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2013 Fish and Fish Habitat Survey Results Slater River Project EL494 Tulita District, Sahtu Region, Northwest Territories

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2013 Fish and Fish Habitat Survey Results Slater River Project EL494 Tulita District, Sahtu Region, Northwest Territories Prepared for HUSKY OIL OPERATIONS LIMITED 707 – 8th Avenue SW Box 6525, Station D Calgary, Alberta T2P 3G7 2013 Fish and Fish Habitat Survey Results Slater River Project EL494 Tulita District, Sahtu Region, Northwest Territories Submitted to: Sahtu Land and Water Board File 25500832 ǀ February 2014 Northern EnviroSearch (Tulita) Ltd. A partnership between MWH Canada, Inc. & Tulita Water Services Ltd. 600 -6 Avenue S.W., Suite 1010 Calgary, Alberta T2P OS5 TEL 403 543 5353 I FAX 403 233 2513 HUSKY OIL OPERATIONS LIMITED | 2013 HYDROLOGICAL & SURFACE WATER EVALUATION SLATER RIVER PROJECT, TULITA DISTRICT, SAHTU REGION, NORTHWEST TERRITORIES Table of Contents List of Figures ................................................................................................................ 3 List of Tables .................................................................................................................. 3 1 Introduction ............................................................................................................ 1 1.1 Project Description ..............................................................................................................1 1.2 Objectives ...........................................................................................................................1 1.3 Approach ............................................................................................................................1 1.4 Study Area ..........................................................................................................................1 2 Methods .................................................................................................................... 2 2.1 Fisheries Information Review ..............................................................................................2 2.2 Sample Locations ................................................................................................................4 2.3 Field Survey Methods ..........................................................................................................4 3 Results ....................................................................................................................... 6 3.1 Fish Inventory .....................................................................................................................6 3.2 Fish Habitat ....................................................................................................................... 13 4 Discussion .............................................................................................................. 28 4.1 Arctic Grayling ................................................................................................................... 29 4.2 Finescale Dace ................................................................................................................... 30 4.3 Lake Chub ......................................................................................................................... 30 4.4 Northern Pike.................................................................................................................... 31 4.5 Slimy Sculpin ..................................................................................................................... 32 4.6 Recommendations ............................................................................................................ 32 4.7 Future Studies ................................................................................................................... 33 5 Conclusion .............................................................................................................. 34 6 References ............................................................................................................. 35 HUSKY OIL OPERATIONS LIMITED | 2013 HYDROLOGICAL & SURFACE WATER EVALUATION SLATER RIVER PROJECT, TULITA DISTRICT, SAHTU REGION, NORTHWEST TERRITORIES List of Figures FIGURE 1. SURVEY LOCATIONS AND DRAINAGE BASINS WITHIN THE LSA. ......................................................... 3 List of Tables TABLE 2-1. SPECIES CAPTURED WITHIN DEH CHO AND SAHTU REGIONS .......................................................... 2 TABLE 2-2. LOCATIONS OF THE 2013 STUDY SITES ...................................................................................... 4 TABLE 2-3. MODIFIED WENTWORTH SCALE CLASSIFICATION OF SUBSTRATE TYPES BY PARTICLE SIZE. ..................... 5 TABLE 2-4. CLASSIFICATION OF COVER TYPES. ............................................................................................ 6 TABLE 3-1. FISH SPECIES CAPTURED. ........................................................................................................ 6 TABLE 3-2. SUMMARY OF FISH INVENTORY DATA BY SURVEY LOCATION. .......................................................... 7 TABLE 3-3. INDIVIDUALS CAPTURED. ........................................................................................................ 8 TABLE 3-4. WATER QUALITY PROFILES OF 2013 STUDY LOCATIONS. ............................................................. 13 TABLE 3-5. HABITAT CHARACTERISTICS OF 2013 STUDY LOCATIONS. ............................................................ 14 TABLE 3-6. BATHYMETRIC SURVEY OF APPROVED WATER SOURCES, 2011. .................................................. 22 HUSKY OIL OPERATIONS LIMITED | 2013 FISH AND FISH HABITAT ASSESSMENT SLATER RIVER PROJECT, TULITA DISTRICT, SAHTU REGION, NORTHWEST TERRITORIES 1 Introduction Husky Oil Operations Limited (Husky) is carrying out a baseline environmental study to support its Slater River Project (the Project) in the Tulita District of the Sahtu Region of the Northwest Territories (NWT). This baseline information includes the study of fish populations and habitat utilizations within the exploration block EL494. Data obtained from this assessment will be used to not only support the Project but also to aid in planning future components of the project to minimize impacts to fish populations and habitat. 1.1 Project Description This report contains a summary of the initial year of baseline fisheries information collected in Husky Exploration Lease EL494. The ultimate goal of the study is to provide baseline data on fish and fish habitat within the exploration leases to describe and assess the use and distribution of fish and also to facilitate species-specific impact analysis and land use planning. In September of 2013, MWH undertook the initial survey of watercourses and waterbodies that have been impacted. The study was designed to define and inventory habitat types and from this data provide details on the utilization of those habitats by the various fish species found within the Local Study Area (LSA). In the initial year of study, sample areas were focused on the streams, creeks and rivers crossed by the all-weather road, previously constructed winter road and the lakes and waterbodies utilized as water sources for the 2012-2013 drilling programs. Continuation of the baseline in 2014 will expand the 2013 study, and in conjunction with additional lake sampling, begin to develop estimates of fish populations and seasonal habitat utilization patterns to be part of a larger long term adaptive management framework. 1.2 Objectives The objectives of the first year of fish data collection were to inventory habitat types, evaluate habitat utilization by fish in streams and creeks, and to determine the species of fish present within water source lakes. Data collected will also serve as the basis for both future project- specific environmental effects assessment and cumulative effects assessment. In 2014 the objectives will also include the assessment of habitat utilization and estimation of fish populations in waterbodies. This information will also be used for project planning and mitigation of the potential impacts of future development within the Husky EL494. 1.3 Approach Field work was conducted from September 6 to 13, 2013. A desktop review of previous studies and literature associated with fish in the area was followed by the selection of five streams and five lakes for biological assessment of fish resources. Fish were sampled using a combination of capture methods, including electrofishing, baited traps, seine and fyke nets. The streams were also assessed for habitat characteristics. 1.4 Study Area The local study area (LSA)(Figure 1) is a 638 km2 area including a 3 km buffer surrounding the Slater River all-season access road (ASR) and associated facilities, including past and future well sites and the previously used winter road. Sample points were distributed between the REPORT | 25500832 | FISH AND FISH HABITAT ASSESSMENT JANUARY 2014 | 1 HUSKY OIL OPERATIONS LIMITED | 2013 FISH AND FISH HABITAT ASSESSMENT SLATER RIVER PROJECT, TULITA DISTRICT, SAHTU REGION, NORTHWEST TERRITORIES Bogg Creek (192km2 total area), Slater River (261km2 total area) and Little Bear River (2209 km2 total area) drainage basins (Figure 1). 2 Methods 2.1 Fisheries Information Review The Department of Fisheries and Oceans (DFO) conducted a multi-year study (2006-2007) in other areas of the Sahtu Settlement Region (Mochnacz et. al., 2007; Mochnacz & Reist 2006). The methods utilized by this study were adapted from those used by DFO. No previous detailed study on the lakes and watercourses of the local study area were noted, but due to the proximity of the DFO studies to the local study area and communications
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