a functional connection for fish and improving in-water cover may increase the habitat suitability and likelihood of this feature being used by juvenile salmonids.
Constructed groundwater rearing habitat along the Coquihalla Highway (Hwy 5). This feature no longer has a functional connection to the Coldwater River and efforts to restore this connection should be implemented to increase juvenile fish rearing potential.
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Hard armouring of gravel banks can reduce the supply of gravel through natural stream channel migration processes and the removal of riparian vegetation hastens bank erosion and fine sediment deposits. Moreover, upland activities can impact floodplains. Several bank restoration features were observed throughout the lower reaches of the CWR. Future riparian and channel-bank restoration should use similar bioengineering techniques, which include increasing channel complexity, large woody debris, gravel sources, and more intact stream banks. Benefits of these activities will include bank stabilization and habitat restoration.
Large woody debris revetment and bank stabilization on the CWR.
The CWR is a high value anadromous and resident system regardless of individual reach AHI scores. A lower AHI reach score does not imply that particular reach is of low value. Rather the combination of habitat attribute values in that reach contribute less to fisheries and aquatic production than other reaches. However, these lower scoring reaches are still important for migration and general living. Conservation of existing riparian conditions is paramount to prevent a reduction in Bank AHI scores for respective segments. The scores and corresponding rankings established in this analysis should form the baseline when reviewing current and proposed activities along the River. The review of existing or proposed activities should be measured against these baseline AHI scores using the metrics and relative habitat value scores for riparian band habitat units of the Bank AHI (net change analysis). In doing so, such activities and the potential impacts and modifications they may cause can be evaluated in accordance with the Canadian Policy for the management of fish habitat; where No Net Loss is the guiding principle. Further investigation regarding the impacts and potential mitigation of extensive water withdrawal for upland agricultural uses and implications of climate change on increased stream temperatures should be undertaken. In light of the extensive impacts of excessive water withdrawal and to provide continuity and consistency in this assessment, it is recommended that further cataloguing and indexing of large tributary reaches be undertaken to document additional important fish habitat and potential impairments in the Coldwater system.
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8.0 CLOSURE
This Document has been prepared for the exclusive use of the Fraser Basin Council and project partners. It has been prepared based upon information collected during the comprehensive field inventory and other related documentation. Questions or comments in reference to this report, and the data presented should be forwarded to the undersigned.
Respectfully Submitted, ECOSCAPE Environmental Consultants
Scott McGill, R.P.Bio Robert Wagner, B.Sc. Fisheries Biologist GIS Analyst [email protected] [email protected]
Kyle Hawes, R.P.Bio Senior Aquatic Biologist [email protected]
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REFERENCES
Bos, C. J. 2006. Thompson River steelhead workshops and consultation report. 27p. COSEWIC 2002. COSEWIC assessment and status report on the coho salmon Oncorhynchus kisutch (interior Fraser population) in Canada. Committee on the Status of Endangered Wildlife in Canada. Ottawa. viii + 34 pp. Department of Fisheries and Oceans. 1997. Strategic review of fisheries resources for the South Thompson-Shuswap Habitat Management Area. Fraser River Action Plan. Department of Fisheries and Oceans. 1998a. Salmon watershed planning profiles for the Thomson Nicola Habitat Management Area. Fraser River Action Plan. Department of Fisheries and Oceans. 1998b. Strategic review of fisheries resources for the Thompson Nicola Habitat Management Area. Department of Fisheries and Oceans. 1999. Stock assessment of Thompson River/Upper Fraser River coho salmon. Department of Fisheries and Oceans. 2016. DRAFT Thompson Steelhead Recovery and Management Plan. Griffith, R. P. 1986. Rainbow trout production and implications of coho salmon enhancement in the Bessette Creek Drainage, tributary to the Middle Shuswap River. Fisheries Improvement Unit. BC Fisheries Branch. Groot, C. and L. Margolis (eds). 1991. Pacific salmon life histories. University of British Columbia Press, Vancouver, B.C. Interior Fraser Coho Recovery Team. (2005). Species at risk proposed recovery strategy: coho salmon (interior Fraser River populations), Oncorhynchus kisutch. Fisheries and Oceans Canada. 137p. Irvine, J.R., K. Wilson, B. Rosenberger and R. Cook. 1999. Stock assessment of Thompson River/ Upper Fraser River coho salmon. Fisheries and Oceans Canada. Canadian Stock Assessment Secretariat. Research Document 99/28. Johnson, T.A.N., Kaushal, S.S., Mayer, P.M., Smith, R.M. and Sivirichi, G.M. 2016. Nutrient retention in restored streams and rivers: A global review and synthesis. Water, 8, 116; 28pp. Kosakoski, G.T. and R.E. Hamilton. 1982. Water requirements for the fisheries resource of the Englishman River, Vancouver Island, B.C. Department of Fisheries and Oceans. Levy D.A. and E. Parkinson. 2014. Independent review of the science and management of Thompson River steelhead. Prepared for Thompson Steelhead Technical Subcommittee c/o Cook’s Ferry Indian Band, Spences Bridge, BC. 104p. LGL Limited Environmental Research Associates, 2007. Development of an annual salmonid productivity assessment program for the Nicola River Watershed. Lloyd, D., K.Angove, G. Hope, and C. Thompson. 1990. A guide to site identification and interpretation for the Kamloops Forest Region. Land Management Handbook No. 23. February, 1990. BC Ministry of Forests. Lorz, H. W., and T. G. Northcote. 1965. Factors affecting stream location, timing and intensity of entry by spawning Kokanee (Oncorhynchus nerka) into an inlet of Nicola Lake, British Columbia. J. Fish. Res. Board Can. 22; 665-687.
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Mackenzie, W.H., and Jennifer Moran. 2004. Wetlands of British Columbia - A guide to identification. British Columbia Ministry of Forests, Forests Science Program. 287pp. Maricle, S.M., and I.A. McGregor. 1990. 1990 Coldwater River Fishway Enumeration, Sampling and Radio Tracking of Adult Steelhead. Ministry of Environment, River Management Section. Mason, B., and R. Knight. 2001. Sensitive Habitat Inventory and Mapping. Community Mapping Network, Vancouver, British Columbia. 315pp + viii. M. Johannes, Editor. McPhail, J.D. 2007. The Freshwater Fishes of British Columbia. University of Alberta Press. Ministry of Environment. 1980. Assessment of the Coldwater River Relevant to Anadromous Fish Production Potential. Ministry of Environment. 2000. Overview of Interior Fraser Steelhead Management Report for the Fraser Steelhead Working Group. Ministry of Environment. 2006. Estimation of Steelhead Escapement to the Nicola River Watershed. Ministry of Fisheries. 1999. BC Fish Facts. Steelhead Trout. Oncorhynchus mykiss. Ministry of Forests, Lands and Natural Resource Operations Lake and River Files. 2011. Fish and Wildlife Branch, Penticton, B.C. Ministry of Water, Land and Air Protection. 2003. 2000 survey of sport fishing in British Columbia with summary information from the 1985, 1990 and 1995 surveys. Province of BC, Victoria, BC. Ministry of Water, Land and Air Protection. 2004. Accounts and measures for managing identified wildlife. Identified Wildlife Management Strategy. Version 2004. Minns, C. 1997. Quantifying “no net loss” of productivity of fish habitats. Can. J. Fish. Aquat. Sci. 54: 2463-2473. Morris, A. 2002. Summary of the 2002 Coldwater River fishway operation and enumeration of anadromous and non-anadromous Oncorhynchus mykiss. Prepared for The Ministry of Water, Land, and Air Protection, Fish and Wildlife and Science Allocation, Kamloops BC. Nelson, T., B. Bocking, and M. Gaboury. 2001. Coldwater River watershed recovery plan. Prepared for Pacific Salmon Endowment Fund. Pynn, L. 2015. Nicola Valley waterways become trickles from overuse. Vancouver Sun, 18 September, 2015. Redfish Consulting. 2005. Final survey results of select lakes in the Kamloops area inhabited by kokanee – Year 4. 2004. Resource Inventory Committee. 2001. Reconnaissance (1:20000) fish and fish habitat inventory: Standards and procedures. Version 2. 170pp. Resource Inventory Committee. 2001. Standards for Fish and Fish Habitat Maps. Version 3.0. Province of British Columbia. 66pp. Schleppe, J., 2010. Okanagan Lake Foreshore Inventory and Mapping. Ecoscape Environmental Consultants Ltd. Project File: 10-596. 2011. Prepared for: Okanagan Collaborative Conservation Program Sebastian, D.C. and B.A. Yaworski. 1984. Summary of Nicola fisheries assessment, 1980-83. Prepared for: Fisheries Improvement Unit, Ministry of Environment. 73p.
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Slaney, P.A., and T.G. Northcote. 1974. Effects of prey abundance on density and territorial behavior of young Rainbow Trout (Salmo gairdneri) in laboratory stream channels. J. Fish. Res. Board Can. 31:1201-1209. Steelhead Society of BC. 2014. Steelhead Society of BC’s Thompson River Related Fish Habitat Projects. Tredger, C.D., 1980. Assessment of The Coldwater River Relevant to Anadromous Fish Production Potential. Prepared for: Fish Habitat Improvement Section, Fish and Wildlife Branch, Ministry of Environment. Turcotte LA, Shrimpton JM. Assessment of spawning site fidelity in interior Fraser River Coho salmon Oncorhynchus kisutch using otilith microchemistry, in British Columbia, Canada. J Fish Biol. 2020; 1-9. Walthers, L.C. and J.C. Nener. 1997. Continuous water temperature monitoring in the Nicola River, BC. 1994: implications of high measured temperatures for anadromous salmonids. Can. Tech. Rep. Fish. Aquat. Sci. 2158: 65p. 19 Walthers, L.C. and J.C. Nener. 1998. Water temperature monitoring in the Nicola River, BC. 1995: implications of measured temperatures for anadromous salmonids. Can. Man. Rep. Fish. Aquat. Sci. 2443: 58p. Webb, S., Bison, R., and J. Renn. 2000. The reproductive biology of steelhead (Oncorhynchus mykiss) in the Nicola River, as determined by radio telemetry 1996/97 and 1998/99. Prepared for: The Ministry of Environment, Lands & Parks Webster, J. 2007. 2007 Kokanee fry out-migration, Mission Creek spawning channel - 2006 Brood Year. Willms, T. 2021. Personal Communications
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MAPSHEETS
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APPENDIX A
Coldwater River Reach Data (centerline survey) with AHI Scores
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Appendix A - Coldwater River Reach Data (centerline survey) with AHI Scores
Reach AHI Score AHI RIVERNAME DATE CREW WEATHER AIRTEMP STAGE PHOTONUM PRIMARY IMPACT_RAT HYDRAULIC PATTERN PERCENT_GR SPAWNING_H LIVESTOCK_ BARS ISLANDS SUB_ORGANI SUB_FINES SUB_GRAVEL SUB_PEBBLE SUB_COBBLE SUB_BLDER SUB_BEDRK EMBEDDEDNE COMPACTION TOTAL_COVE B perc_DP IV LWD OV SWD UC Shape_Length
1 23.76 High Coldwater 2020/07/08 SM/JA Light Rain 13 moderate P7091038, Modified mod_mod Riffle/Pool Irregular 1.5 Anadromous Side None 0 20 20 20 30 10 0 Low (0-25%) Low 35 20 40 0 20 10 10 0 5482 River P7090996 Wandering 2 23.73 High Coldwater 2020/07/08 SM/JA Light Rain 13 moderate P7090934, Natural nil_low Riffle Irregular 1.5 Anadromous Yes Side None 0 10 10 20 20 40 0 Low (0-25%) Low 20 60 10 0 10 20 0 0 10492 River P7090913 Meandering 3 21.27 High Coldwater 2020/07/07 SM/JA Partly 14 moderate P7080826, Natural nil_low Riffle Irregular 0.5 Anadromous Yes Side None 0 10 20 20 30 20 0 Low (0-25%) Low 10 0 60 0 20 20 0 0 6487 River Cloudy P7080839 Wandering 4 18.46 Moderate Coldwater 2020/07/07 SM/JA Partly 14 moderate P7080807, Natural nil_low Riffle/Pool Irregular 2 Anadromous Yes Braided Occasional 0 20 20 30 20 10 0 Low (0-25%) Low 40 0 30 0 30 0 20 20 4591 River Cloudy P7080788 Meandering 5 23.46 High Coldwater 2020/07/06 SM/JC Light Rain 13 moderate P7070739, Natural nil_nil Riffle/Pool Irregular 2.5 Anadromous Side Occasional 0 10 20 20 30 20 0 Low (0-25%) Low 40 20 30 0 30 0 10 10 5589 River P7070722 Meandering 6 20.49 Moderate Coldwater 2020/07/06 SM/JC Light Rain 13 moderate P7070717, Natural nil_low Riffle/Pool Irregular 2 Anadromous Side Occasional 0 10 10 20 30 20 10 Low (0-25%) Low 10 40 10 0 50 0 0 0 5161 River P7070705 Meandering 7 24.72 High Coldwater 2020/07/06 SM/JC Light Rain 13 moderate P7030657, Natural low_low Riffle/Pool Irregular 2.5 Anadromous Mid-channel Occasional 0 10 10 20 30 30 0 Low (0-25%) Low 5 80 10 0 0 0 10 0 2129 River P7030667 Meandering 8 26.29 High Coldwater 2020/07/02 SM/KH Over cast 10 moderate P7030659, Natural nil_mod Riffle Sinuous 2 Anadromous Mid-channel None 0 10 10 20 20 40 0 Low (0-25%) Low 5 50 0 0 20 20 10 0 1765 River P7030657 9 25.49 High Coldwater 2020/07/02 SM/KH Over cast 10 moderate P7030642, Natural nil_low Riffle/Pool Irregular 1.5 Anadromous Side Occasional 0 10 40 20 20 10 0 Low (0-25%) Low 30 10 25 0 25 20 10 10 1121 River P7030636 Meandering 10 22.37 High Coldwater 2020/07/02 SM/KH Over cast 10 moderate P7030615, Natural low_mod Riffle/Pool Irregular 1.5 Anadromous Side None 0 20 20 20 20 20 0 Low (0-25%) Low 10 50 25 0 25 0 0 0 3354 River P7030586 Meandering 11 12.48 Moderate Coldwater 2020/07/02 SM/KH Over cast 10 moderate P7030573, Natural nil_low Riffle Sinuous 3 Anadromous None None 0 10 10 20 30 30 0 Low (0-25%) Low 5 60 40 0 0 0 0 0 1029 River P7030571 12 27.18 High Coldwater 2020/07/02 SM/KH Over cast 10 moderate P7030560, Natural nil_low Riffle/Pool Sinuous 4 Anadromous None Occasional 0 20 20 20 20 20 0 Low (0-25%) Low 10 60 40 0 0 0 0 0 1109 River P7030563 13 22.12 High Coldwater 2020/07/02 SM/KH Over cast 10 moderate P7030543, Natural nil_low Riffle Sinuous 2.5 Anadromous Mid-channel None 0 10 10 20 30 30 0 Low (0-25%) Low 10 60 0 0 0 20 10 10 1457 River P7030541 14 27.54 High Coldwater 2020/07/02 SM/KH Over cast 10 moderate P7030526, Natural nil_low Riffle Sinuous 2 Anadromous Side None 0 10 10 20 30 30 0 Low (0-25%) Low 20 40 10 0 20 20 0 10 3327 River P7030506 15 20.56 Moderate Coldwater 2020/07/02 SM/KH Over cast 10 moderate P7030479, Natural low_mod Riffle/Pool Irregular 3 Anadromous Side None 0 10 10 20 30 30 0 Low (0-25%) Low 30 40 30 0 10 10 10 0 13924 River P7030463 Meandering 16 27.67 High Coldwater 2020/07/01 SM/KH Over cast 13 moderate P7020291, Natural nil_low Riffle Sinuous 3 Anadromous None None 0 10 10 20 20 40 0 Low (0-25%) Low 10 60 0 0 0 40 0 0 1176 River P7020290 17 23.76 High Coldwater 2020/06/30 SM/KH Light Rain 8 moderate P7010245, Natural nil_mod Riffle/Pool Irregular 1.5 Anadromous Side None 0 20 35 35 10 0 0 Low (0-25%) Low 25 0 50 0 25 25 0 0 11014 River P7010232 Meandering 18 28.84 High Coldwater 2020/06/30 SM/KH Light Rain 8 moderate P7010135, Natural nil_nil Run Sinuous 1 Anadromous Side None 0 10 35 35 20 0 0 Low (0-25%) Low 25 0 50 0 25 25 0 0 380 River P7010139 19 19.40 Moderate Coldwater 2020/06/30 SM/KH Light Rain 8 moderate P7010123, Natural low_low Riffle/Pool Irregular 3 Anadromous Side None 0 0 10 20 30 40 0 Medium Medium 40 30 20 0 20 20 10 0 2750 River P7010124 Meandering (25-75%) 20 20.09 Moderate Coldwater 2020/06/29 SM/KH Over cast 10 moderate P6300054, Natural nil_nil Riffle Sinuous 3 Anadromous Side None 0 10 10 20 30 30 0 Medium Medium 25 10 10 0 10 50 10 10 614 River P63000049 (25-75%) 21 24.20 High Coldwater 2020/06/29 SM/KH Over cast 10 moderate P6300043, Natural nil_nil Riffle/Pool Sinuous 1.5 Anadromous Side None 0 10 20 30 20 20 0 Low (0-25%) Low 60 10 30 0 20 20 10 10 181 River P6300049 22 NA High Coldwater 2020/06/29 SM/KH Over cast 10 moderate P6300026, Natural nil_nil Riffle/Pool Irregular 1.5 Anadromous Side None 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2344 River P6300017 Wandering 23 NA High Coldwater 2020/06/29 SM/KH Over cast 10 moderate Natural nil_nil Riffle/Pool Irregular 1.5 Anadromous Side None 0 0 0 0 0 0 0 0 Low 60 10 30 0 20 20 10 10 6603 River Meandering 24 NA High Coldwater 2020/06/29 SM/KH Over cast 10 moderate Natural nil_nil Riffle/Pool Sinuous 1.5 Anadromous Side None 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1072 River 25 NA High Coldwater 2020/06/29 SM/KH Over cast 10 moderate P6300013, Natural nil_nil Riffle/Pool Irregular 1 Anadromous Side None 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1696 River P6300005 Wandering
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APPENDIX B
Riverbank (Left and Right) Segment Data Base with AHI Scores
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Appendix B - Riverbank (Left and Right) Segment Data Base with AHI Score
erat
Bank Segment AHI_1 AHI_Category_Fin al SHORE_TYPE SHORE_MODI LAND_USE LEV_OF_IMP LIVEST_ACC PCTDISTURB PCTNATURAL CLIFF_BLUF ROCKY GRAVEL SAND CONFLUENCE WETLAND OTHER FLOOD_LOW_ FLOOD_MID_ FLOOD_HIGH AGRICULTUR COMMERCIAL CONSERVATI FORESTRY INDUSTRIAL INFRASTRUC INSTITUTIO MULTI_FAMI NATURAL_AR PARK RECREATION RURAL SINGLE_FAM URBAN_PARK RETAIN_WAL PERRETAIN_ PERRAIL_MO PERROAD_MO SUB_MODIFI BKSTBILI BANK_MAT Erosion_Low Erosion_Mod e Erosion_High Erosion_Extreme Shape_Length
Left 1 2.88 Moderate Flood Mid Bench None Natural Area Medium (10-40%) No 30 70 0 0 0 0 0 0 0 0 70 30 0 0 0 0 0 0 0 0 70 0 0 30 0 0 0 0 0 0 No High Gravel 81 0 0 0 589 Left 2 -1.08 Low Flood High Bench Dyke Park High (>40%) No 80 20 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 0 0 0 0 100 1 100 0 0 Yes High Dyke 0 0 0 0 107 Left 3 1.81 Low Flood Mid Bench Dyke Rural High (>40%) No 60 40 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 0 0 100 0 0 1 5 0 0 Yes High Dyke 0 0 0 0 662 Left 4 3.73 High Flood Mid Bench None Natural Area Low (<10%) No 0 100 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 59 0 0 334 Left 5 -5.51 Low Flood Mid Bench None Single Family High (>40%) No 80 20 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 0 0 0 40 60 0 0 0 0 0 No Medium Gravel 0 0 0 176 200 Left 6 -0.07 Low Flood Mid Bench Log Yard Rural High (>40%) No 95 5 0 0 0 0 0 0 0 0 100 0 0 0 0 0 50 0 0 0 0 0 0 50 0 0 1 10 0 10 No High Gravel 0 101 0 0 361 Left 7 4.10 Very High Flood Mid Bench None Natural Area Low (<10%) No 5 95 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 177 Left 8 0.35 Low Flood Mid Bench Log Yard Industrial High (>40%) No 95 5 0 0 0 0 0 0 0 0 100 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 1 15 0 0 No High Gravel 0 0 0 0 900 Left 9 1.43 Low Flood Mid Bench None Natural Area Medium (10-40%) No 20 80 0 0 0 0 0 0 0 0 100 0 0 0 0 0 20 0 0 0 80 0 0 0 0 0 1 50 0 0 No Medium Gravel 0 156 0 0 300 Left 10 3.20 Moderate Gravel None Natural Area Low (<10%) No 20 80 0 0 0 0 0 0 0 0 100 0 0 0 0 0 20 0 0 0 80 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 317 Left 11 3.70 High Flood Mid Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 156 0 0 0 388 Left 12 3.65 High Gravel None Natural Area None No 0 100 0 0 90 10 0 0 0 0 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Low Gravel 78 0 0 0 167 Left 13 4.12 Very High Gravel None Natural Area None No 0 100 0 0 100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Low Gravel 0 0 0 0 241 Left 14 4.16 Very High Flood Mid Bench None Natural Area Low (<10%) No 0 100 0 0 0 0 0 0 0 35 65 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 1 10 0 0 No Low Gravel 60 0 0 0 516 Left 15 -0.33 Low Flood Mid Bench None Rural High (>40%) No 95 5 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 0 0 0 100 0 0 2 15 0 0 No Medium Gravel 60 81 40 0 1160 Left 16 -5.44 Low Rocky Shore Road Infrastructure High (>40%) No 100 0 0 100 0 0 0 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 1 50 0 0 Yes High Cobble 0 0 0 0 91 Left 17 1.13 Low Flood Mid Bench None Rural High (>40%) No 75 25 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 20 0 0 80 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 596 Left 18 1.20 Low Gravel None Rural Medium (10-40%) No 50 50 0 0 100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 50 0 0 50 0 0 1 40 0 0 No Medium Gravel 0 0 0 0 257 Left 19 3.80 High Flood Mid Bench None Natural Area Low (<10%) No 5 95 0 0 40 0 0 0 0 0 60 0 0 0 0 0 0 0 0 0 95 0 0 5 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 391 Left 20 3.75 High Flood Mid Bench None Natural Area Low (<10%) No 2 98 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 98 0 0 2 0 0 0 0 0 0 No Medium Gravel 356 0 0 0 1552 Left 21 -6.13 Low Rocky Shore Railway Rural High (>40%) No 100 0 0 100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 100 0 0 1 30 0 0 Yes High Cobble 0 120 0 0 337 Left 22 3.96 High Flood Mid Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 25 75 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 16 0 0 579 Left 23 3.05 Moderate Flood Low Bench None Natural Area Low (<10%) No 5 95 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 5 0 0 95 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 215 0 0 428 Left 24 3.68 High Flood Mid Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 40 60 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 175 0 0 626 Left 25 3.86 High Flood Mid Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 5 95 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 101 26 0 0 640 Left 26 2.63 Moderate Flood Low Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Low Gravel 8 179 0 0 200 Left 27 3.55 Moderate Flood Low Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 91 0 0 32 699 Left 28 -0.60 Low Cliff/Bluff None Natural Area None No 0 100 90 0 0 0 0 0 0 0 10 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Low Gravel 0 0 0 72 118 Left 29 3.91 High Flood Mid Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 40 0 0 0 340 Left 30 -3.50 Low Cliff/Bluff None Natural Area None No 0 100 90 0 0 0 0 0 0 0 10 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Low Gravel 0 0 0 101 101 Left 31 2.91 Moderate Flood Mid Bench None Natural Area Low (<10%) No 5 95 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 45 354 Left 32 1.43 Low Flood Low Bench None Rural High (>40%) No 95 5 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 291 Left 33 4.14 Very High Flood Mid Bench None Natural Area Low (<10%) No 5 95 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 389 Left 34 2.01 Low Flood Low Bench None Agriculture Medium (10-40%) No 80 20 0 0 0 0 0 0 2 98 0 0 60 0 0 0 0 2 0 0 20 0 0 18 0 0 0 0 0 2 No Medium Gravel 641 0 0 0 1186 Left 35 4.28 Very High Cliff/Bluff None Natural Area None No 0 100 70 0 0 0 0 0 0 30 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Low Gravel 0 66 35 0 286 Left 36 0.24 Low Flood High Bench None Rural Medium (10-40%) No 80 20 5 0 0 0 0 0 0 10 10 75 0 0 0 0 0 0 0 0 20 0 0 80 0 0 0 0 0 0 No Medium Gravel 0 0 66 0 430 Left 37 4.00 High Flood Mid Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 393 Left 38 3.52 Moderate Flood Low Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 59 0 0 183 Left 39 -3.50 Low Gravel None Natural Area None No 0 100 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Low Gravel 0 0 0 138 138 Left 40 4.62 Very High Flood Low Bench None Agriculture Low (<10%) No 10 90 0 0 0 0 0 10 0 90 0 0 40 0 0 0 0 0 0 0 30 0 0 30 0 0 0 0 0 0 No Medium Gravel 95 0 0 0 358 Left 41 1.92 Low Flood Mid Bench None Agriculture High (>40%) No 100 0 0 0 0 0 0 0 0 0 100 0 100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 No Low Gravel 0 81 0 0 276 Left 42 0.04 Low Flood Low Bench None Rural Medium (10-40%) No 80 20 0 0 100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 100 0 0 1 30 0 0 No Medium Gravel 38 0 0 0 173 Left 43 4.02 Very High Flood Mid Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 40 60 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 332 Left 44 1.85 Low Flood Mid Bench None Agriculture High (>40%) No 100 0 0 0 0 0 0 0 0 0 100 0 100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 670 Left 45 2.90 Moderate Flood Low Bench None Natural Area Medium (10-40%) No 30 70 0 0 0 0 0 0 0 80 20 0 15 0 0 0 0 0 0 0 70 0 0 15 0 0 0 0 0 0 No Low Gravel 203 0 0 0 1456 Left 46 3.60 High Flood High Bench None Rural Low (<10%) No 10 90 0 0 0 0 0 0 0 10 0 90 0 0 0 0 0 0 0 0 10 0 0 90 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 148 Left 47 2.00 Low Flood Low Bench None Natural Area Low (<10%) No 20 80 20 0 0 0 0 0 0 80 0 0 0 0 0 0 0 0 0 0 80 0 0 20 0 0 0 0 0 0 No Low Gravel 0 396 0 0 477 Left 48 2.93 Moderate Flood Mid Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 25 75 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 56 397 Left 49 -1.97 Low Cliff/Bluff None Rural Low (<10%) No 10 90 70 0 0 0 0 0 0 0 15 15 0 0 0 0 0 0 0 0 10 0 0 90 0 0 0 0 0 0 No Low Gravel 0 0 0 85 113 Left 50 1.06 Low Flood Mid Bench None Natural Area None No 0 100 10 0 0 0 0 0 0 0 90 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Low Gravel 0 0 0 131 329 Left 51 -1.94 Low Gravel None Natural Area Low (<10%) No 10 90 0 0 90 0 0 0 0 0 10 0 0 0 0 0 0 0 0 0 90 0 0 10 0 0 0 0 0 0 No Low Gravel 0 0 0 119 160 Left 52 4.00 Very High Flood Low Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 90 10 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 200 Left 53 4.06 Very High Flood Low Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 0 90 0 0 10 0 0 0 0 0 0 No Low Gravel 0 0 0 0 258 Left 54 4.00 High Gravel None Natural Area None No 0 100 0 0 100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 80 0 0 20 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 222 Left 55 1.20 Low Flood High Bench None Rural Medium (10-40%) No 70 30 0 0 0 0 0 0 0 10 10 75 0 0 0 0 0 0 0 0 10 0 0 90 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 264 Left 56 4.00 High Flood Mid Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 10 90 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 148 Left 57 1.60 Low Flood High Bench None Rural Low (<10%) No 60 40 0 0 0 0 0 0 0 45 10 55 0 0 0 0 0 0 0 0 25 0 0 75 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 358 Left 58 5.03 Very High Flood Low Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 234 Left 59 1.15 Low Flood High Bench None Rural Medium (10-40%) No 100 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 No Medium Gravel 0 328 0 0 386 Left 60 3.75 High Flood Mid Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 40 60 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Low Gravel 0 187 0 0 466 Left 61 0.64 Low Flood Low Bench None Agriculture Medium (10-40%) No 60 40 0 0 0 0 0 0 0 50 50 0 60 0 0 0 0 0 0 0 40 0 0 0 0 0 1 5 0 0 No Low Gravel 0 83 209 0 325 Left 62 3.85 High Flood Mid Bench None Natural Area Low (<10%) No 10 90 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 90 0 0 10 0 0 0 0 0 0 No Low Gravel 82 29 0 0 327 Left 63 2.46 Moderate Flood High Bench None Rural Medium (10-40%) No 50 50 0 0 50 0 0 0 0 0 0 50 0 0 0 0 0 0 0 0 45 0 0 55 0 0 0 0 0 0 No Low Gravel 0 177 0 0 191 Left 64 3.62 High Cliff/Bluff None Natural Area None No 0 100 80 0 0 0 0 0 0 0 20 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Low Fines 106 169 0 0 465 Left 65 3.41 Moderate Flood Mid Bench None Natural Area Low (<10%) No 5 95 0 0 0 0 0 0 0 5 95 0 0 0 0 0 0 0 0 0 95 0 0 5 0 0 0 0 0 0 No Low Gravel 208 120 0 0 857 Left 66 2.61 Moderate Flood Low Bench None Natural Area Medium (10-40%) No 40 60 0 0 0 0 0 0 0 70 30 0 10 0 0 0 0 0 0 0 90 0 0 0 0 0 0 0 0 0 No Low Gravel 93 0 0 0 270 Left 67 4.06 Very High Flood Mid Bench None Natural Area Medium (10-40%) No 25 75 0 0 0 0 0 0 5 10 65 30 0 0 0 0 0 5 0 0 95 0 0 5 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 651 Left 68 0.66 Low Flood High Bench None Rural High (>40%) No 100 0 0 0 0 0 0 0 0 0 0 100 60 0 0 0 0 0 0 0 0 0 0 40 0 0 1 60 0 0 Yes Medium Gravel 0 0 0 0 291 Left 69 4.52 Very High Flood Mid Bench None Natural Area None No 0 100 0 0 20 0 0 0 0 30 50 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 476 Left 70 2.80 Moderate Gravel None Natural Area Medium (10-40%) No 20 80 0 0 100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 80 0 0 20 0 0 1 20 0 0 Yes High Gravel 0 0 0 0 390 Left 71 3.60 High Flood Mid Bench None Natural Area Low (<10%) No 10 90 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 95 0 0 5 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 196 Left 72 -0.30 Low Gravel None Rural High (>40%) No 70 30 0 0 100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40 60 0 0 0 0 0 0 No Low Gravel 0 203 0 0 203 Left 73 3.58 Moderate Flood Mid Bench None Natural Area Low (<10%) No 5 95 0 0 0 0 0 0 0 20 80 0 0 0 0 0 0 0 0 0 95 0 0 5 0 0 0 0 0 0 No Medium Gravel 127 0 0 0 430
#102 – 450 Neave Ct. Kelowna, BC V1V 2M2 tel: 250.491.7337 fax: 250.491.7772 web: www.ecoscapeltd.com 18-2715 Appendix B March 2021
erat
Bank Segment AHI_1 AHI_Category_Fin al SHORE_TYPE SHORE_MODI LAND_USE LEV_OF_IMP LIVEST_ACC PCTDISTURB PCTNATURAL CLIFF_BLUF ROCKY GRAVEL SAND CONFLUENCE WETLAND OTHER FLOOD_LOW_ FLOOD_MID_ FLOOD_HIGH AGRICULTUR COMMERCIAL CONSERVATI FORESTRY INDUSTRIAL INFRASTRUC INSTITUTIO MULTI_FAMI NATURAL_AR PARK RECREATION RURAL SINGLE_FAM URBAN_PARK RETAIN_WAL PERRETAIN_ PERRAIL_MO PERROAD_MO SUB_MODIFI BKSTBILI BANK_MAT Erosion_Low Erosion_Mod e Erosion_High Erosion_Extreme Shape_Length
Left 74 3.54 Moderate Gravel None Natural Area Low (<10%) No 5 95 0 0 100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 95 0 5 0 0 0 0 0 0 0 No Medium Gravel 256 100 0 0 1296 Left 75 3.26 Moderate Flood Mid Bench None Natural Area Low (<10%) No 10 90 0 0 10 0 0 0 0 0 90 0 0 0 0 0 0 0 0 0 90 0 0 10 0 0 0 0 0 0 No Low Gravel 108 203 0 0 1139 Left 76 3.94 High Gravel None Natural Area None No 0 100 0 0 100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 59 0 0 0 768 Left 77 4.00 High Flood Low Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 80 20 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 315 Left 78 4.31 Very High Cliff/Bluff None Natural Area None No 0 100 65 0 20 0 0 0 0 0 15 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Low Gravel 0 103 0 0 552 Left 79 5.12 Very High Flood Low Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 75 25 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 299 Left 80 4.52 Very High Cliff/Bluff None Natural Area None No 0 100 80 0 0 0 0 0 0 20 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Low Gravel 40 0 0 0 690 Left 81 3.83 High Flood High Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 81 0 0 0 349 Left 82 0.73 Low Flood Mid Bench None Natural Area High (>40%) No 75 25 0 0 0 0 0 0 0 30 70 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Low Gravel 27 101 0 0 648 Left 83 2.93 Moderate Flood High Bench None Natural Area None No 2 98 0 0 0 0 0 0 0 30 5 65 0 0 0 0 0 0 0 0 98 0 0 2 0 0 1 2 0 0 No Low Gravel 135 69 486 0 2102 Left 84 3.44 Moderate Flood Mid Bench None Natural Area Low (<10%) No 5 95 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Low Gravel 0 100 0 0 416 Left 85 2.32 Moderate Flood Mid Bench None Agriculture High (>40%) No 60 40 0 0 0 0 0 0 0 0 75 25 65 0 0 0 0 0 0 0 10 0 0 25 0 0 2 15 0 0 No Low Gravel 79 0 0 0 619 Left 86 3.67 High Flood Mid Bench None Natural Area Low (<10%) No 5 95 0 0 15 0 0 0 0 0 85 0 0 0 0 0 0 5 0 0 75 0 0 20 0 0 1 1 0 10 No Medium Gravel 161 121 0 0 2205 Left 87 3.90 High Flood Mid Bench None Natural Area None No 0 100 0 0 25 0 0 0 0 0 75 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 10 No Medium Gravel 104 0 0 0 805 Left 88 3.51 Moderate Flood High Bench None Natural Area Low (<10%) No 10 90 0 0 0 5 0 0 0 25 30 40 0 0 0 0 0 10 0 0 90 0 0 0 0 0 0 0 0 5 No Medium Gravel 101 0 0 0 850 Left 89 4.00 High Flood Mid Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 755 Left 90 -2.26 Low Gravel Road Infrastructure Medium (10-40%) No 25 75 20 0 35 0 0 0 0 30 10 5 0 0 0 0 0 70 0 0 30 0 0 0 0 0 1 25 0 0 No Medium Gravel 0 0 0 0 204 Left 91 4.00 High Flood Low Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 65 35 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 287 Left 92 3.18 Moderate Cliff/Bluff None Natural Area None No 0 100 60 0 40 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Low Gravel 0 126 0 0 158 Left 93 4.02 Very High Flood Mid Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 493 Left 94 1.91 Low Flood Mid Bench None Natural Area Medium (10-40%) No 25 75 5 0 40 0 0 0 0 0 55 0 0 0 0 0 0 10 0 0 75 0 5 10 0 0 0 0 0 10 No Medium Gravel 100 358 0 146 1437 Left 95 3.88 High Flood High Bench None Natural Area Low (<10%) No 1 99 5 0 0 0 0 0 0 0 0 95 0 0 0 0 0 1 0 0 99 0 0 0 0 0 0 0 1 0 No Low Gravel 0 101 0 0 1125 Left 96 4.00 High Flood High Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 314 Left 97 -5.00 Low Rocky Shore Railway Rural High (>40%) No 100 0 0 95 5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 100 0 Yes High Cobble 0 0 0 0 241 Left 98 4.05 Very High Gravel None Natural Area None No 0 100 0 0 100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 655 Left 99 -4.21 Low Rocky Shore Railway Rural High (>40%) No 90 10 0 85 5 0 0 0 0 0 10 0 0 0 0 0 0 0 0 0 10 0 0 90 0 0 0 0 90 0 Yes High Cobble 0 0 0 0 167 Left 100 3.81 High Rocky Shore None Natural Area None No 0 100 0 100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Cobble 437 0 0 0 1741 Left 101 -4.20 Low Rocky Shore Railway Rural High (>40%) No 80 20 0 80 20 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 0 0 90 0 0 0 0 80 0 Yes High Cobble 0 0 0 0 536 Left 102 4.00 High Gravel None Natural Area None No 0 100 20 0 80 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 317 Left 103 -3.36 Low Rocky Shore Railway Rural High (>40%) No 50 50 10 60 30 0 0 0 0 0 0 0 0 0 0 0 0 50 0 0 40 0 2 8 0 0 0 0 30 0 No Medium Cobble 80 304 81 0 1522 Left 104 3.61 High Flood High Bench None Natural Area None No 10 90 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 90 0 0 10 0 0 0 0 0 0 No Medium Gravel 0 13 0 0 498 Left 105 -0.23 Low Gravel None Rural High (>40%) No 90 10 0 0 90 0 0 0 0 0 10 0 0 0 0 0 0 0 0 0 10 0 15 75 0 0 2 25 0 0 No Medium Gravel 0 47 0 0 543 Left 106 3.40 Moderate Flood High Bench None Natural Area None No 15 85 0 0 0 0 0 0 0 50 0 50 0 0 0 0 0 0 0 0 90 0 10 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 338 Left 107 -5.80 Low Rocky Shore Road Infrastructure High (>40%) No 100 0 0 0 100 0 0 0 0 0 0 0 0 0 0 0 0 90 0 0 0 0 10 0 0 0 1 40 0 40 No Medium RipRap 0 0 0 0 238 Left 108 -2.61 Low Flood Low Bench Railway Natural Area Medium (10-40%) No 40 60 5 30 0 0 0 0 0 65 0 0 0 0 0 0 0 40 0 0 60 0 0 0 0 0 0 0 0 30 No Medium Gravel 159 0 0 0 720 Left 109 3.48 Moderate Flood High Bench None Natural Area Low (<10%) No 10 90 0 0 0 0 0 0 0 40 0 60 0 0 0 0 0 0 0 0 90 0 0 10 0 0 0 0 0 0 No Medium Gravel 80 0 0 0 521 Left 110 -4.70 Low Rocky Shore Railway Rural High (>40%) No 90 10 0 0 85 0 0 0 0 0 15 0 0 0 0 0 0 0 0 0 20 0 0 80 0 0 0 0 80 0 Yes High Cobble 82 0 0 0 291 Left 111 -2.99 Low Flood High Bench Road Infrastructure Medium (10-40%) No 50 50 0 40 0 0 0 0 0 0 0 60 0 0 0 0 0 40 0 0 50 0 0 10 0 0 0 0 0 40 No Medium Gravel 0 0 0 0 310 Left 112 3.66 High Flood High Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 203 0 0 888 Left 113 2.08 Low Flood High Bench None Natural Area Medium (10-40%) No 40 60 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 60 0 0 40 0 0 0 0 0 0 No Medium Gravel 201 0 0 0 466 Left 114 -5.90 Low Gravel Road Infrastructure High (>40%) No 100 0 0 0 100 0 0 0 0 0 0 0 0 0 0 0 0 40 0 0 0 0 0 60 0 0 1 45 0 40 No Medium Gravel 0 0 0 0 186 Left 115 1.97 Low Gravel None Natural Area Medium (10-40%) No 40 60 5 40 55 0 0 0 0 0 0 0 0 0 0 0 0 40 0 0 60 0 0 0 0 0 1 15 0 40 No Medium Gravel 54 61 0 0 634 Left 116 3.88 High Flood High Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 40 0 60 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 69 0 0 0 445 Left 117 2.95 Moderate Flood High Bench None Natural Area Medium (10-40%) No 30 70 0 10 30 0 0 0 0 0 0 60 0 0 0 0 0 30 0 0 70 0 0 0 0 0 0 0 0 30 No Medium Gravel 0 99 0 0 783 Left 118 3.64 High Flood High Bench None Natural Area Low (<10%) No 2 98 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 2 0 0 98 0 0 0 0 0 0 0 0 0 No Medium Gravel 81 242 50 0 1862 Left 119 -3.25 Low Rocky Shore Railway Rural Medium (10-40%) No 40 60 35 25 15 0 0 0 0 25 0 0 0 0 0 0 0 0 0 0 75 0 0 25 0 0 0 0 0 30 Yes Medium Gravel 0 343 0 0 488 Left 120 3.84 High Flood High Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 152 0 0 0 375 Left 121 -2.37 Low Gravel Railway Natural Area Medium (10-40%) No 40 60 25 30 35 0 0 0 10 0 0 0 0 0 0 0 0 25 0 0 50 0 0 25 0 0 0 0 0 40 Yes Medium Gravel 0 102 0 0 850 Left 122 3.01 Moderate Flood High Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 90 0 168 0 831 Left 123 -2.04 Low Rocky Shore None Rural High (>40%) No 100 0 0 0 100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 100 0 0 1 75 0 0 No Low Cobble 31 40 0 0 154 Left 124 3.84 High Flood High Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 83 0 0 773 Left 125 4.16 Very High Cliff/Bluff None Natural Area Low (<10%) No 20 80 0 0 100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 80 0 0 20 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 415 Left 126 4.06 Very High Flood High Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 40 0 60 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Low Gravel 0 44 0 0 262 Left 127 4.83 Very High Rocky Shore None Natural Area None No 0 100 0 100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Cobble 0 0 0 0 324 Left 128 -2.83 Low Rocky Shore Road Natural Area Medium (10-40%) No 40 60 0 40 50 0 0 0 0 10 0 0 0 0 0 0 0 20 0 0 60 0 10 10 0 0 0 0 0 30 No Medium Cobble 0 80 0 0 524 Left 129 4.00 High Rocky Shore None Natural Area None No 0 100 0 100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Cobble 0 0 0 0 390 Left 130 3.79 High Flood High Bench None Natural Area None No 0 100 0 20 0 0 0 0 0 20 0 60 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 68 0 0 489 Left 131 3.90 High Rocky Shore None Natural Area None No 0 100 0 70 30 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Cobble 0 44 0 0 689 Left 132 -3.70 Low Flood High Bench Road Infrastructure Medium (10-40%) No 60 40 0 40 60 0 0 0 0 0 0 0 0 0 0 0 0 40 0 0 20 0 0 40 0 0 2 15 0 30 Yes Medium Gravel 0 0 0 0 582 Left 133 3.18 Moderate Flood High Bench None Natural Area None No 0 100 0 10 0 0 0 0 0 0 0 90 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 559 0 0 1017 Left 134 2.40 Moderate Flood High Bench None Natural Area Medium (10-40%) No 40 60 0 10 0 0 0 0 0 40 0 50 0 0 0 0 0 10 0 0 90 0 0 0 0 0 0 0 0 10 Yes Medium Gravel 0 0 0 0 619 Left 135 -2.90 Low Flood High Bench Road Infrastructure High (>40%) No 45 55 0 55 10 0 0 0 0 0 0 35 0 0 0 0 0 45 0 0 55 0 0 0 0 0 2 25 0 30 Yes Medium Gravel 0 0 0 0 566 Left 136 3.68 High Flood High Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 Yes Medium Gravel 0 84 0 0 226 Left 137 2.31 Moderate Flood High Bench None Natural Area Medium (10-40%) No 40 60 0 30 0 0 0 0 0 0 0 70 0 0 0 0 0 0 0 0 60 0 0 0 40 0 1 20 0 0 Yes Medium Gravel 0 0 0 0 178 Left 138 4.00 High Flood High Bench None Natural Area None No 0 100 0 30 0 0 0 0 0 0 0 70 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 1433 Left 139 -5.10 Low Rocky Shore Road Infrastructure High (>40%) No 90 10 0 60 20 0 0 0 0 20 0 0 0 0 0 0 0 50 0 0 10 0 0 40 0 0 2 25 0 40 Yes Medium Cobble 0 0 0 0 368 Left 140 4.00 High Flood High Bench None Natural Area None No 0 100 0 30 0 0 0 0 0 0 0 70 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 471 Left 141 -4.60 Low Gravel Road Infrastructure High (>40%) No 90 10 0 10 75 0 0 0 0 0 15 0 0 0 0 0 0 50 0 0 15 0 0 35 0 0 0 0 0 40 Yes Medium Gravel 0 0 0 0 145 Left 142 3.54 Moderate Rocky Shore None Natural Area None No 0 100 0 70 30 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Cobble 0 81 92 0 1023 Left 143 6.83 Very High Confluence None Natural Area None No 0 100 0 20 40 0 0 0 0 40 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No 0 0 0 0 147 Left 144 3.91 High Wetland None Natural Area None No 0 100 0 0 0 0 0 80 0 20 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 63 27 0 0 928 Left 145 -6.46 Low Rocky Shore Railway Rural High (>40%) No 100 0 0 80 20 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 100 0 0 1 70 0 100 Yes High Cobble 0 35 0 0 157 Left 146 4.01 Very High Wetland None Natural Area None No 0 100 0 20 20 0 0 40 0 20 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 317 Left 147 -6.16 Low Rocky Shore Railway Rural High (>40%) No 100 0 0 80 20 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 100 0 0 1 75 0 100 Yes High Cobble 0 0 0 0 145 Left 148 4.00 High Flood High Bench None Natural Area None No 0 100 0 15 15 0 0 5 0 10 10 45 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 86 0 0 0 2617 Left 149 -7.00 Low Rocky Shore Road Infrastructure High (>40%) No 100 0 0 100 0 0 0 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 1 100 0 0 Yes High RipRap 0 0 0 0 299
#102 – 450 Neave Ct. Kelowna, BC V1V 2M2 tel: 250.491.7337 fax: 250.491.7772 web: www.ecoscapeltd.com 18-2715 Appendix B March 2021
erat
Bank Segment AHI_1 AHI_Category_Fin al SHORE_TYPE SHORE_MODI LAND_USE LEV_OF_IMP LIVEST_ACC PCTDISTURB PCTNATURAL CLIFF_BLUF ROCKY GRAVEL SAND CONFLUENCE WETLAND OTHER FLOOD_LOW_ FLOOD_MID_ FLOOD_HIGH AGRICULTUR COMMERCIAL CONSERVATI FORESTRY INDUSTRIAL INFRASTRUC INSTITUTIO MULTI_FAMI NATURAL_AR PARK RECREATION RURAL SINGLE_FAM URBAN_PARK RETAIN_WAL PERRETAIN_ PERRAIL_MO PERROAD_MO SUB_MODIFI BKSTBILI BANK_MAT Erosion_Low Erosion_Mod e Erosion_High Erosion_Extreme Shape_Length
Left 150 3.62 High Flood High Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 20 20 60 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 29 84 178 0 2492 Left 151 -5.21 Low Flood High Bench Road Recreation High (>40%) No 100 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 30 0 50 20 0 0 1 10 0 30 Yes Medium Gravel 8 0 0 0 421 Left 152 4.02 Very High Flood High Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 6761 Left 153 4.00 High Wetland None Natural Area None No 0 100 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 157 Left 154 4.00 High Flood High Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 573 Left 155 4.00 High Wetland None Natural Area None No 0 100 0 0 0 0 0 70 0 3 0 30 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 306 Left 156 4.00 High Flood High Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 3384 Right 1 0.29 Low Flood High Bench Dyke Single Family High (>40%) No 95 5 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 0 20 0 15 65 0 0 0 0 Yes High Dyke 0 100 0 0 1553 Right 2 2.98 Moderate Flood Mid Bench None Natural Area Low (<10%) No 20 80 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No High Gravel 0 32 0 0 215 Right 3 2.20 Low Flood Mid Bench None Single Family Medium (10-40%) No 40 60 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 0 0 0 0 100 0 1 15 0 20 Yes Medium Gravel 0 104 0 0 521 Right 4 -0.39 Low Flood Mid Bench Log Yard Industrial High (>40%) No 95 5 0 0 0 0 0 0 0 0 100 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 1 15 0 20 Yes High Gravel 0 289 0 0 594 Right 5 2.80 Moderate Flood Mid Bench Log Yard Natural Area Medium (10-40%) No 20 80 0 0 0 0 0 0 0 0 100 0 0 0 0 0 20 0 0 0 80 0 0 0 0 0 1 20 0 0 Yes Medium Gravel 0 90 0 0 489 Right 6 2.75 Moderate Flood Mid Bench None Natural Area Medium (10-40%) No 40 60 0 0 0 0 0 0 0 0 100 0 0 0 0 0 15 0 0 0 85 0 0 0 0 0 0 0 0 0 No High Gravel 0 0 0 0 193 Right 7 -6.62 Low Other Road Infrastructure High (>40%) No 100 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 1 90 0 100 Yes High Concrete 0 0 0 0 58 Right 8 -4.73 Low Flood Mid Bench Road Single Family High (>40%) No 95 5 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 5 0 0 0 95 0 1 20 0 25 Yes High Gravel 0 0 0 0 177 Right 9 -1.36 Low Flood Mid Bench Other Industrial High (>40%) No 95 5 0 0 0 0 0 0 0 0 100 0 0 0 0 0 40 0 0 0 0 0 0 0 60 0 0 0 0 10 No High Gravel 0 0 0 0 232 Right 10 -3.50 Low Flood Mid Bench Other Industrial High (>40%) No 100 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 1 100 0 0 Yes High RipRap 0 0 0 0 104 Right 11 3.19 Moderate Flood Mid Bench None Rural Medium (10-40%) No 30 70 0 0 0 0 0 0 0 20 80 0 0 0 0 0 0 0 0 0 80 0 0 20 0 0 0 0 0 0 No High Gravel 0 0 0 0 282 Right 12 -3.13 Low Flood Mid Bench Other Rural High (>40%) No 100 0 0 0 0 0 0 0 0 0 100 0 10 0 0 0 0 0 0 0 0 0 0 90 0 0 1 40 0 0 Yes Low RipRap 0 44 0 0 172 Right 13 3.75 High Flood Low Bench None Rural Low (<10%) No 25 75 0 0 0 0 0 0 0 70 30 0 0 0 0 0 0 0 0 0 90 0 0 10 0 0 0 0 0 0 No Medium Gravel 0 21 0 0 192 Right 14 -0.36 Low Flood Mid Bench None Rural High (>40%) No 98 2 0 0 0 0 0 0 0 0 100 0 10 0 0 0 0 0 0 0 0 0 0 90 0 0 1 40 0 0 Yes Medium Gravel 0 0 0 0 294 Right 15 3.80 High Flood Mid Bench None Natural Area Low (<10%) No 5 95 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 90 0 0 10 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 494 Right 16 -5.20 Low Flood High Bench Road Rural High (>40%) No 95 5 0 0 0 0 0 0 0 0 20 80 0 0 0 0 0 75 0 0 5 0 0 20 0 0 1 20 0 0 Yes Medium Gravel 0 0 0 0 200 Right 17 2.68 Moderate Flood Mid Bench None Rural Medium (10-40%) No 25 75 0 0 0 0 0 0 0 30 70 0 0 0 0 0 0 0 0 0 50 0 0 50 0 0 0 0 0 0 No Low Gravel 213 0 0 0 501 Right 18 -0.20 Low Flood Mid Bench None Rural High (>40%) No 95 5 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 5 0 0 95 0 0 3 20 0 0 Yes Medium Gravel 0 0 0 0 1397 Right 19 3.99 High Flood Mid Bench None Natural Area None No 0 100 20 0 0 0 0 0 0 50 30 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 199 0 0 522 Right 20 -2.83 Low Cliff/Bluff None Natural Area None No 0 100 100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Low Fines 0 0 0 181 181 Right 21 3.74 High Flood Mid Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 25 70 5 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 161 165 0 0 1087 Right 22 -3.27 Low Cliff/Bluff None Natural Area None No 2 98 90 0 0 0 0 0 0 10 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Low Fines 0 0 0 108 108 Right 23 2.90 Moderate Flood Low Bench None Natural Area None No 2 98 0 0 0 0 0 0 0 70 30 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 97 709 Right 24 2.87 Moderate Flood Low Bench None Rural Low (<10%) No 20 80 0 0 0 0 0 0 0 60 40 0 0 0 0 0 0 0 0 0 70 0 0 30 0 0 0 0 0 0 No Medium Gravel 141 61 0 0 567 Right 25 -6.12 Low Rocky Shore Railway Rural High (>40%) No 98 2 0 95 0 0 0 0 0 5 0 0 0 0 0 0 0 0 0 0 25 0 0 75 0 0 1 60 100 0 Yes High RipRap 0 0 0 0 313 Right 26 2.94 Moderate Flood Low Bench None Rural Medium (10-40%) No 25 75 0 0 0 0 0 0 0 60 30 10 0 0 0 0 0 0 0 0 60 0 0 40 0 0 0 0 0 0 No Medium Gravel 61 0 0 0 775 Right 27 -0.22 Low Flood High Bench None Rural High (>40%) No 98 2 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 No Low Gravel 141 35 0 0 433 Right 28 4.13 Very High Flood Mid Bench None Rural Medium (10-40%) No 40 60 0 0 0 0 0 0 0 25 75 0 0 0 0 0 0 0 0 0 25 0 0 75 0 0 0 0 10 0 No Low Gravel 378 186 0 0 1161 Right 29 2.93 Moderate Flood Low Bench None Rural Medium (10-40%) No 20 80 0 0 0 0 0 0 0 60 40 0 0 0 0 0 0 0 0 0 60 0 0 40 0 0 0 0 0 0 No Medium Gravel 30 81 0 0 544 Right 30 -4.65 Low Flood Mid Bench Railway Rural High (>40%) No 70 30 0 0 0 0 0 0 0 0 100 0 25 0 0 0 0 0 0 0 25 0 0 50 0 0 1 5 40 0 Yes Low Gravel 185 0 267 0 1012 Right 31 3.10 Moderate Flood Low Bench None Rural Medium (10-40%) No 25 75 0 0 0 0 0 0 0 60 40 0 10 0 0 0 0 0 0 0 60 0 0 30 0 0 0 0 0 5 No Medium Gravel 0 81 0 0 1218 Right 32 -4.54 Low Flood Mid Bench Railway Rural High (>40%) No 90 10 0 0 0 0 0 0 0 30 70 0 0 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 80 0 No Medium Gravel 0 0 0 0 155 Right 33 3.80 High Flood Low Bench None Natural Area None No 5 95 0 0 0 0 0 0 0 60 40 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 509 Right 34 -4.52 Low Flood Mid Bench Railway Rural Medium (10-40%) No 90 10 0 0 0 0 0 0 0 10 60 30 0 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 95 0 Yes Medium Gravel 0 0 0 0 190 Right 35 3.41 Moderate Flood Mid Bench None Rural Medium (10-40%) No 30 70 0 0 0 0 0 0 0 50 50 0 30 0 0 0 0 0 0 0 50 0 0 20 0 0 0 0 0 0 No Medium Gravel 159 238 0 0 1455 Right 36 -4.75 Low Flood Mid Bench Railway Rural High (>40%) No 100 0 0 0 0 0 0 0 0 0 100 0 20 0 0 0 0 0 0 0 0 0 0 80 0 0 1 20 95 0 Yes Low Gravel 111 0 0 0 212 Right 37 3.70 High Flood Mid Bench None Rural Medium (10-40%) No 30 70 0 0 0 0 0 0 0 25 75 0 0 0 0 0 0 0 0 0 40 0 0 60 0 0 0 0 0 0 No Low Gravel 0 641 0 0 1273 Right 38 2.61 Moderate Flood Mid Bench None Rural Medium (10-40%) No 30 70 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 No Medium Gravel 71 0 0 0 277 Right 39 3.69 High Flood Low Bench None Natural Area Low (<10%) No 5 95 0 0 0 0 0 0 0 75 25 0 0 0 0 0 0 0 0 0 80 0 0 20 0 0 0 0 0 0 No Medium Gravel 103 131 0 0 1147 Right 40 -0.98 Low Flood Mid Bench Other Agriculture High (>40%) No 100 0 0 0 0 0 0 0 0 0 100 0 100 0 0 0 0 0 0 0 0 0 0 0 0 0 1 20 0 0 Yes Low Gravel 0 0 0 0 387 Right 41 3.95 High Flood Low Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 80 20 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 108 0 0 0 377 Right 42 -0.12 Low Flood Mid Bench Other Agriculture High (>40%) No 90 10 0 0 0 0 0 0 0 0 100 0 100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 No High Gravel 0 0 0 0 102 Right 43 2.99 Moderate Flood Low Bench None Natural Area Low (<10%) No 10 90 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 0 62 0 178 Right 44 -2.65 Low Flood Mid Bench Other Agriculture High (>40%) No 100 0 0 0 0 0 0 0 0 0 100 0 100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 101 81 0 250 Right 45 4.35 Very High Flood Mid Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No High Gravel 0 0 0 0 207 Right 46 1.98 Low Flood Mid Bench Other Agriculture Medium (10-40%) No 40 60 0 0 0 0 0 0 0 10 90 0 100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 No High Gravel 0 0 0 0 231 Right 47 4.38 Very High Flood Mid Bench None Natural Area Low (<10%) No 10 90 0 0 0 0 0 0 0 40 60 0 0 0 0 0 0 0 0 0 80 0 0 20 0 0 0 0 0 0 No High Gravel 0 0 0 0 259 Right 48 -1.67 Low Flood Mid Bench Railway Agriculture Medium (10-40%) No 40 60 0 0 0 0 0 0 0 20 80 0 60 0 0 0 0 0 0 0 0 0 0 40 0 0 0 0 0 0 No High Gravel 0 0 0 0 391 Right 49 4.35 Very High Flood Low Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No High Gravel 0 0 0 0 217 Right 50 -3.36 Low Flood Mid Bench Railway Agriculture High (>40%) No 90 10 0 0 0 0 0 0 0 0 100 0 50 0 0 0 0 0 0 0 0 0 0 50 0 0 0 0 0 0 Yes High Gravel 0 0 0 0 315 Right 51 5.19 Very High Flood Mid Bench None Natural Area Low (<10%) No 5 95 0 0 0 0 0 0 0 10 90 0 0 0 0 0 0 0 0 0 90 0 0 10 0 0 0 0 0 0 No Medium Gravel 0 111 0 0 394 Right 52 4.86 Very High Flood Mid Bench None Rural Low (<10%) No 10 90 0 0 0 0 0 0 0 0 100 0 20 0 0 0 0 0 0 0 50 0 0 30 0 0 0 0 5 0 No High Gravel 0 0 0 0 436 Right 53 3.10 Moderate Flood Mid Bench None Rural Medium (10-40%) No 40 60 0 0 0 0 0 0 0 0 100 0 30 0 0 0 0 0 0 0 20 0 0 50 0 0 1 10 0 0 Yes Low Gravel 40 178 0 0 506 Right 54 4.62 Very High Flood Low Bench None Natural Area Low (<10%) No 5 95 0 0 0 0 0 0 0 80 20 0 0 0 0 0 0 0 0 0 80 0 0 20 0 0 0 0 0 0 No High Gravel 0 0 0 0 271 Right 55 -2.94 Low Flood Mid Bench Other Agriculture High (>40%) No 100 0 0 0 0 0 0 0 0 0 0 0 80 0 0 0 0 0 0 0 0 0 0 20 0 0 2 60 0 0 Yes Medium RipRap 0 0 0 0 271 Right 56 3.81 High Flood Mid Bench None Rural Low (<10%) No 10 90 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 80 0 0 20 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 206 Right 57 -0.87 Low Flood High Bench None Rural High (>40%) No 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 211 0 0 328 Right 58 6.37 Very High Flood Low Bench None Rural Low (<10%) No 10 90 0 0 0 0 0 0 0 70 30 0 0 0 0 0 0 0 0 0 20 0 0 80 0 0 0 0 0 0 No High Fines 0 0 0 0 194 Right 59 2.39 Moderate Flood Low Bench None Rural Medium (10-40%) No 40 60 0 0 0 0 0 0 0 70 30 0 0 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 No Low Fines 0 132 0 0 132 Right 60 2.71 Moderate Gravel None Natural Area Low (<10%) No 10 90 0 0 100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 80 0 0 20 0 0 0 0 0 0 No Medium Gravel 100 206 43 0 552 Right 61 2.81 Moderate Flood Mid Bench None Natural Area Low (<10%) No 5 95 0 0 0 0 0 0 0 0 70 30 0 0 0 0 0 0 0 0 80 0 0 20 0 0 0 0 0 0 No Medium Gravel 0 317 57 0 737 Right 62 2.28 Moderate Gravel None Natural Area Medium (10-40%) No 20 80 0 0 80 0 0 0 0 0 20 0 0 0 0 0 0 20 0 0 80 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 98 0 0 159 Right 63 3.60 Moderate Flood Mid Bench None Natural Area Low (<10%) No 5 95 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 173 0 0 0 645 Right 64 1.47 Low Gravel None Natural Area Low (<10%) No 5 95 0 0 40 0 0 0 0 0 40 20 0 0 0 0 0 0 0 0 80 0 0 20 0 0 0 0 0 0 No Low Gravel 0 0 199 0 340 Right 65 3.87 High Flood Mid Bench None Natural Area None No 0 100 0 0 10 0 0 0 0 10 60 25 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 224 0 0 1381 Right 66 4.16 Very High Flood Low Bench None Natural Area Low (<10%) No 5 95 0 0 0 0 0 0 0 60 40 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No High Gravel 0 0 0 0 435 Right 67 4.40 Very High Flood Mid Bench None Rural Low (<10%) No 10 90 0 0 0 0 0 0 0 0 100 0 30 0 0 0 0 0 0 0 60 0 0 10 0 0 0 0 0 0 No Medium Gravel 216 0 0 0 504 Right 68 4.24 Very High Flood Mid Bench None Natural Area Low (<10%) No 2 98 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 95 0 0 5 0 0 0 0 0 0 No Medium Gravel 75 0 0 0 171 Right 69 0.72 Low Flood Mid Bench None Agriculture High (>40%) No 70 30 0 0 0 0 0 0 0 0 80 20 90 0 0 0 0 0 0 0 10 0 0 0 0 0 0 0 0 0 Yes Medium Gravel 143 0 0 0 143
#102 – 450 Neave Ct. Kelowna, BC V1V 2M2 tel: 250.491.7337 fax: 250.491.7772 web: www.ecoscapeltd.com 18-2715 Appendix B March 2021
erat
Bank Segment AHI_1 AHI_Category_Fin al SHORE_TYPE SHORE_MODI LAND_USE LEV_OF_IMP LIVEST_ACC PCTDISTURB PCTNATURAL CLIFF_BLUF ROCKY GRAVEL SAND CONFLUENCE WETLAND OTHER FLOOD_LOW_ FLOOD_MID_ FLOOD_HIGH AGRICULTUR COMMERCIAL CONSERVATI FORESTRY INDUSTRIAL INFRASTRUC INSTITUTIO MULTI_FAMI NATURAL_AR PARK RECREATION RURAL SINGLE_FAM URBAN_PARK RETAIN_WAL PERRETAIN_ PERRAIL_MO PERROAD_MO SUB_MODIFI BKSTBILI BANK_MAT Erosion_Low Erosion_Mod e Erosion_High Erosion_Extreme Shape_Length
Right 70 3.82 High Flood Mid Bench None Rural Low (<10%) No 10 90 0 0 0 0 0 0 0 0 70 30 10 0 0 0 0 0 0 0 60 0 0 30 0 0 1 5 0 0 Yes Low Gravel 240 343 0 0 1737 Right 71 3.74 High Flood Mid Bench None Rural Medium (10-40%) No 40 60 0 0 0 0 0 0 0 0 100 0 20 0 0 0 0 0 0 0 40 0 0 40 0 0 0 0 0 0 No High Gravel 0 0 0 0 204 Right 72 1.64 Low Flood Mid Bench None Rural High (>40%) No 100 0 0 0 0 0 0 0 0 0 100 0 30 0 0 0 0 0 0 0 0 0 0 70 0 0 0 0 0 0 Yes Medium Gravel 60 0 0 0 277 Right 73 0.47 Low Gravel None Rural Medium (10-40%) No 80 20 0 0 50 0 0 0 0 0 0 50 0 0 0 0 0 0 0 0 50 0 0 50 0 0 0 0 80 0 No Medium Gravel 90 0 0 0 203 Right 74 3.82 High Flood High Bench None Natural Area Low (<10%) No 2 98 0 0 50 0 0 0 0 10 30 60 0 0 0 0 0 0 0 0 90 0 0 10 0 0 0 0 0 0 No Medium Gravel 11 107 0 0 1305 Right 75 -4.50 Low Flood High Bench None Rural High (>40%) No 100 0 0 0 0 0 0 0 0 0 30 70 30 0 0 0 0 0 0 0 0 0 0 70 0 0 0 0 0 0 No Low Gravel 0 0 220 0 220 Right 76 -0.23 Low Flood Low Bench None Natural Area None No 0 1 0 0 0 0 0 0 0 60 40 0 0 0 0 0 0 0 0 0 10 0 0 0 0 0 0 0 0 0 No High Gravel 0 48 0 0 266 Right 77 -1.50 Low Flood Mid Bench None Rural High (>40%) No 100 0 0 0 0 0 0 0 0 0 100 0 40 0 0 0 0 0 0 0 0 0 0 60 0 0 0 0 0 0 No Low Gravel 0 145 0 0 145 Right 78 2.96 Moderate Flood Low Bench None Natural Area Low (<10%) No 5 95 0 0 0 0 0 0 0 60 40 0 0 0 0 0 0 0 0 0 80 0 0 20 0 0 1 18 0 0 No Medium Gravel 0 121 0 0 381 Right 79 3.64 High Flood High Bench None Rural Low (<10%) No 5 95 0 0 0 0 0 0 0 0 40 60 0 0 0 0 0 0 0 0 80 0 0 20 0 0 0 0 0 0 No Medium Gravel 0 41 0 0 383 Right 80 2.60 Moderate Flood Mid Bench None Rural Medium (10-40%) No 35 65 0 0 0 0 0 0 0 0 60 40 0 0 0 0 0 0 0 0 25 0 0 75 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 513 Right 81 -2.53 Low Rocky Shore Railway Rural Medium (10-40%) No 35 65 30 60 0 0 0 0 0 0 10 0 0 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 No High Boulder 40 0 0 0 158 Right 82 3.36 Moderate Flood Mid Bench None Rural Medium (10-40%) No 30 70 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 208 Right 83 2.80 Moderate Flood Mid Bench None Agriculture Medium (10-40%) No 40 70 0 0 0 0 0 0 0 0 60 40 40 0 0 0 0 0 0 0 0 0 0 60 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 248 Right 84 0.44 Low Flood Mid Bench None Agriculture High (>40%) No 100 0 0 0 0 0 0 0 0 0 75 25 100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 No Low Gravel 86 0 0 0 86 Right 85 3.44 Moderate Flood Mid Bench None Agriculture Medium (10-40%) No 40 60 0 0 0 0 0 0 0 25 75 0 70 0 0 0 0 0 0 0 10 0 0 20 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 294 Right 86 0.88 Low Flood Mid Bench None Agriculture High (>40%) No 100 0 0 0 0 0 0 0 0 0 80 20 95 0 0 0 0 0 0 0 0 0 0 5 0 0 2 16 0 0 Yes Low Gravel 203 0 0 0 672 Right 87 4.30 Very High Flood Mid Bench None Rural Low (<10%) No 9 91 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 75 0 0 25 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 225 Right 88 0.09 Low Flood High Bench None Rural High (>40%) No 85 15 0 0 0 0 0 0 0 0 25 75 25 0 0 0 20 0 0 0 0 0 25 30 0 0 1 41 0 0 Yes Medium Gravel 0 0 0 0 243 Right 89 3.69 High Flood High Bench None Natural Area Low (<10%) No 5 95 0 0 0 0 0 0 0 0 45 55 0 0 0 0 0 0 0 0 80 20 20 0 0 0 0 0 0 0 No Medium Gravel 105 0 0 0 685 Right 90 -4.96 Low Flood High Bench Road Rural High (>40%) No 90 10 0 0 0 0 0 0 0 10 10 80 0 0 0 0 0 75 0 0 0 0 0 25 0 0 1 18 0 0 Yes High Gravel 0 0 0 0 569 Right 91 3.60 High Flood Mid Bench None Rural Low (<10%) No 10 90 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 75 0 0 25 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 301 Right 92 -5.81 Low Flood Mid Bench Road Infrastructure High (>40%) No 100 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 75 0 0 0 0 0 25 0 0 2 16 0 75 Yes Medium Gravel 0 186 0 0 568 Right 93 2.40 Moderate Flood High Bench None Recreation Medium (10-40%) No 40 60 0 0 0 0 0 0 0 0 25 75 0 0 0 0 0 0 0 0 20 0 60 20 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 328 Right 94 3.93 High Flood Mid Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 22 0 0 499 Right 95 2.25 Moderate Flood High Bench None Recreation Medium (10-40%) No 40 60 0 0 0 0 0 0 0 0 40 60 0 0 0 0 0 0 0 0 20 0 80 0 0 0 0 0 0 0 No Medium Gravel 20 40 0 0 513 Right 96 -5.76 Low Flood Mid Bench Road Infrastructure High (>40%) No 100 0 0 0 0 0 0 0 0 0 50 50 0 0 0 0 0 80 0 0 0 0 0 20 0 0 1 38 0 0 Yes High RipRap 0 0 0 0 157 Right 97 4.00 High Flood Mid Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 245 Right 98 -3.89 Low Flood Mid Bench Railway Rural Medium (10-40%) No 40 60 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 20 0 0 30 0 0 50 0 0 1 50 30 10 Yes High RipRap 0 82 0 0 363 Right 99 4.00 Very High Flood Mid Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 0 75 25 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 880 Right 100 1.64 Low Flood High Bench None Rural High (>40%) No 70 30 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 30 0 0 70 0 0 0 0 0 0 No Medium Cobble 0 0 0 0 194 Right 101 -5.00 Low Flood High Bench Road Infrastructure High (>40%) No 100 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 50 0 0 0 0 0 50 0 0 0 0 0 50 Yes Medium Cobble 0 0 0 0 61 Right 102 3.80 High Flood High Bench None Natural Area Low (<10%) No 5 95 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 95 0 0 5 0 0 0 0 0 0 No High Cobble 0 0 0 0 422 Right 103 -1.88 Low Rocky Shore Railway Natural Area Low (<10%) No 10 90 25 75 0 0 0 0 0 0 0 0 0 0 0 0 0 25 0 0 60 0 0 15 0 0 0 0 0 0 No High Boulder 0 40 125 0 1154 Right 104 3.79 High Flood High Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 5 15 80 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Cobble 0 0 20 0 425 Right 105 3.87 High Rocky Shore None Natural Area Low (<10%) No 2 98 0 100 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 98 0 0 0 0 0 0 0 2 0 No High Cobble 247 0 0 2 2639 Right 106 3.58 Moderate Rocky Shore None Natural Area Low (<10%) No 5 95 0 80 20 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No High Cobble 0 0 0 7 229 Right 107 3.80 High Rocky Shore None Natural Area Low (<10%) No 5 95 0 50 0 0 0 0 0 0 20 30 0 0 0 0 0 5 0 0 95 0 0 0 0 0 0 0 0 0 No High Cobble 0 0 0 0 290 Right 108 -0.48 Low Rocky Shore None Rural High (>40%) No 90 10 0 100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 0 0 90 0 0 1 44 0 0 Yes High RipRap 0 0 0 0 178 Right 109 3.86 High Rocky Shore None Natural Area Low (<10%) No 2 98 0 90 0 0 0 0 0 0 0 10 0 0 0 0 0 2 0 0 98 0 0 0 0 0 0 0 2 0 No Medium Cobble 40 0 0 0 465 Right 110 3.92 High Flood High Bench None Natural Area Low (<10%) No 2 98 0 0 0 0 0 0 0 0 10 90 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No High Cobble 0 0 0 0 275 Right 111 2.50 Moderate Rocky Shore None Forestry Low (<10%) No 10 100 0 100 0 0 0 0 0 0 0 0 0 0 0 40 0 0 0 0 0 0 0 60 0 0 0 0 0 0 No Medium Cobble 0 67 0 0 67 Right 112 3.51 Moderate Flood High Bench None Natural Area Low (<10%) No 10 90 0 30 0 0 0 0 0 0 20 50 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Cobble 80 30 0 0 492 Right 113 0.92 Low Flood High Bench None Rural High (>40%) No 50 50 0 0 30 0 0 0 0 0 20 50 0 0 0 0 0 0 0 0 40 0 0 60 0 0 0 0 0 0 No Medium Gravel 44 92 0 0 158 Right 114 4.00 High Flood Low Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 171 Right 115 2.27 Moderate Gravel None Recreation Medium (10-40%) No 40 60 0 0 50 0 0 0 0 10 20 20 0 0 0 0 0 0 0 0 20 0 60 20 0 0 0 0 5 0 No Medium Gravel 0 60 0 0 688 Right 116 3.80 High Flood High Bench None Natural Area Low (<10%) No 5 95 0 0 0 0 0 0 0 0 40 60 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 5 0 No Medium Gravel 0 0 0 0 259 Right 117 -7.29 Low Rocky Shore Road Infrastructure High (>40%) No 100 0 0 100 0 0 0 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 1 100 0 75 Yes High RipRap 0 42 0 0 219 Right 118 3.41 Moderate Flood High Bench None Natural Area Low (<10%) No 10 90 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 10 0 0 90 0 0 0 0 0 0 0 0 10 No Medium Gravel 83 52 0 0 733 Right 119 -7.00 Low Rocky Shore Road Infrastructure High (>40%) No 100 0 0 100 0 0 0 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 1 100 0 100 Yes High RipRap 0 0 0 0 371 Right 120 3.60 High Flood High Bench None Natural Area Low (<10%) No 10 90 0 0 0 0 0 0 0 0 0 100 0 0 0 0 10 0 0 0 90 0 0 0 0 0 0 0 0 10 No Medium Gravel 0 0 0 0 261 Right 121 -7.67 Low Rocky Shore Road Infrastructure High (>40%) No 100 0 0 100 0 0 0 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 1 100 0 75 Yes High RipRap 95 111 0 0 357 Right 122 3.82 High Flood High Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 55 0 0 464 Right 123 -4.55 Low Other Railway Natural Area High (>40%) No 100 0 0 100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Low Gravel 0 97 0 0 128 Right 124 3.71 High Flood High Bench None Natural Area Low (<10%) No 5 95 0 0 0 0 0 0 0 0 30 70 0 0 0 0 0 0 0 0 90 0 10 0 0 0 0 0 0 0 No Medium Gravel 101 0 0 0 719 Right 125 -7.00 Low Rocky Shore Road Infrastructure High (>40%) No 100 0 0 100 0 0 0 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 1 100 0 100 Yes High RipRap 0 0 0 0 152 Right 126 3.67 High Flood High Bench None Natural Area Low (<10%) No 2 98 0 0 0 0 0 0 0 0 30 70 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 40 316 0 0 2006 Right 127 -5.99 Low Rocky Shore Road Infrastructure High (>40%) No 100 0 0 100 0 0 0 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 1 30 0 100 Yes Low RipRap 0 67 0 0 254 Right 128 2.93 Moderate Flood High Bench None Natural Area Low (<10%) No 5 95 0 0 0 0 0 0 0 0 20 80 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 102 0 66 0 433 Right 129 -7.47 Low Rocky Shore Road Infrastructure High (>40%) No 100 0 0 100 0 0 0 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 1 50 0 100 Yes Low RipRap 0 0 99 0 302 Right 130 3.80 High Flood High Bench None Natural Area Low (<10%) No 5 95 0 0 0 0 0 0 0 0 30 70 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 10 No Medium Gravel 0 0 0 0 216 Right 131 -6.60 Low Rocky Shore Road Infrastructure High (>40%) No 100 0 0 100 0 0 0 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 1 80 0 100 Yes High RipRap 0 0 0 0 190 Right 132 3.84 High Flood Mid Bench None Natural Area None No 0 100 0 0 0 0 0 10 0 10 40 40 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 155 0 0 0 740 Right 133 3.60 High Flood High Bench None Infrastructure Low (<10%) No 10 90 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 10 0 0 90 0 0 0 0 0 0 0 0 0 No High Gravel 0 0 0 0 718 Right 134 -7.00 Low Rocky Shore Road Infrastructure High (>40%) No 100 0 0 100 0 0 0 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 1 100 0 60 Yes High RipRap 0 0 0 0 240 Right 135 4.00 Very High Flood High Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 0 40 60 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No High Cobble 0 0 0 0 186 Right 136 -1.16 Low Other None Natural Area High (>40%) No 100 0 0 0 100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Low Fines 0 109 0 0 109 Right 137 3.29 Moderate Wetland None Natural Area None No 0 100 0 0 0 0 0 80 0 10 10 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 52 0 0 109 Right 138 3.96 High Rocky Shore None Natural Area None No 0 100 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 21 0 0 819 Right 139 3.30 Moderate Flood Low Bench None Natural Area Low (<10%) No 10 90 0 0 20 0 0 0 0 80 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Low Gravel 0 100 0 0 508 Right 140 3.53 Moderate Flood High Bench None Natural Area Low (<10%) No 5 95 0 0 0 0 0 0 0 0 20 80 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 182 0 0 999 Right 141 4.04 Very High Rocky Shore None Natural Area None No 0 100 0 80 0 0 0 0 0 0 0 20 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No High Cobble 0 0 0 0 1065 Right 142 4.00 High Flood High Bench None Natural Area None No 0 100 0 0 0 0 0 25 0 25 20 30 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 442 Right 143 4.00 High Flood High Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 20 20 60 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 801 Right 144 -4.20 Low Flood High Bench Road Recreation High (>40%) No 80 20 0 0 0 0 0 0 0 0 40 80 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 44 Right 145 3.67 High Flood High Bench None Natural Area None No 0 100 0 0 0 0 0 20 0 20 20 40 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 178 0 0 800
#102 – 450 Neave Ct. Kelowna, BC V1V 2M2 tel: 250.491.7337 fax: 250.491.7772 web: www.ecoscapeltd.com 18-2715 Appendix B March 2021
erat
Bank Segment AHI_1 AHI_Category_Fin al SHORE_TYPE SHORE_MODI LAND_USE LEV_OF_IMP LIVEST_ACC PCTDISTURB PCTNATURAL CLIFF_BLUF ROCKY GRAVEL SAND CONFLUENCE WETLAND OTHER FLOOD_LOW_ FLOOD_MID_ FLOOD_HIGH AGRICULTUR COMMERCIAL CONSERVATI FORESTRY INDUSTRIAL INFRASTRUC INSTITUTIO MULTI_FAMI NATURAL_AR PARK RECREATION RURAL SINGLE_FAM URBAN_PARK RETAIN_WAL PERRETAIN_ PERRAIL_MO PERROAD_MO SUB_MODIFI BKSTBILI BANK_MAT Erosion_Low Erosion_Mod e Erosion_High Erosion_Extreme Shape_Length
Right 146 -3.76 Low Flood High Bench Road Recreation High (>40%) No 80 20 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 0 100 0 0 0 1 15 0 40 Yes High Gravel 0 0 0 0 338 Right 147 4.00 High Flood High Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 20 30 50 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 408 Right 148 -7.00 Low Rocky Shore Railway Recreation High (>40%) No 100 0 0 100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 100 0 0 0 1 100 100 0 Yes High RipRap 0 0 0 0 164 Right 149 3.49 Moderate Flood High Bench None Natural Area Low (<10%) No 2 98 0 0 0 0 0 0 0 20 30 50 0 0 0 0 0 0 0 0 100 0 0 0 0 0 1 5 5 0 No Medium Gravel 0 333 0 0 1507 Right 150 -3.80 Low Flood High Bench Railway Recreation High (>40%) No 70 30 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 30 0 70 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 70 Right 151 4.00 High Flood Low Bench None Natural Area None No 0 100 0 0 0 0 0 10 0 50 20 20 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 292 Right 152 4.00 High Flood High Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 0 30 70 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 321 Right 153 4.00 High Flood High Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 0 30 70 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 797 Right 154 -4.00 Low Rocky Shore Other Infrastructure High (>40%) No 100 0 0 100 0 0 0 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 1 100 0 0 Yes High RipRap 0 0 0 0 68 Right 155 4.00 High Flood High Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 1106 Right 156 4.00 High Wetland None Natural Area None No 0 100 0 0 0 0 0 70 0 30 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 196 Right 157 4.00 High Rocky Shore None Natural Area None No 0 100 0 80 20 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 598 Right 158 4.00 High Wetland None Natural Area None No 0 100 0 0 0 0 0 80 0 20 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 682 Right 159 3.62 High Flood High Bench None Natural Area None No 0 100 0 15 15 0 0 5 0 10 10 45 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 657 0 0 2623 Right 160 3.89 High Wetland None Natural Area None No 0 100 0 0 0 0 0 90 0 10 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 39 0 0 526 Right 161 3.89 High Flood High Bench None Natural Area None No 0 100 0 0 0 0 0 30 0 30 0 40 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 30 0 0 420 Right 162 -7.00 Low Rocky Shore Road Infrastructure High (>40%) No 100 0 0 100 0 0 0 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 1 100 0 0 Yes High RipRap 0 0 0 0 320 Right 163 3.39 Moderate Flood High Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 20 20 60 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 83 81 0 809 Right 164 4.00 High Wetland None Natural Area None No 0 100 0 0 0 0 0 80 0 20 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 115 Right 165 3.59 Moderate Flood High Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 30 0 70 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 147 144 0 2060 Right 166 -5.20 Low Flood High Bench Road Recreation High (>40%) No 100 0 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 0 100 0 0 0 1 10 0 80 Yes Medium Gravel 0 0 0 0 155 Right 167 4.00 High Flood High Bench None Natural Area None No 0 100 0 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 2514 Right 168 3.60 High Flood High Bench None Forestry Low (<10%) No 10 90 0 0 0 0 0 20 0 0 0 80 0 0 0 60 0 0 0 0 40 0 0 0 0 0 0 0 0 0 No Medium Gravel 0 0 0 0 676 Right 169 4.00 High Wetland None Natural Area None No 0 100 0 0 0 0 0 60 0 0 0 40 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No High Gravel 0 0 0 0 480 Right 170 4.00 High Flood High Bench None Natural Area None No 0 100 0 0 0 0 0 20 0 0 0 80 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No High Gravel 0 0 0 0 3135 Right 171 4.00 High Flood High Bench None Natural Area None No 0 100 0 0 0 0 0 40 0 0 0 60 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No High Gravel 0 0 0 0 2605 Right 172 3.80 High Flood High Bench None Forestry Low (<10%) No 5 95 0 0 0 0 0 20 0 0 0 80 0 0 0 20 0 0 0 0 80 0 0 0 0 0 0 0 0 0 No High Gravel 0 0 0 0 624 Right 173 4.00 High Confluence None Natural Area None No 0 100 0 0 0 0 50 40 0 0 0 10 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 No High Gravel 0 0 0 0 97 Right 174 4.00 High Flood High Bench None Forestry None No 0 100 0 0 20 0 0 0 0 0 0 90 0 0 0 50 0 0 0 0 50 0 0 0 0 0 0 0 0 0 No High Gravel 0 0 0 0 1034
#102 – 450 Neave Ct. Kelowna, BC V1V 2M2 tel: 250.491.7337 fax: 250.491.7772 web: www.ecoscapeltd.com 18-2715 Appendix C March 2021
APPENDIX C
Centerline and Bank Aquatic Habitat Index Analysis Matrices
#102 – 450 Neave Ct. Kelowna, BC V1V 2M2 tel: 250.491.7337 fax: 250.491.7772 web: www.ecoscapeltd.com 18-2715 Appendix C March 2021
Appendix C1 - habitat unit/sub area : fish life history scoring matrix - Rearing Habitat Type
Species CA CO P LK RF RN G BW BW_d GB FL_b FL_f FL_i FL_ld FL_n FL_md FLG_n FL_hd FLG_md FLG_ld FLG_i FLG_hd FLS_f FLS_i FLS_ld FLS_md FLS_n FM_b FM_hd FM_i FM_n FM_ld M_i M_r M_n RI_hd RM_n SC LWD_1 B_i RI_ld RU_i RU_ld RU_md SB SF WN_hd WN_ld WN_md WN_n SH_i SH_n SH_r Rainbow (Resident) 1 2 3 0 2 2 1 2 1 1 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 0 0 1 1 1 0 0 0 2 2 3 3 0 1 0 0 0 0 0 1 1 1 1 0 0 2
Steelhead 2 2 3 0 2 2 1 1 1 1 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 0 0 1 1 1 0 0 0 2 1 3 3 0 1 0 0 0 0 0 1 1 1 1 0 0 2
Bull Trout 3 3 3 2 3 3 1 1 1 0 0 0 0 0 0 0 2 0 2 2 2 0 1 1 1 1 1 0 0 1 1 1 1 1 1 1 1 3 3 0 1 0 0 0 0 0 0 0 0 0 0 0 0
Chinook 2 2 3 3 2 2 1 3 2 0 1 1 1 1 1 1 3 1 3 3 3 1 2 2 2 2 2 0 0 1 1 1 0 0 0 2 3 1 3 0 1 0 0 0 0 2 2 2 2 2 0 0 2
Coho 1 2 3 0 2 2 1 3 2 0 2 2 2 2 2 2 3 2 3 3 3 2 2 2 2 2 2 0 0 1 1 1 0 0 0 2 3 3 3 0 2 0 0 0 0 2 2 2 2 2 0 0 2
Appendix C2 - habitat unit/sub area : fish life history scoring matrix - General Living Habitat Type
Species Life Stage CA CO P LK RF RN G BW BW_d GB FL_b FL_f FL_i FL_ld FL_n FL_md FLG_n FL_hd FLG_md FLG_ld FLG_i FLG_hd FLS_f FLS_i FLS_ld FLS_md FLS_n M_i M_r M_n RM_n SC LWD_1 RI_hd RI_ld SB SF WN_hd WN_ld WN_md WN_n SH_r Rainbow Juvenile 2 2 3 0 3 3 1 2 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 1 3 3 1 1 0 0 0 1 1 1 2 (Resident) Adult 2 3 3 0 3 3 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 3 3 0 1 0 0 0 0 0 0 2 Juvenile 2 2 3 0 3 3 1 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 3 3 0 1 0 0 0 1 1 1 2 Steelhead Adult 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Juvenile 3 3 3 2 3 2 1 1 1 0 0 0 0 0 0 0 1 0 1 1 1 0 1 1 1 0 1 1 1 1 0 3 3 0 1 0 0 0 0 0 0 0 Bull Trout Adult 3 3 3 3 2 2 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 3 0 1 0 0 0 0 0 0 0 Juvenile 3 2 3 3 3 2 1 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 3 1 1 0 0 1 2 2 2 2 Chinook Adult 0 2 3 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Juvenile 2 2 3 0 3 3 1 3 2 0 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 3 3 1 1 0 0 2 3 3 3 2 Coho Adult 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Appendix C3 - habitat unit/sub area : fish life history scoring matrix - Cover Habitat Type
Species Life Stage CA CO P LK RF RN G BW BW_d GB FL_b FL_f FL_i FL_ld FL_n FL_md FLG_n FL_hd FLG_md FLG_ld FLG_i FLG_hd FLS_f FLS_i FLS_ld FLS_md FLS_n M_i M_r M_n RI_hd RM_n SC LWD_1 B_i RI_ld SB SF WN_hd WN_ld WN_md WN_n SH_i SH_n SH_r
Rainbow Juvenile 2 2 3 0 3 2 1 1 1 0 1 1 1 1 1 1 1 0 1 1 1 0 0 0 0 0 0 0 0 0 2 1 3 3 0 1 0 0 0 0 0 0 0 0 2 (Resident) Adult 2 3 3 0 3 2 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 3 3 0 1 0 0 0 0 0 0 0 0 2
Juvenile 2 2 3 0 3 2 1 1 1 0 1 1 1 1 1 1 1 0 1 1 1 0 0 0 0 0 0 0 0 0 1 1 3 3 0 1 0 0 0 0 0 0 0 0 2 Steelhead Adult 2 2 3 3 3 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 3 0 0 0 0 0 0 0 0 0 0 2
Juvenile 3 3 3 2 3 2 1 0 0 0 0 0 0 0 0 0 1 0 1 1 1 0 0 0 0 0 0 1 1 1 0 0 3 3 0 1 0 0 0 0 0 0 0 0 0 Bull Trout Adult 3 3 3 3 2 2 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 3 0 1 0 0 0 0 0 0 0 0 0
Juvenile 3 2 3 3 3 2 1 1 0 0 1 1 1 1 1 1 3 1 3 3 3 1 1 1 1 1 1 0 0 0 2 1 1 3 0 1 0 0 2 2 2 2 0 0 2 Chinook Adult 2 2 3 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Juvenile 2 2 3 0 3 3 1 2 2 0 1 1 1 1 1 1 2 1 2 2 2 1 1 1 1 1 1 0 0 0 2 1 3 3 0 1 0 0 2 2 2 2 0 0 2 Coho Adult 2 3 3 3 2 3 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 3 3 0 1 0 0 0 0 0 0 0 0 2
#102 – 450 Neave Ct. Kelowna, BC V1V 2M2 tel: 250.491.7337 fax: 250.491.7772 web: www.ecoscapeltd.com 18-2715 Appendix C March 2021
Fisheries relative habitat values (RHV) and weighted scores for aquatic and riparian habitat features. Habitat Type Code Qualifier Wildlife Rating LWD Biodiversity Rating Nutrients hd 0.40 0.30 0.30 0.40 b 0.40 0.70 0.30 0.30 Broadleaf Forest B ld 0.70 0.40 0.70 0.80 n 0.80 1.00 0.80 0.90 0.80 0.00 1.00 0.50 Backwater BW d 0.40 0.70 0.30 0.30 Cliff/Scree/Talus CS 0.10 0.00 0.20 0.10 b 0.30 0.60 0.30 0.30 hd 0.40 0.50 0.30 0.40 p 0.50 0.50 0.30 0.50 Coniferous Forest C pb 0.50 0.50 0.30 0.50 md 0.50 0.60 0.40 0.50 ld 0.60 0.70 0.50 0.60 n 0.70 0.80 0.60 0.60 Cultivated Field CF 0.10 0.00 0.10 0.10 Dry Gulley DG 0.10 0.00 0.10 0.10 hd 0.10 0.00 0.00 0.00 b 0.10 0.00 0.10 0.10 pb 0.30 0.00 0.20 0.10 Grassland GN md 0.50 0.00 0.30 0.10 ld 0.60 0.00 0.40 0.20 n 0.60 0.00 0.40 0.20 b 0.50 0.00 0.50 0.30 hd 0.50 0.00 0.50 0.30 f 0.60 0.00 0.60 0.30 Low Flood Bench FL md 0.60 0.00 0.60 0.30 pb 0.60 0.00 0.60 0.30 ld 0.70 0.00 0.70 0.30 n 0.90 0.00 0.90 0.40 b 0.50 0.00 0.50 0.30 hd 0.50 0.00 0.50 0.30 md 0.50 0.00 0.50 0.30 Low Flood Bench - Graminoid FLG pb 0.50 0.00 0.50 0.30 f 0.70 0.00 0.70 0.30 ld 0.70 0.00 0.70 0.30 n 0.90 0.00 0.90 0.40 b 0.40 0.00 0.30 0.30 hd 0.40 0.00 0.30 0.30 f 0.40 0.00 0.50 0.50 Low Flood Bench - Shrub FLS pb 0.50 0.00 0.60 0.30 md 0.60 0.00 0.60 0.30 ld 0.70 0.00 0.70 0.30 n 0.90 0.00 0.90 0.40 f 0.40 0.40 0.50 0.40 hd 0.40 0.40 0.50 0.40 b 0.40 1.00 0.50 0.40 Mid Flood Bench FM md 0.60 0.80 0.60 0.70 ld 0.80 1.00 0.80 0.90 n 1.00 1.00 1.00 1.00 md 0.60 0.70 0.60 0.40 pb 0.60 0.80 0.70 0.40 Mixed Forest M ld 0.70 0.80 0.80 0.50 n 0.90 1.00 1.00 0.60 b 0.40 0.60 0.20 0.20 c 0.40 0.60 0.20 0.20 hd 0.40 0.50 0.30 0.40 Open Coniferous Woodland CW md 0.50 0.60 0.40 0.50 pb 0.50 0.60 0.40 0.50 ld 0.60 0.70 0.50 0.60
#102 – 450 Neave Ct. Kelowna, BC V1V 2M2 tel: 250.491.7337 fax: 250.491.7772 web: www.ecoscapeltd.com 18-2715 Appendix C March 2021
Habitat Type Code Qualifier Wildlife Rating LWD Biodiversity Rating Nutrients n 0.70 0.80 0.60 0.70 Railway RL 0.00 0.00 0.00 0.00 0.80 0.00 0.80 0.00 d 0.30 0.00 0.40 0.00 hd 0.50 0.00 0.50 0.00 River RI md 0.60 0.00 0.70 0.00 ld 0.60 0.00 1.00 0.00 n 0.60 0.00 1.00 0.00 0.00 0.00 0.00 0.00 Road Surface RZ hd 0.00 0.00 0.00 0.00 b 0.00 0.00 0.00 0.10 hd 0.00 0.00 0.00 0.10 Rural RU md 0.30 0.20 0.20 0.30 pa 0.50 0.00 0.50 0.30 ld 0.40 0.40 0.40 0.40 Seasonally Flooded SF 0.20 0.00 0.20 0.20 hd 0.20 0.00 0.10 0.20 f 0.30 0.00 0.20 0.30 md 0.40 0.00 0.30 0.30 Shrub SH pb 0.40 0.00 0.30 0.30 n 0.40 0.00 0.50 0.30 ld 0.50 0.00 0.40 0.50 Silt Bluff/Exposed Bank SB 0.20 0.00 0.20 0.10 Side Channel SC 0.50 0.00 0.60 0.30 f 0.30 0.00 0.30 0.10 hd 0.40 0.00 0.30 0.10 Shrub-Steppe SS md 0.60 0.00 0.50 0.10 ld 0.70 0.00 0.60 0.10 n 0.80 0.00 0.70 0.10 0.00 0.00 0.00 0.10 Urban UR pa 0.00 0.00 0.00 0.00 1.00 0.00 1.00 0.40 b 0.60 0.00 0.50 0.10 Wetland WN hd 0.60 0.00 0.50 0.10 ld 0.80 0.00 0.80 0.40 md 0.80 0.00 1.00 0.60 n 1.00 0.00 1.00 0.40
#102 – 450 Neave Ct. Kelowna, BC V1V 2M2 tel: 250.491.7337 fax: 250.491.7772 web: www.ecoscapeltd.com 18-2715 Appendix C March 2021
Left Bank AHI score distribution
Right Bank AHI score distribution
Centerline AHI score distribution
#102 – 450 Neave Ct. Kelowna, BC V1V 2M2 tel: 250.491.7337 fax: 250.491.7772 web: www.ecoscapeltd.com 18-2715 Appendix D March 2021
APPENDIX D
Data Dictionary for Large River Inventory and Mapping – Version 6
#102 – 450 Neave Ct. Kelowna, BC V1V 2M2 tel: 250.491.7337 fax: 250.491.7772 web: www.ecoscapeltd.com