River Tamar Catchment River Water Quality Classification 1990

Home , River Kensey, River Ottery, River Tamar, River Thrushel

ENVIRONMENTAL PROTECTION NRA

National Rivers Authority

South Wast Region

River Tamar Catchment River Water Quality Classification 1990

NOVEMBER 1991 W Q P/91/013 B L MILFORD

GORDON H BIELBY BSc Regional General Manager

C V M Davies Environmental Protection Manager ACKNCWLEDGEMENTS

The Water Quality Planner acknowledges the substantial contributions made by the following staff:

R. Broome - Co-ordinator and Editor A. Burrows - Production of Maps and editorial support P. Grigorey - Production of Maps and editorial support B. Steele - Production of Forepage C. McCarthy - Administration and report compilation

Special thanks are extended to A. Burghes of Moonsoft, Exeter for computer support and the production of statistical schedules.

The following NBA sections also made valuable contributions: Pollution Control Field Control and Wardens Water Resources

Thanks also to R. Hamilton and J. Murray-Bligh for their contributions.

Suggestions for improvements that could be incorporated in the production of the next Classification report would be welcomed.

Further enquiries regarding the content of these reports should be addressed to:

Freshwater Scientist, National Rivers Authority, Manley House, Kestrel Way, EXETER, Devon EX2 7LQ RIVER HATER QUALITY IN THE RIVER TAMAR CATCHMENT

LIST OF CONTENTS Page No.

1 Introduction 1

2 River Tamar Catchment 1 3 National water Council's River Classification System 3 4 1990 River water Quality Survey 4

5 1990 River water Quality Classification 5

6 Non-compliance with Quality Objectives S 7 Causes of Non-compliance 6 8 Glossary of Terms 7

9 References 7

10 Appendices:

10.1 River Quality Objectives including Monitoring points 10.2 Basic Determinand Analytical Suite 10.3 National water Council (NWC) River Classification Systran 10.4 NWC Criteria for Nan-Metallic Determinands - Regional Variation

10.4.1 NWC Criteria for Metallic Determinands - Regional Variation

10.5 1990 River Water Quality Classification - tabular format 10.6 1990 River water Quality Classification - map format

10.7 Calculated Determinand Statistics used for Quality Assessment

10.8 Conqpliant/Non-Conqpliant River Reaches 10.9 Number of Samples Results exceeding quality standards 10.10 Percentage Exceedance of Determinand Statistics from Quality Standard 10.11 Identification of Possible Causes of Non-Compliance with River Quality Objectives National Rivers Authority South West Region

NRA Wessex Region NRA

NstJonaJ R Jn rt Authority South W »t1 R»gton River Catchment Tamar

River Tamar Catchment National Rivers Authority South West Region

NRA Wessex Region

Nations! River* Authority Soutf) IV»>t Ragton pe Tmr Catchment TamarUpper

Upper Tamar Catchment National Rivers Authority South West Region

NRA Wessex Region NRA national Rhmn Authority South W»*t Region y, huhl &Lyd, Thrushel Wolf Catchment

Lyd, Thrushel &Wolf Catchment National Rivers Authority South West Region

NRA Wessex Region NRA

National Rhmrm Authority South Watt Region tey Kne Catchment Kensey &Ottery

Ottery & Kensey Catchment National Rivers Authority South West Region River Inny Catchment 1. INTRODUCTION

Monitoring to assess the quality of river waters is undertaken in thirty- two catchments within the region. As part of this monitoring programme samples are collected routinely from selected monitoring points at a pre determined frequency per year, usually twelve spaced at monthly intervals. Each monitoring point provides data for the water quality of a river reach (in kilometres) upstream of the monitoring point.

River lengths have been re-measured and variations exist over those recorded previously.

Each water sample collected from each monitoring point is analysed for a range of chemical and physical constituents or properties known as determinands. The analytical results for each sample are entered into a computer database called the Water Quality Archive.

Selected data are accessed from the Archive so that the quality of each river reach can be determined based on a River Classification System developed by the National Water Council (NWC), (9.1). This report presents the river water quality classification for 1990 for monitored river reaches in the River Tamar catchment.

2. RIVER TAMAR CATCHMENT

For reasons of clarity the following monitoring summary is not broken up into four separate sub-catchments of the River Tamar as represented by the Water Quality Maps attached. The River Tamar flows over a distance of 78 km from its source to the tidal limit, (Appendix 10.1). Water quality was monitored at sixteen locations on the main river; fifteen of these sites were sampled at approximately monthly intervals. The site at Gunnislake, which is a National Water Quality monitoring point, was sampled fortnightly. Throughout the Tamar catchment eighteen secondary, ten tertiary, four quarternary and one quinary tributaries of the River Tamar were monitored. Tamerton Foliot Stream and Milton Brook flow over a distance of 4.3 km and 5.3 km respectively from their source to the tidal limit in the Tamar Estuary.

The following twenty-four tributaries were sampled on fifteen to twenty occasions during 1990 because of no recent water quality data: Tamerton Foliot Stream, Latchley Brook, Luckett Stream, Dameral Stream, Combebow Stream, Lowley Stream (R12E005), River Lyd (R12F012), Quither Brook (R12F003), Breazle Water (R12G010), Bratton Brook (R12G009), River Wolf

1 (R12G007), Broadwood Brook (R12G012), River Carey, Henford Water, Tala Water, Lana Lake, Derril Water (R12L012/005), Small Brook (R12L011/008), Lamberal Water (R12L010/007), Bolesbridge Water, Caudworthy Water, Canworthy Water, Tregeare Stream and Penpont Water (R12P010). 2.1 SECONDARY TRIBUTARIES

The River Inny flows over a distance of 32.5 km from its source to the confluence with the River Tamar, (Appendix 10.1) and was monitored at eight locations.

The Rivers Ottery and Carey flow over a distance of 33 km and 21.5 km respectively from their source to the confluence with the River Tamar, (Appendix 10.1) and were monitored at six locations.

The River Kensey flows over a distance of 16.8 km from its source to the confluence with the River Tamar, (Appendix 10.1) and was monitored at five locations. The River Lyd flows over a distance of 25.2 km from its source to the confluence with the River Tamar, (Appendix 10.1). The Lowley Brook (10.1 km), River Claw (12.1 km) and River Deer (16.8 km) were all monitored at three locations between their source and the confluence with the River Tamar, (Appendix 10.1). The Derrill Water (7.4 km), Small Brook (9.1 km), Lamberal Water (9.6 km) and the River Luckett (5.7 km) were all monitored at two locations between their source and confluence with the River Tamar, (Appendix 10.1). The Blanchdown Stream (0.7 km), Portontown Stream (6.4 km), Latchley Brook (1.9 km), Dameral Stream (5.5 km), Tala Water (9.5 km) and Lana Lake (4.9 km), were all monitored at one location. Monitoring points are all located in the lower reaches of these streams. 2.2 TERTIARY STREAMS

The River Thrushel flows over a distance of 21.4 km before joining the River Lyd, (Appendix 10.1) and was monitored at four locations.

Penpont Water flows over a distance of 15 km from its source to the confluence with the River Inny, (Appendix 10.1) and was monitored at three locations. The River Lew and Caudworthy Water flow over a distance of 15.8 km and 11.7 km respectively from their source to the confluence with the River Ottery, (Appendix 10.1) and were monitored at two locations.

2 Hie Tregeare (3.8 km), Canworthy Water (5.2 km), Bolesbridge Water (9.9 km), Henford Water (5.5 km), Colesmill Stream (3.5 km) and Quither Brook (6.7 km) were all monitored at one location. Monitoring points are all located in the lower reaches of these streams. 2.3 QUARTERNARY TRIBUTARIES

Combe bow Stream flows over a distance of (5.5 km) and was sampled at one site on fifteen occasions between its source and confluence with the River Lew. Breazle Water (5.7 km) and Bratton Brook (6.1 km) were both sampled at one location on fifteen occasions between their sources and confluence with and River Thrushel.

The River Wolf flows over a distance of 15.3 km from its source to the confluence with the River Thrushel, (Appendix 10.1) and was monitored at two sites at approximately monthly intervals. One site was sampled on fifteen occasions because of no recent water quality data.

2.4 QUINARY TRIBUTARY

The Broadwood Brook flows over a distance of 6.3 km from its source to the confluence with the River Wolf, (Appendix 10.1) and was monitored at one location. Each sample was analysed for a minimum number of determinands (Appendix 8.2) plus additional determinands based on local knowledge of the catchment. In addition, at selected sites, metal analyses were carried out. The analytical results from all of these samples have been entered into the Water Quality Archive and can be accessed through the Water Act Register, (9.2).

3. NATIONAL WATER COUNCIL'S RIVER CLASSIFICATION SYSTEM

3.1 River Quality Objectives In 1978 river quality objectives (RQOs) were assigned to all river lengths that were part of the routine monitoring network and to those additional watercourses, which were not part of the routine network, but which received discharges of effluents. For the majority of watercourses long term objectives were identified based on existing and assumed adequate quality for the long term protection of the watercourse. In a few instances short term objectives were identified but no timetable for the achievement of the associated long term objective was set.

3 Ihe RQOs currently in use in the River Tamar catchment are identified in Appendix 10.1.

3.2 River Quality Classification

River water quality is classified using the National Water Council's (NWC) River Classification System (see Appendix 10.3), which identifies river water quality as being one of five quality classes as shown in Table 1 below:

Table 1 - National Water Council - River Classification System

Class Description

1A Good quality IB Lesser good quality 2 Fair quality 3 Poor quality 4 Bad quality Using the NWC system, the classification of river water quality is based on the values of certain determinands as arithmetic means or as 95 percentiles (5 percentiles are used for pH and dissolved oxygen) as indicated in Appendices 10.4.1 and 10.4.2. The quality classification system incorporates some of the European Inland Fisheries Advisory Commission (EIFAC) criteria (Appendix 10.3) recommended for use by the NWC system.

4. 1990 RIVER WATER QUALITY SURVEY

The 1990 regional classification of river water quality also includes the requirements of the Department of the Environment quinquennial national river quality survey. The objectives for the Department of the Environment 1990 River Quality Survey are given below:

1) To carry out a National Classification Survey based on procedures used in the 1985 National Classification Survey, including all regional differences. 2) To classify all rivers and canals included in the 1985 National Classification Survey.

3) To compare the 1990 Classification with those obtained in 1985.

In addition, those watercourses, which were not part of the 1985 Survey and have been monitored since that date, are included in the 1990 regional classification of river water quality.

4 5. 1990 RIVER WATER QUALITY CLASSIFICATION

Analytical data collected from monitoring during 1988, 1989 and 1990 were processed through a computerised river water quality classification programme. This resulted in a quality class being assigned to each monitored river reach as indicated in Appendix 10-5.

The quality class for 1990 can be compared against the appropriate River Quality Objective and previous annual quality classes (1985-1989) also based on three years combined data, for each river reach in Appendix 10.5.

The river water classification system used to classify each river length is identical to the system used in 1985 for the Department of the Environment's 1985 River Quality Survey. The determinand classification criteria used to determine the annual quality classes in 1985, subsequent years and for 1990 are indicated in Appendices 10.4 and 10.4.1.

Improvements to this classification system could have been made, particularly in the use of a different suspended solids standard for Class 2 waters. As the National Rivers Authority will be proposing new classification systems to the Secretary of State in the near future, it was decided to classify river lengths in 1990 with the classification used for the 1985-1989 classification period. The adoption of the revised criteria for suspended solids in Class 2 waters would not have affected the classification of river reaches. The river quality classes for 1990 of monitored river reaches in the catchment are shown in map form in Appendix 10.6,

The calculated determinand statistics for pH, temperature, dissolved oxygen, biochemical oxygen demand (BOD), total ammonia, un-ionised ammonia, suspended solids, copper and zinc from which the quality class was determined for each river reach, are indicated in Appendix 10.7.

6. NON—COMPLIANCE WITH QUALITY OBJECTIVES Those monitored river reaches within the catchment, which do not comply with their assigned (RQO), are shown in map form in Appendix 10.8.

Appendix 10.9 indicates the number of samples analysed for each determinand over the period 1988 to 1990 and the number of sample results per determinand, which exceed the determinand quality standard.

For those non-compliant river reaches in the catchment, the extent of exceedance of the calculated determinand statistic with relevant quality standard (represented as a percentage), is indicated in Appendix 10.10.

5 7. CAUSES OF NON—COMPLIANCE

For those river reaches, which did not comply with their assigned RQOs, the cause of non-compliance (where possible to identify) is indicated in Appendix 10.11.

6 8. GLOSSARY OF TERMS

RIVER REACH A segment of water, upstream from sampling point to the next sampling point. RIVER LENGTH River distance in kilometres. RIVER QUALITY OBJECTIVE That NWC class,which protects the most sensitive use of the water. 95 percentiles Maximum limits, which must be met for at least 95% of the time. 5 percentiles Minimum limits, which must be met for at least 95% of the time.

BIOLOGICAL OXYGEN DEMAND A standard test measuring the microbial uptake of (5 day carbonaceous ATU) oxygen - an estimate of organic pollution. pH A scale of acid to alkali. UN-IONISED AMMONIA Fraction of ammonia poisonous to fish, NHS.

SUSPENDED SOLIDS Solids removed by filtration or centrifuge under specific conditions. USER REFERENCE NUMBER Reference number allocated to a sampling point. INFERRED STRETCH Segment of water, which is not monitored and whose water quality classification is assigned from the monitored reach upstream.

9. REFERENCES

Reference

9.1 National Water Council (1977). River Water Quality: The Next Stage. Review of Discharge Consent Conditions. London.

9.2 Water Act 1989 Section 117

9.3 Alabaster J. S. and Lloyd R. Water Quality Criteria for Freshwater Fish, 2nd edition, 1982. Butterworths.

7 Upper Tamar Catchment Appendix 10.1 River Quality Objectives Lyd, Thrushel & Wolf Catchments River Quality Objectives

HivetW ofl

Button lltook

N W C Class 1A

NWC Class 1B Brea/te Watec N W C Class 2

NWC Class 3

NWC Class 4

Not monitored

Version 1 /1990 Rivet Thrushel Rivet I ew

Scale

River lam ar River Carey

Combebow Stre<

Oll.’iv

River Kensey pedx 10.1 Appendix

Quit her Brook Ottery & Kensey Catchments River Quality Objectives Inny Catchment River Quality Objectives APPENDIX 10.2

BASIC DETERMINAND ANALYTICAL SUITE FOR ALL CLASSIFIH) RIVER SITES

pH as pH Units

Conductivity at 20 C as uS/cm

Water temperature (Cel) Oxygen dissolved % saturation Oxygen dissolved as mg/1 O

Biochemical oxygen demand (5 day total ATU) as mg/1 O Total organic carbon as mg/1 C

Nitrogen ammoniacal as mg/1 N Ammonia un-ionised as mg/1 N Nitrate as mg/1 N Nitrite as mg/1 N

Suspended solids at 105 C as mg/1 Total hardness as mg/1 CaC03 Chloride as mg/1 Cl Orthophosphate (total) as mg/1 P Silicate reactive dissolved as mg/1 Si02

Sulphate (dissolved) as mg/1 S04 Sodium (total) as mg/1 Na Potassium (total) as mg/1 K Magnesium (total) as mg/1 Mg

Calcium (total) as mg/1 Ca

Alkalinity as pH 4.5 as mg/1 CaC03 APPENDIX 10.

NVC RIVER QUALITY CLASSIFICATION SYSTEM

River Class Quality criteria Remarks Current potential uses

Class 1 ini ting criteria (95 percentile)

1A Good (i) Dissolved oxygen saturation (i) Average BOD probably not !i) Hater of high quality Quality greater than SOX greater than 1.5 rg/1 suitable for potable supply (ii) Biochemical oxygen demand (ii) Visible evidence of pollution abstractions and for all not greater than 3 mg/1 should be absent abstractions (iii) Annonia not greater than 'ii) Game or other high class 0.4 rg/1 fisheries (iv) Where the water is abstracted 'iii) High amenity value for drinking water, it complies with requirements for A2* water (v} Non-toxic to fish in EIFAC terns (or best estimates if EIFAC figures not available)

IB Good (i) 00 greater than 60X saturation (i) Average BOD probably not Hater of less high quality Quality (ii) BOD not greater than 5 mg/1 greater than 2 mg/1 than Class 1A but usable for (iii) Ammonia not greater than (ii) Average ammonia probably not substantially the same 0.9 mg/1 greater than 0.5 mg/1 purposes (iv) Where water is abstracted for (iii) Visible evidence of pollution drinking water, it complies with should be absent the requirements for A2* water (iv) Waters of high quality which (v) Non-toxic to fish in EIFAC terms cannot be placed in Class 1A (or best estimates if EIFAC because of the high proportion figures not available) of high quality effluent present or because of the effect of physical factors such as canalisation, low gradient or eutrophication (v) Class 1A and Class IB together are essentially the Class 1 of the River Pollution Survey (RPS)

2 Fair (i) DO greater than 40X saturation i) Average BOD probably not i) Haters suitable for potable Quality (ii) BOD not greater than 9 mg/1 greater than 5 mg/l supply after advanced (iii) Where water is abstracted for ii) Similar to Class 2 of RPS treatment drinking water it complies with iii) Hater not showing physical ii) Supporting reasonably good the requirements for A3* water signs of pollution other than coarse fisheries (iv) Non-toxic to fish in EIFAC terms humic colouration and a little iii) Moderate amenity value (or best estimates if EIFAC foaming below weirs figures not available) oor (i) DO greater than 101 saturation Similar to Class 3 of RPS Waters which are polluted to lity (ii) Not likely to be anaerobic an extent that fish are absent (iii) SOD not greater than 17 ng/1. only sporadically present. This lay not apply if there is a Hay be used for low grade high degree of re-aeration industrial abstraction purposes. Considerable potential for further use if cleaned up ad Waters which are inferior to Sinilar to Class 4 of RPS Waters which are grossly lity Class 3 in terns of dissolved polluted and are likely to oxygen and likely to be cause nuisance anaerobic at tines

DO greater than 10X saturation Insignificant watercourses and ditches not usable, where the objective is sinply to prevent nuisance developing es (a) Under extreme weather conditions (eg flood, drought, freeze-up), or when dominated by plant growth, or by aquatic plant decay, rivers usually in Class 1, 2, and 3 nay have BODs and dissolved oxygen levels, or annonia content outside the stated levels for those Classes. When this occurs the cause should be stated along with analytical results. (b) The BOD deterninations refer to 5 day carbonaceous BOD (ATU). Annonia figures are expressed as NH<. «* (c) In nost instances the chenical classification given above will be suitable. However, the basis of the classification is restricted to a finite nunber of chenical deterninands and there nay be a few cases where the presence of a chenical substance other than those used in the classification narkedly reduces the quality of the water. In such cases, the quality classification of the water should be down-graded on the basis of biota actually present, and the reasons stated. (d) EIFAC (European Inland Fisheries Advisory Connission) 1 inits should be expressed as 95 percentile linits.

EC category A2 and A3 requirenents are those specified in the EEC Council directive of 16 June 1975 concerning the Quality of Surface ater intended for Abstraction of Drinking Water in the Menber State.

Annonia Conversion Factors

(ng NHi/1 to ng N/l)

Class 1A 0.4 ng NH

NWC RIVER CLASSIFICATION SYSTQ1

CRITERIA USED BY NATIONAL RIVERS AUTHORITY - SOUTH WEST REGION FOR NGN- METALLIC DETERMINANDS

River Quality Criteria Class

1A Dissolved oxygen % saturation greater than 80% BOD (ATU) not greater than 3 mg/1 O Total ammonia not greater than 0.31 mg/1 N Non-ionised ammonia not greater them 0.021 mg/1 N Temperature not greater than 21.5 C pH greater than 5.0 and less than 9.0 Suspended solids not greater than 25 mg/1 IB Dissolved oxygen % saturation greater than 60% BOD (ATU) not greater them 5 mg/1 O Total ammonia not greater than 0.70 mg/1 N Non-ionised ammonia not greater them 0.021 mg/1 N Temperature not greater than 21.5 C pH greater than 5.0 and less than 9.0 Suspended solids not greater than 25 mg/1 2 Dissolved oxygen & saturation greater than 40% BOD (ATU) not greater than 9 mg/1 O Total ammonia not greater them 1.56 mg/1 N Non-ionised ammonia not greater than 0.021 mg/1 N Temperature not greater than 28 C pH greater than 5.0 and less than 9.0 Suspended solids not greater than 25 mg/1 3 Dissolved oxygen % saturation greater than 10% BOD (ATU) not greater than 17 mg/1 0 4 Dissolved oxygen % saturation not greater than 10% BOD (ATU) greater than 17 mg/1 O

STATISTICS USED BY NATIONAL RIVERS AOTBCJRITY - SOUTH WEST REGION

Determinand Statistic Dissolved oxygen 5 percentile BOD (ATU) 95 percentile Total ammonia 95 percentile Non-ionised ammonia 95 percentile Temperature 95 percentile pH 5 percentile 95 percentile Suspended solids arithmetic mean APPENDIX 10.4.1

NWC RIVER CLASSIFICATION SYSTEM

CRITERIA USED BY NATIONAL RIVERS AUTHORITY - SOUTH WEST REGION FOR METALLIC DETERMINANDS

SOLUBLE COPPER

Total Hardness (mean) Statistic Soluble Copper* mg/1 CaC03 ug/1 Cu Class 1 Class 2 0-10 95 percentile < *» 5 > 5 10 - 50 95 percentile < = 22 > 22 50 - 100 95 percentile < a 40 > 40 100 - 300 95 percentile < - 112 > 112

* Total copper is used for classification until sufficient data on soluble copper can be obtained.

TOTAL ZINC

Total Hardness (mean) Statistic Total Zinc mg/1 CaC03 ug/1 Zn Class 1 Class 2 Class 3 0-10 95 percentile < « 30 < « 300 > 300 10 - 50 95 percentile < = 200 < *= 700 > 700 50 - 100 95 percentile < = 300 < = 1000 > 1000 100 - 300 95 percentile < = 500 < - 2000 > 2000 NATIONAL RIVERS AUTHORITY - SOUTH WEST REGION 1990 RIVER WATER QUALITY CLASSIFICATION CATCHMENT: TAMAR (13)

|1990 Map River |Reach upstream of User National | Reach |Distance River 85 86 87 88 89 90 | NWC NWC NWC NWC | jPosition 1 Reference Grid | Length j from Quality NWC NHC | source Class Class Class Classj j Number 1 Number Reference | (km) Objective Class Class | (km) 1 1 1 1 1 1 1 1 1 1 1 1 | 1 TAMAR |BUSES BRIDGE R12L001 SS 2808 1338| 4.2 1 4.2 IB 2 2 2 2 IB IB | 1 TAMAR |INFLOW,UPPER TAMAR LAKE (INF. STRETCH) 0.2 ( 4.4 IB 2 2 2 2 IB IB | R12L017 ss 2891 1188| 1.7 | 6.1 IB 2 2 2 IB IB 2 1 1 2 TAMAR |UPPER TAMAR LAKE | TAMAR |INFLOW, LCWER TAMAR LAKE (UNHDN. STRETCH) 0.4 | 6.5 IB 2 2 2 IB IB 1 | 3 TAMAR | LOWER TAMAR LUCE R12L018 ss 2962 1085| 0.9 1 7.4 IB 2 2 2 IB IB IB | IB 1 4 TAMAR |FOOTBRIDGE BELOW LOWER TAMAR LAKE R12L009 ss 2956 1070| 0.1 1 7.5 IB 2 2 2 IB IB | | 5 TAMAR jDEXBEER BRIDGE R12L006 ss 2953 0895| 3.0 | 10.5 IB 2 2 2 IB IB IB | R12L016 ss 2833 0845| 1.8 | 12.3 IB 2 2 IB 2 IB 1 6 TAMAR IMORETON MILL 3 I 1 7 TAMAR ITAMARST0NE BRIDGE R12L002 ss 2835 0548| 4.5 | 16.8 IB 2 2 IB 2 IB 2 | R12L015 2748 0288| t 21.2 IB 2 2 2 2 2 IB j 1 & TAMAR |BRIDGERULE ss 4.4 2 2 2 2 1 9 TAMAR |CROWFORD BRIDGE R12L003 sx 2873 9944| 5.4 | 26.6 IB 2 2 I 2 2 | 1 io TAMAR |TAMERTON BRIDGE R12L004 sx 3176 9738| 5.1 | 31.7 IB 2 2 2 2 R12L013 sx 3190 9726| 0.3 | 32.0 IB 2 2 2 2 2 1 U TAMAR | BELOW CONFLUENCE H i m RIVER DEER 3 1 | 39.0 IB 2 2 2 2 2 1 12 TAMAR |BOYTON BRIDGE R12J001 sx 3284 9228| 7.0 3 i |DRUXTON BRIDGE R12J002 sx 3444 8833| 5.9 | 44.9 IB 2 2 2 2 2 3 | 1 ** TAMAR R12J003 sx 3483 8675) 1.9 | 46.8 IB 2 2 2 2 2 3 | 1 14 TAMAR |NETHERBRIDGE 2 IB IB 2 2 3 j 1 15 TAMA& |POLSON BRIDGE R12J004 sx 3559 84901 2.5 j 49.3 IB 1 I6 TAMAR IGREYSTONE BRIDGE R12E001 sx 3683 8038 | 6.6 | 55.9 IB 2 IB IB 2 2 3 1 2 IB 3 | 1 I? TAMAR |HORSEBRIDGE R12E002 sx 4001 7486| 11.9 | 67.8 IB IB IB 2 1 IB TAMAR | GUNNISLAKE BRIDGE R12E003 sx 4332 7224) 9.0 | 76.8 IB 2 2 2 IB IB 3 | 1 TAMAR |NORMAL TIDAL LIMIT (INFERRED STRETCH) 1.2 | 78.0 IB 2 2 2 IB IB 3 1 1 1 1 0.7 3 3 3 3 | 1 19 BLANCHDOWN STREAM | PRIOR TO RIVER TAMAR R12E004 sx 4325 7291| 1 °-7 1 1 1 | 20 FQHTOWTOWN STREAM |GRENOVEN WOOD R12E015 sx 4138 7439| 5.6 | 5.6 IB IBIB IB 2 2 2 | 1 PORTOCTICWN STREAM |TAMAR CONFLUENCE (INFERRED STRETCH) 0.8 | 6.4 IB IBIB IB 2 2 2 1 1 1 1 1 21 LATCHLEY BROOK | LATCHLEY R12E028 sx 4088 7374| 1.7 1 1*7 IB 2 | 1 LATCHLEY BROOK (TAMAR CONFLUENCE (INFERRED STRETCH) 0.2 1 1-9 IB 2 1 1 1 1 1 22 UK-iUiir [OLBKILL R12E016 sx 3700 7385| 3.2 1 3.2 2 2 2 2 2 2 IB | 1 23 LUCKETT |LUCKETT BRIDGE R12E007 sx 3888 7368| 2.1 1 5.3 2 2 2 2 2 2 2 I 10.5 Appendix 2 1 LUCKETT |TAMAR CONFLUENCE (INFERRED STRETCH) 0.4 1 5.7 2 2 2 2 2 2 i 1 1 1 1 24 DAMEREL STREAM {PRIOR T O RIVER TAMAR R12E014 sx 3989 7549| 5.4 1 5.4 IB IBIB 2 2 2 IB | IB 2 2 IB | 1 DAMEREL STREAM |TAMAR CONFLUENCE (INFERRED STRETCH) 0.1 1 5.5 IB IB 2 1 1 1 1 25 i n n y | UPSTREAM OF DAVTDSTOW CREAMERY R12P001 sx 1533 8702| 1.4 1 1*4 IB IB 2 2 2 2 2 | 1 26 INNY ITREWItmOW BRIDGE R12P002 sx 1701 8650| 2.0 | 3.4 IB IBIB IB 2 2 2 I 1 27 INNY | ST . CLETHER BRIDGE R12P003 sx 2061 8418| 4.7 | 8.1 1A IBIB IB IB IB IB | 1 28 i n n ; |GIMBLETT'S MILL R12P012 sx 2419 8339| 4.5 | 12.6 LA IBIB IBIB 2 IB | 1 29 INNY |TWO BRIDGES R12P004 sx 2706 8175| 4.3 | 16.9 LA IBIB IBIB 2 IB | | 30 INNY |TREKELLAND BRIDGE R12POOS sx 3002 7987| 4.3 | 21.2 LA IB IB IBIB IB IB | 1 31 INNY |TRECARRELL BRIDGE R12P013 sx 3202 7713j 4.6 | 25.8 IB IB 2 2 2 IB IB | 1 32 INNY | BEALS MILL BRIDGE R12P006 sx 3588 7706 J 4.3 | 30.1 IB IB 2 2 2 IB IB | NATIONAL RIVERS AUTHORITY - SOUTH WEST REGION 1990 RIVER WATER QUALITY CLASSIFICATION CATCHMENT: TAMAR (13)

|1990 Map River (Reach upstream of | User National | Reach |Distance River 85 86 87 88 89 90 | jPosition 1 (Reference Grid | Length | from Quality NHC wrc NHC NHC NHC n m : j | Number 1 | Number Reference j (km) | source Objective Class Class Class Class class Class| 1 1 t (km) 1 1 1 1 1 1 1 1 1 1 LANA LAKE |TAMAR CONFLUENCE (INFERRED STRETCH) 1 1.8 | 4.9 IB 2 2 3 3 3 2 | 1 1 1 | 82 CLAW | CLAW BRIDGE | R12K016 ss 3746 0071| 4.2 1 4.2 IB 2 2 2 2 2 2 1 1 93 CLAW (CLAWTON BRIDGE ( R12K001 sx 3533 9932| 2.9 1 7.1 IB 2 2 2 2 2 2 I I 84 CLAW |TLTC0rr BRIDGE ( R12K002 sx 3267 9692) 4.3 | 11.4 IB 2 2 2 2 2 3 | a w (TAMAR CONFLUENCE (INFERRED STRETCH) 1 0.7 | 12.1 IB 2 2 2 2 2 3 1 1 1 1 | 05 DEER |RYDON BRIDGE | R12K003 ss 3356 0415 ( 6.8 | 6.8 IB 2 2 2 2 2 2 I | 86 DEER {wiNscorr bridge | R12K004 ss 3386 0142| 3.8 1 10.6 IB 2 2 2 2 2 IB | 1 87 DEER (DEER BRIDGE | R12K005 sx 3195 9741| 6.0 | 16.6 IB 2 2 2 2 2 2 | DEER (TAMAR CONFLUENCE (INFERRED STRETCH) 1 0.2 | 16.8 IB 2 2 2 2 2 2 1 1 1 1 | 88 COLESMILL STREAM 1100 METRES BELOW OF HOLSHOKTHY STW | R12K007 ss 3387 0317| 3.3 | 3.3 2 2 2 | COLESMILL STREAM |DEER CONFLUENCE (INFERRED STRETCH) 1 0.2 | 3.5 2 2 2 I 1 1 \ | 89 DERRIL HATER |DUX BRIDGE | R12L012 ss 2962 02721 2.7 | 2.7 IB 2 2 2 2 | | 90 DERAIL HATER |DUALSTONE BRIDGE | R12L005 ss 3013 0058) 2.5 | 5.2 IB 2 2 2 2 I DERRIL HATER |TAMAR CONFLUENCE (INFERRED STRETCH) 1 2.2 1 7.4 IB 2 2 2 2 ( 1 1 1 1 91 SMALL BROOK |HEADON BRIDGE | RI2L011 ss 3100 0731| 3.7 1 3.7 IB 3 3 3 ( | 92 SMALL BROOK IYOULDON BRIDGE | R12L008 ss 2995 0528| 2.5 | 6.2 IB 3 3 3 | SMALL BROOK |TAMAR CONFLUENCE (INFERRED STRETCH) 1 2.9 1 9.1 IB 3 3 3 I 1 1 1 1 93 UtMBERAL HATER |PORDA | R12L010 ss 2771 1119| 5.3 I 5.3 IB 2 2 2 2 2 IB ( 1 94 LAMBERAL HATER (MDRETON FOUND BRIDGE | R12L007 ss 2758 0693| 3.2 | 8.5 IB 2 2 2 2 2 2 ( LAMBERAL HATER (TAMAR CONFLUENCE (INFERRED STRETCH) 1 1.1 | 9.6 IB 2 2 2 2 2 2 I 1 1 Lyd, Thrushel & Wolf Catchments Water Quality -1990 pedx 10.6 Appendix Upper Tamar Catchment Appendix 106 Water Quality -1990

NWC

NWC Lamberal Water N W C C la ss

Tamar NW C Class 3 Lakes NW C Class 4

Small Brook Not monitored

Version 1/1900

Derrili Walei Colesmill Stream

Tala Water

River Kensey Ottery & Kensey Catchments Water Quality -1990 Inny Catchment Water Quality -1990

Lyd Catchment

River Inny River Kensey

L owiey Brook River Lyd

Penpont Waloi

uam etoi

Scale

Key , , w 2 0 fcPoitontown

N W C Class 1A , 21 / Z' chdown NWC Class IB l ucKott NWC Class 2

NWC Class 3 Latchley Brook y q • pedx 10 6 Appendix NWC Class 4 TL .1 Not monitored River T amai

Veision 1 /1990 N O T U N . RHBRS / U M E TIY - SCUIH VEST HFITn'JJ 1990 im ra vrara oi»iOT ajssm ooam oam/ag> m nwrwp sronsncs \e e d kb quwjnr jegsatur OTOMNT: UWft (13)

(Hivsr |Ranch \(stxeem cf | U * r 90 ("hlmlflfwrl Maiinimrri aafcudaen irarf finr Qnlity VtTnrt'ananfr 1 1 | Raf. n c 1 1 1 flwa 1 1 I nr f w fH IDMT 1 | Ttenponture 0D (%) BCD (JOU) fitted A n n a [Uuai. A m L a I S . M i A Tbtal Q q v Total Zinc | 1 1 1 Class 5%Ue | Ons3 95%ile | Class 96UL b G a s s 5%il» G j s s 95bla | Class 95kilt | class 9 % 1 a | <3abs ftai Class 95%ils doss 95tila | 1 1 1 1 1 1 1 1 1 1 l _ . 1 It m w |ele es a a m s [K12LD01 IB 1A 6.6 1 1A 7.7 1 1A 15.6 IB 73.2 IB 4.2 1 IB 0.616 1 1A 0.010 1 1A 8.9 1A 5.8 1A 18.5 j (rot® |lHBt ntKt LN B |R12lfll7 2 1A 7.0 1 1A 7.5 1 1A lfi.9 2 48.0 2 5.6 1 IB 0.680 1 1A 0.010 1 1A 10.6 _ _ I | m « « [piTtmn jllMER U*f« LM E IB 1A 6.9 1 uv 7.5 1 1A 18.8 IB 68.0 IB 4.8 1 1A 0.190 1 1A 0.010 1 1A 19.1 _ _ _ | | m « R jHTJimimi m a t iocs m m lake [H12I0Q9 IB 1A 6.5 1 7.6 | 1A 18.8 IB 63.4 IB 3.9 1 1A 0.202 1 1A 0.010 1 1A 14.7 1A 5.2 1A 11.2 | (TONI jnaoBEZB sa n s [K12LD06 IB 1A 6.6 1 1A 7.7 1 1A 16.1 IB 67.6 IB 4.8 1 IB 0.406 1 lA 0.010 1 1A 13.9 1A 6.6 1A 9.3 | pJMKt HllXi (E12ID1G 3 1A 6.9 1 1A 7.6 | 1A 16.5 IB 80.0 IB 3.4 1 1A 0.270 1 1A 0.010 | 3 25.4 1A 5.0 1A 18.0 | |Ut*R ImVCOLK uuun |RL2XiX>2 2 1A 6.7 1 1A 7.7 1 1A 16.8 2 48.6 2 5.8 1 IB 0.450 t 1A 0.010 1 1A 22.1 1A 10.2 1A 48.4 | p m * | a a o m i £ |R12im5 IB 1A 6.6 1 1A 7.9 1 1A 17.3 IB 67.9 IB 4.4 1 IB 0.381 1 1A 0.010 1 IA 22.6 lA 7.0 1A 97.7 | p w « t laorao ERmZ |R12ID03 2 lA 6.8 1 1A 8.2 1 1A 17.6 IB 69.6 2 8.9 1 ^ 0.840 t 1A 0.(00 1 1A 24.4 1A 32.5 1A 293.0 | front I'JNUULN s a n z |K1Z0O4 2 1A 6.7 1 1A 8.0 1 1A 17.7 IB 61.6 2 8.5 1 IB 0.683 1 1A 0.010 1 !A Z3.9 1A 6.2 1A 20.8 | [TMTO |EEtEW am U D X Z NT1H HTOR CU R IH12LDU 3 1A 6.9 1 !A 7.6 1 1A 17.8 IB 76.0 2 5.1 1 IB 0.370 1 1A 0.010 | 3 42.1 1A 7.0 1A 27.0 | iBonai san s JRL230Q1 3 1A 6.7 1 1A 7.8 1 1A 17.4 2 46.2 2 6.4 1 IB 0.442 1 1A 0.010 | 3 26.7 1A 7.1 lA 51.2 | | U M R jn u a n t B a n s P02XQ2 3 1A 6.9 1 !A 8.7 1 1A 17.9 3 39.0 3 10.2 1 IB 0.588 1 1A 0.010 | 3 32.0 1A 9.3 1A 29.3 | IIEDUWIIUS ( m x o a 3 1A 6.8 1 1A 8.5 1 1A 17.8 IB 62.8 2 7.6 1 IB 0.S84 1 !A 0.010 | 3 30.7 1A 8.2 lA 39.8 | | m « R |BXAB BULEE [HUJ004 3 1A 6.6 1 1A 7.6 1 1A 17.7 IB 62.0 2 5.7 1 IB 0.468 1 !A 0.010 1 3 36.1 1A 10.0 1A 49.3 | f B M W Idtmic mime [RL2BDQ1 3 1A 6.7 1 1A 7.6 1 1A 17.3 IB 64.0 2 6.6 1 IB 0.410 i 1A 0.010 | 3 40.3 1A 12.4 1A 92.2 | fDffR iH K tU U U K [R12S02 3 1A 6.8 1 I * 7.9 1 1A 17.2 IB 77.0 IB 4.7 1 1A 0.240 1 !A 0.010 1 3 31.3 1A 10.0 1A 44.0 | r u « « lavtaxMG Hanz (KL2E003 3 1A 6.8 1 u 7.8 1 1A 19.2 IB 74.2 2 7.2 1 1A 0.238 1 1A 0.010 | 3 32.9 lA 26.0 lA 50.0 | 1 1 1 1 lEUKHENfS&BM |H0£R ID RXVHft M R IK12S04 3 3 3.3 1 !A 7.4 1 1A lfi.O IB 75.0 1A 2.0 1 IB 0.606 1 !A 0.010 | 3 29.2 2 10383.0 3 2324.0 | 1 1 1 1 (pcRimrcMi sm o « KxcrooQitczz) [KL2E015 2 1A 7.0 1 *A 7.8 1 1A 15.4 2 59.4 IB 3.3 1 1A 0.135 1 lA 0.010 1 1A 10.3 IA 1.9 lA 174.0 | 1 1 1 I luaossr brock IIAKH& IRL2X128 2 1A 6.2 1 1A 7.3 t !A 16.8 1A 83.2 1A 1.8 t I* 0.069 1 1A 0.010 1 1A S."l“ 2 160.0 2 560.0 | 1 1 1 1 |1IXBETT Ku m u l [R12E016 IB 1A 6.6 1 1A 7.7 1 1A 16.4 IB 71.7 1A 2.1 1 1A 0.129 1 lA 0.010 1 1A 6,1 1A 25.0 1A 177.0 | jiim E a r jiuadT amzB IR12X3G7 2 1A 6.9 1 1A 7.7 1 1A 14.7 IB 67.2 1A 3.0 1 1A 0.110 1 0.010 1 1A 8.8 2 T5.6 2 540.0 | 1 1 1 1 | y n j u j |HUUt TO H M R Slffi |KL3S14 IB 1A 7.1 1 1A 8.0 t 1A 16.4 IB 62.3 IB 3.2 1 1A 0.110 1 ^ o.tno 1 ^ U .O 1A 25.6 1A 138.0 | 1 1 1 I | IBOT |UU11VJM If L W U U U H U U n U (R12F0Q1 2 1A 6 .4 1 1A 7 .5 1 1A 15.0 2 56.7 2 6.0 t 2 1.147 1 1A 0.010 1 1A 10.0 lA 7.6 1A 72.8 | jllN f lnuQNWtsans (E12F002 1A 2 6.5 1 1A 7.9 1 1A 15.3 2 56.8 2 5.6 t IB 0.615 1 1A 0.013 1 1A 8.0 1A 8.7 1A 188.9 | |TO ff |dT. dEMS nans 1103003 1A IB 7.0 1 1A 8.1 1 1A 15.2 IB 67.0 IB 4.8 1 IB 0.336 1 1A 0.010 1 1A 12.8 1A 18.8 lA 131.6 | jo n r |GDOEirs MUL IRL2FQ12 IB 1A 6.8 1 1A 8.1 1 1A 16.0 1A 82.5 IB 4.0 1 1A 0.131 1 1A 0.010 1 1A U.5 1A 8.0 1A 23.0 | jm v (n o g r u b s [R12P004 IB 1A 7.0 1 1A 8.1 1 1A 16.5 IB 63.2 IB 3.4 1 1A 0.250 t 1A 0.010 1 1A 34.7 1A 8.4 1A Z7.2 | jn w tlSUdUAD Htms (H12J005 1A IB 6.9 1 1A 7.9 1 1A 16.3 IB 71.8 IB 3.1 | 1A 0.153 1 1A 0.010 1 1A 13.6 U 7.0 1A 28.4 | jn tc r fiKuastu. nans IK12013 IB 1A 6.4 1 1A 7.9 1 1A 16.9 1A 84.6 1A 2.3 1 IB 0.341 1 !A 0.010 1 1A 10.6 1A 15.0 1A 57.0 | |n w |BM£ MQL gniUi |R12F006 IB 1A 7.0 1 1A 8.0 1 !A 17.0 IB 67.8 IB 3.1 1 1A 0.110 1 1A 0.010 1 1A 15.1 1A 23.2 1A 67.8 | 1 1 1 | ira s c n r v h s r jUCZXR n m ra |R12F010 IB 1A 5.7 1 1A 7.3 | 1A 16.3 ]£ 63.0 IB 3.4 1 1A 0.125 1 1A o.coo 1 1A 1A 5.9 1A §2.6 | jm v o iT M n a i IM 3 H IU 1 GRHXZ IR12F007 IB 1A 6.2 1 !A 7.7 1 1A 1S.6 IB 76.3 1A 2.6 1 1A 0.095 1 1A 0.010 1 1A 4.8 1A 17.1 1A 33.8 | jraicNrviasi | r o a u r a s |R12P008 IB 1A 6.6 1 1A 7.8 1 1A 16.0 IB 74.0 1A 3.0 1 1A 0.060 1 1A 0.010 1 !A 9.3 1A 8.6 1A 38.0 | 1 1 1 1 |IOCE2T BOCK |U*CUMB HUE® |RL2BOOS 3 1A 6.9 1 1A 8.4 1 1A 16.6 IB 79.0 2 8.6 1 IB 0.696 1 1A 0.010 | 3 31.4 1A 18.0 1A 67.0 | MQ3XML RTVEB5 JViHKQY - 3XHH VEST BEEN 1590 RIV5R WRIER QLMJ3Y CLftSSTFTOtnCN CMnifflED EEEJWEWC SOTELSUCS USED KK (JWJTSf ASSESafNT aCOKNT: IKffi (13)

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Bratton Brook

Compliance

Non compliance

Not monitored

Version 1 /1990

River Lew

Broadwood Br

River Lyd Scale

River Tamar River Carey

River Ottery

River Kensey pedx 10 8 Appendix

Ouither Brook Ottery & Kensey Catchments Compliance -1990

Compliance Caudworthy Water Non compliance

Not monitored

Bolesbndge Water

Version 1/1990

River 1 amar

Rrver Ottery

River Carey / 14 /

Rrver Kensey

Tregaare Stream pedx 10 8 Appendix River Lyd

River Tamar Inny Catchment Compliance -1990 pedx 10 8 Appendix

rwnn®L hners u m a t m - scum war raacn 1990 HIVER WBR QCNZR G/lGSITIGtnEN RIOR CP SMfUS (R) «D IUOR OF SVfUS kmvhhm: QUU3Y SHOW) (F) OtTOMNr: TPM« (13)

|Ruar |Rnefa hiiU bm at 1 U *r | ffl L ow £H m * r | toEperature DO i\) 1 bcd (Ann (Tbtal A m nia [Urim. JBncnia| S.SoLkfa | Ibtal Qfpar to ta l Zinc 1 1 te f. 1 1 1 1 1 1 | NLnbnr| N F h r | R F R F 1 N F | N P | N r 1 n r j N F N F 1 1 I 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 |H**R l a s s a a n £ |H12Um| 43 - 43 - 1 43 - 43 - 1 43 1 1 43 1 1 43 43 1 1 34 - 34 - ITWTO |imR n t R im b |K1ZJQ17| 12 - 12 - 1 12 - 12 1 I 12 1 1 12 - 1 12 - | 12 1 1 12 - 12 - |TOMt |lOCR B tH l UKE p0212U| 12 - 12 - 1 12 - 12 - 1 12 - 1 12 - 1 12 - I 12 3 1 12 - 12 - fOWR iRsngQDz m a t iocr m m lwe |H12UX»| 37 - 37 - 1 37 - 37 1 1 37 1 1 37 - I 37 - 1 37 5 | 36 - 36 — (m m lEEXSZR BtlEZ |KL2LOOS| 37 - 37 - 1 ** - 37 - 1 37 1 1 37 - 1 37 - 1 37 4 1 36 - 3fi - |u#«w pcrcnzi MIL [HI 2101,61 12 - 12 - 1 12 - 12 - 1 12 - 1 12 - 1 u - | 12 3 1 12 - 12 - fn w i pmnsaxxE Bans |H12L0O2| 44 - 44 - 1 M - 43 2 t 44 2 1 44 - 1 44 - | 44 7 1 38 - 38 1 | n n (UU1U3IXE pOZ015| 22 - 22 - 1 22 - 22 - t 22 - 1 22 - 1 22 _ | 22 6 1 22 - 22 _ from laoiao aanz |R12LD03| 37 - 37 1 1 * - 36 - 1 37 4 1 37 3 1 36 - 1 37 8 1 34 1 34 1 pJMW fDKRBLR HUllIf p02IX)4| 42 - 42 1 t 42 - 42 1 1 41 4 1 42 1 1 41 - | 42 7 1 35 - 35 - fm fn ja z a r a w iib z z wnn hotr eer [J02L013| 12 - 12 - 1 12 - 12 - 1 12 1 1 12 - 1 12 - 1 12 3 1 12 - 12 - fm «R lanenm auiui [RUXOll 42 - 42 1 1 42 - 42 4 1 42 3 1 42 - 1 41 - | 42 9 1 38 _ 38 1 flw ra lo u o m a m iz |H12X02| 36 - 36 1 t 35 - 35 2 1 36 5 1 36 1 1 34 - | 36 6 1 33 - 33 - - 1 - ~ fUWR pcD cn fu u x |K12X03| 37 - 3T7 1 1 35 - 35 1 1 37 4 1 37 1 1 33 37 8 1 36 36 rm fR IKXSCNBOIXS |R12X04| 41 - 41 - t 41 - 40 1 1 41 5 1 41 - 1 41 - | 41 11 1 37 - 37 - f n m KZEZSQXXE IftUlUS [RL2EX3Q1| 39 - 39 - 1 39 - 38 - 1 39 4 1 39 - 1 39 _ I 39 11 1 31 - 31 - fn tfn |UKU§UiU£ [pledgci 39 - 39 - 1 39 - 39 - 1 39 1 1 39 - I 39 - | 30 10 1 32 - 32 - in tr o joirasuic sons 0028031 61 — 61 — 1 ® 1 60 1 1 £1 3 1 61 — 1 29 61 12 1 SB - 99 ~ 1 1 1 1 1 I 1 (Euvncon aocxM |OTER ID HIVER UMHR p02B>04| 21 21 — 1 20 19 1 21 1 21 1 12 2i ~ t 21 21 1 1 1 1 1 I 1 |UK1LN1U>N SBCfft Khtovehktd [HL2ED15| 29 29 “ 1 29 28 1 1 29 “ 1 29 - t 26 29 1 1 22 22 — 1 1 1 1 1 I 1 IU0CHUY BROCK iLKXCHISr [K12C28| 20 — 20 — 1 20 — 2D — 1 20 1 20 I 14 “ 1 2D 1 13 ID l i 2 1 1 1 1 1 InZXEIT (CLOCU, JHL£Q16| _ _ _ A) - 20 - 1 » - a 1 » 1 20 1 20 — 1 20 12 lnxzEzr [IirKETT BUBS 1 u \asxn\ J7 - 37 - 1 37 - 36 - 1 37 - 1 37 - 1 36 37 1 1 35 - 35 1 1 1 1 1 I | 1 IDIBQ.SI9EM |HQCR ID HIVBt TOVR |RL2m4] 33 * 33 1 33 “ 33 1 1 33 — 1 33 “ 1 32 33 i | 23 - 23 - 1 1 1 - - 1 1 1 1 |mcr H®snon(F DVUHTGW OBVEfOr |RL2nai| 34 - 34 - 33 - 33 1 34 3 34 2 33 _ 34 i 27 _ _ jntv pHHlNUf ffimz |H12RQ2| 34 - 34 - 34 - 33 2 34 1 34 1 33 _ 34 l 28 _ 28 1 j n w jST. O E I K R BODGE (R12F0031 34 - 34 - 34 - 34 5 34 4 34 1 34 _ 34 3 2B _ 28 jnNT (GDfffnT'S KH L |H12PQ12| 22 - 22 - 22 - 22 - 22 2 22 - 20 _ 22 1 16 _ 16 — junr |TO ERUXXS |KL2F004| 39 - 39 - 39 - 38 8 39 4 39 - 39 — 39 4 35 _ 36 — 10.9 Appendix |n«v lECVQLND KQXE |H12K)05| 37 - 37 - 37 - 37 4 37 2 37 - 3S _ 37 3 27 _ 27 jure |noRUi amre |m2P013| 21 - 21 - 22 - 22 - 22 - 22 - 20 — 21 1 16 _ 16 _ j DO T |EE7tS NH L BQ H £ [K12F006| 39 — 39 ** 38 ~ 38 “ 39 - 39 ~ 38 - 39 4 35 - 35 - 1 1 1 I IfoicHrvmBi pRXfflBOlXZ [RL2FQ10| 36 - 36 - 36 - 36 3 35 2 36 - 34 _ 36 1 22 _ 22 jlflKlir VK K R p c a N f w o a n z |R12P007| 34 - 34 - 34 - 34 2 34 _ 34 _ 28 _ 34 _ 28 1 28 iHHCNr WOSt f D o a o n s s [RL2F006 j 39 — 39 — 39 - 39 3 39 1 39 - 38 - 39 1 36 36 1 1 1 1 lio u a r buck Il n i x m e g a n g (RL2ESG6I - - 23 23 23 - 23 - 23 3 23 1 23 - 23 5 19 - 19 - tvaxiM j rivers muhkzet — suH icsr hqhv 1990 river want om jiy a/ssrrKJtnm l i m n CP SV f U S (N) ttD tUGER CF SWHiS QHXH S B W K O (F) a a O M N T : T O W (13)

fTbtal Ammia fUuai. Amuiia S^olicb Total Zinc p d w (Reach vfstnaa of | u a r ffl latex Tfcnpwstura DO (%) KX> (ADJ) I | Ref. I Huber H F S F N F H F H F R F R F I I

L. 21 21 21 I f IT liara b c c k |LH€UE ERISGE |B12Xa7 21 21 21 21 21 jlCHUY BCCK. jicMBrmmz (S12ED06 40 40 40 40 40 40 40 40 35 36 I______|I2D (A386 HMHOQZ OnOO IKL2F012 33 33 33 33 33 33 15 33 26 26 | LSD |<3f&tANB5 m um [r l s o j i 41 41 41 41 41 41 34 41 31 31 jl2D jssmnmBanz |R12FQU 33 33 33 32 33 33 28 33 30 30 |DZD juPKK ERUSC |KL2TX)2 41 41 41 41 41 41 39 41 35 35 32 26 (qurncR b c c k IHOJCR ID RTWR OS) p02>ai3 32 32 32 32 I______.1______34 “T |Lar |>him. g^uw gmoro (f) CRrOfOir: TJM® (U)

[Avar [Itarti ifstmn at I I jH Lower SH tftw | Ttaperaturo CD <%) | a n inu) flb ta l Z im in [tlrLcn. Ansxiia| S Jo U A | Tbt&l Otfpar itotal Sine | I I | 1 1 1 1 1 I | nubor) HFR F 1 N FR F 1 N F 1 I* F 1 N F | R F 1 ft FR F | I I I 1 1 1 1 1 I I I 1 1 1 1 1 I I I 1 1 1 1 1 * I I I 1 1 1 1 1 I I I I I I I I I I I I I I p fra ro m iH t | HHCTO |RL2fiG6| 32 “ 32 ” 1 32 — 32 3 1 32 1 1 32 1 1 32 32 6 1 29 — 29 ■ | I I I 1 | 1 1 I fanner (ansHMM iiL |HL3C04| 34 - 34 - 1 34 - 34 - 1 34 2 1 34 2 1 » 34 2 1 33 1 3* - j jan so r fneaic Bans |mM05| 34 - 34 - 1 34 - 34 - 1 34 1 1 34 - 1 34 - | 34 1 1 33 - 33 - | |onsv lanaannMst Bans pO20H| 34 - 34 - 1 34 - 34 - 1 34 1 1 34 - 1 33 - | 34 1 1 34 - 34 - | |unuY |Hzi£9aoar am zE p o a a B f 39 - 39 - 1 39 - 39 - 1 39 - 1 39 - 1 38 - | 39 3 | 36 - 36 - | |uru2v lY B xm nzz P02C06I 34 - 34 - 1 34 - 34 - 1 34 - 1 34 - 1 33 “ 1 34 2 { 34 - 34 - | jan n cf im tH n L B an K P02C07I 33 33 — 1 32 “ 32 1 33 — 1 33 — 1 30 33 1 1 33 33 - | I I I I 1 1 I 1 1 |BZ£S0XX3E v a s t 1200 je o t s xys ar m naro sans |KLMU2| 32 — 32 — 1 31 — 31 3 1 32 4 1 32 2 1 31 32 8 1 29 29 ■ | I I I I 1 1 I 1 { lauxzanncasR laUXFMf HODGE |Ri»m)| 31 - 31 - 1 32 - 32 - 1 32 - 1 32 - 1 31 - | 32 2 1 29 - 29 - | lausaaHrwara | HOIK TO RIVER (JI'ISB p a a c n i 32 “ 32 ~ 1 32 — 32 — 1 32 — 1 32 — 1 31 32 4 1 29 29 - | I I I I { 1 I 1 I |a«MZQHr m s t |ITOER TO RIVER CUIUCT jm a a tti 34 “ 34 — 1 34 — 34 ~ 1 34 1 1 34 — 1 34 34 } 1 27 27 1 | I I I I I 1 I 1 1 IWAVPaXH IBUUEHJW {10230061 36 “ 36 — 1 36 36 2 1 % 1 1 36 ” 1 34 * 2 1 31 31 1 | I I I 1 I 1 I 1 ( |u h lxm b |uhk Bacas JHUX»5| 34 35 1 M — 34 2 1 3S 4 1 34 12 1 33 3* S 1 31 “ 31 — I I I 1 1 1 1 1 1 | an r l a j t r s a n s IHL2C16I 37 - 37 - 1 36 - 37 2 1 37 2 1 37 2 1 3* J 1 2 1 3* - 36 - | | a w laJWCR BR3DCE |H13001| 38 - 38 - 1 38 - 38 1 1 38 1 1 38 1 1 38 - | 38 1 1 37 - 37 - | | a w flKllUlT UUUGB pOSX&l 42 — 42 — 1 *2 - 42 5 1 42 1 1 42 1 1 42 — | 42 5 1 33 3) - 1 I I 1 1 I I I |oza |RQXH BUZJX (1020031 41 - 41 - 1 41 - 41 2 1 41 1 1 41 2 1 41 - | 4 l 3 1 34 34 - | |CEER |NLTUlirr BQKB |K12804| 41 - 41 - 1 41 - 41 - 1 41 - 1 41 - 1 41 - | 41 2 1 34 - 34 - j |BXR [n ra UdlUi (R120C6I 42 ” 42 1 43 "" 43 2 1 42 1 1 42 ” 1 42 42 2 1 35 35 ■ | I I 1 1 1 1 | I 1 |aXE9QlL sascm |ioo w s b s a r cp Hxaamff sw [H12HXJ7| 22 — 22 — 1 22 - 22 - I 22 — 1 22 - 1 22 22 1 1 22 22 * | I I 1 I | I ( \ 1 jltttQL nUB( lOKBOEGB |H12m2j 36 - 36 - 1 36 - 36 - 1 36 2 1 36 1 1 36 6 1 30 - 30 - | |u h u l vker |OH£tKie BODS |M2flC6| 39 39 “ 1 39 39 3 1 39 1 1 39 1 1 38 39 4 1 31 31 ■ |

I I 1 1 I | 1 \ 1 10.9 Appendix ISW4LBCCK |HQ«XX)BaiXS |R12LD11| 40 - 40 - | 40 - 40 5 1 40 4 1 40 4 1 40 «* 1 32 - 32 - | |SML BOCK p n u x u BODGE pa2U]08| 37 37 — 1 37 — 37 2 1 37 4 1 37 6 1 % 37 4 1 31 31 - I I I 1 1 1 | I 1 I |KHA pozm oi 41 - 41 - I 41 - 41 1 1 41 - 1 41 - 1 41 - | 41 i 1 32 - 32 - j IU9B8KLWOS iKSEmi KUD BODGE 11020X71 37 — 37 — { 37 — 37 2 1 37 2 1 37 1 1 37 37 s 1 33 33 | I I 1 1 1 1 1 1 I NATIONAL RIVERS AUTHORITY - SOUTH WEST REGION 1990 RIVER MATER QUALITY CLASSIFICATION PERCENTAGE EXCEEDENCE OF DETERMINAND STATISTICS FROM QUALITY STANDARDS CATCHMENT: TAMAR (13)

|River |Reach upstream of User | PERCENTAGE EXCEEDENCE OF STATISTIC FROM QUALITY STANDARD 1 Ref. | 1 1 1 1 1 1 Number| pH Lower ( pH Upper |Temperature| DO (%) | BOD (AXU)| Total Un-ionised Suspended | Total | Total 1 1 1 1 1 1 A m o n i a Amaonia Solids j Copper j Zinc 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 |TAMAR (BUSES BRIDGE R12L001| - ( 1 - | - | -- | - j |TAMAR (UPPER TAMAR LAKE R12L017] - | | - | 20 12 | -- | - | (TAMAR (LOWER TAMAR LAKE R12L018( - | 1 - | - | -- | - | |TAMAR (FOOTBRIDGE BELCW LOWER TAMAR LAKE R12L009| - | 1 ~ | - | -- ( - | (TAMAR |DEXBEER BRIDGE R12L006( - | 1 - | - | -- | - | (TAMAR (MORETOH MILL R12L016| - ( 1 - | - ( - - 2 | - 1 (TAMAR (TAMARSTOflE BRIDGE R12L002( - ( 1 - | 19 16 | -- | - | (TAMAR (BRIDGERULE R12L015| - ( ( - | - | -- ( - | (TAMAR (CROWFOfRD BRIDGE R12L003| - ( ( - | - 77 | 20 - | - | |TAMAR (TAMERTON BRIDGE R12L004( - 1 ( - | - 69 | -- ( - | (TAMAR | BELOW CONFLUENCE WITH RIVER DEER R12L013| - ( ( - | - 2 1 -- 68 ( - ( (TAMAR | BOSTON BRIDGE R12J001( - ( 1 - | 23 28 | -- 7 ( - | (TAMAR |DHUXTOT BRIDGE R12J002| - ( ( - | 35 104 ( -- 28 | - | | TAMAR |NETHERBRIDGE R12J003| - ( ( - | - 53 ( -- 23 | - | - - - (TAMAR |POLSON BRIDGE R12J004( ( 1 ~ 1 - 14 ( - 44 | | | TAMAR IGREYSTONE BRIDGE R12E001) - I ( - | - 32 ( -- 61 | - | (TAMAR(HORSEBRIDGE R12E002| - | ( - | - | - - 25 | - | (TAMAR (GUNNISLAKE BRIDGE R12E003| — 44 | “ 32 | | * 1 1 1 1 1 |BLAKCHDOWN STREAM |PRIOR TO RIVER TAMAR R12E004( — ~ ■ I | “ 1 1 1 1 1 IPORTOWTOMW STREAM (GRENOVEN WOOD R12E015( — 1 — — ■ | | " 1 1 1 1 1 |LATCHLET BROOK |LATCBLEY R12E028| — — — " | 627 ( 160 1 1 1 1 1 | LUCKETT (OLEKILL R12E016| - ( 1 “ 1 - (- - ( - ( (LUCKETT |LUCKETT BRIDGE R12E007| — ~ — ■ | I ■ 1 1 1 1 1 |DAMEREL STREAM (PRIOR T O RIVER TAMAR R12E014( — " 1 1 1 1 1 1 1 IZHNY |UPSTREAM OF DAVIDSTOW CREAMERY R12P001( - ( 1 ~ 1 5 20 j 64 - - | - | |IOTY ITREWIKNCW BRIDGE R12P002| - ( 1 - | 5 12 ( -- 1 - | ( r a n |ST. CLETHER BRIDGE R12P003| - ( 1 - | 16 59 | 8 - | - 1 (INNY |GIMBLETT'S KILL R12P012| - | 1 ~ 1 - 32 | -- | - ( (INNY (TWO BRIDGES R12P004| - ( 1 ~ 1 21 13 ( -- | - ( | INNY (TREKELLAHD BRIDGE R12P00S( - | ( - | 10 5 1 -- ( - ( | INNY ITRECARRELL BRIDGE R12P013| - | 1 ~ 1 - ( -- - | - I | INNY |BEALS MILL BRIDGE R12P006| — — “ "■ [ | " 1 1 1 1 1 |PENPorrr w a t e r (TRELXN BRIDGE R12P010| - ( ( - | 21 14 | - - ( - ( |PENPORT WATER (ALTARNUN BRIDGE R12P007| - ( ( - | 5 ( - - | - ( | PENPONT WATER (TWO BRIDGES R12P008| — 8 • | | “ l " 1 1 1 1 |LOWLEY BROOK (LAHDLAKE BRIDGE R12E00S| - I 1 ~ 1 - 72 | - - 26 | - ( - RATIONAL RIVERS AUTHORITY - SOUTH WEST REGION 1990 RIVER WATER QUALITY CLASSIFICATION PERCENTAGE EXCEEDENCE OP DETERMINAND STATISTICS FROM QUALITY STANDARDS CATCHMENT: TAMAR (13)

(River (Reach upstream of | User | PERCENTAGE EXCEEDENCE 0T STATISTIC FROM QUALITY STANDARD 1 1 R ® f - 1 1 1 1 1 i i I j Numberj pH Lower 1 pH Upp«r (Temperature| DO <*) BOD (ATU) | Total Un-ioniaed Suspended j Total 1 Total j 1 1 1 1 1 1 | Aanonia Ammonia Solids j Copper | Zinc j 1 1 1 1 1 1 1 1 I ( 1 1 1 1 1 1 I « 1 1 I 1 1 1 1 1 1 1 ILQMLEY BROOK ILANDUE BRIDGE |R12E017| - 1 | - | - 24 | - - | - 1 - | (IjOWLEY BROOK (LOMLEY BRIDGE (R12E006| — — - - - | — 1 1 1 1 1 1 1 1 |LYD |A386 RQAD8RIDGE LYDFORD |R12F012| - 1 1 - j - | - - | - 1 - | (LTD (GREENLANES BRIDGE |R12F001| - 1 t ~ 1 - | - - ( - 1 - | | LYD (SYDENHAM BRIDGE IR12F011| - 1 ( - | - ( -- | - 1 “ | | LYD (UPTON BRIDGE |R12F002| — — — - ( 1 1 1 1 1 1 1 1 1 IQUTTHER BROOK |PRIOR TO RIVER LYD (R12F013| — — — - | 1 1 1 1 1 1 1 1 1 (LEW |COMBEBOW BRIDGE |R12F003| - 1 ( - | - (- - | - 1 - | |LEW |PRIOR TO RIVER LYD |R12F004| — - — - | 1 1 1 1 1 1 1 1 1 (COMBEBOW STREAM |ROAD CULVERT REAR COMBEBOW QUARRY|Rl2T010| — —— " ( “ 1 1 1 1 1 1 |THRUSHEL IRIVERMEAD BRIDGE (R12G0011 - 1 1 - | --- 1 - 1 " 1 (THRUSHEL |WRIZHILL BRIDGE |R12G002( - 1 1 - | - 1 - - | - 1 - | |THRUSHEL |STOWFORD BRIDGE |R12G003| - 1 1 - | - ( 30 45 - | - 1 - | (THRUSHEL |TINHAY BRIDGE (R12G004| — - - - - 1 - 1 I 1 1 1 1 1 1 1 IBHEAZLE WATER |PRIOR TO RIVER THRUSHEL (R12G010| — “ ■— “ — | 1 1 1 1 1 1 1 1 1 jBRATTON BROOK | BRATTON CL0VELLY (R12G009| — — -- - 1 - 1 1 1 1 1 1 1 1 1 |*OLF |WEEK'S MILL BRIDGE (R12G005| -- | -- | 6 1 “ 1 (WOLF IREXON BRIDGE |R12G006| - 1 1 “ 1 - | - - 1 - 1 - | (WOLF |PRIOR TO RIVER THRUSHEL |R12G007| -- - I — 1 t 1 1 I 1 1 1 1 |BROADWOOD BROOK |KKUACOTT BRIDGE [R12G012| — - | - 1 1 1 1 1 1 1 1 1 |KENSEY |BADGALL BRIDGE - 1 - - __ _ | _ |R12K003| 1 i* 1 IKESSE7 IBACRARLICX BRIDGE |R12R001| - 1 - ( - | — 21 ( __ _ I |KERSEY |TRUSCOTT BRIDGE |R12N004| - 1 1 - ( - 24 | 7 _ _ | 1 — | - _ |KENSEY |NEWPORT |R12N00S| I - 1 - 1 59 | _ 7 1 1 — I jKENSEY |ST. LEONARDS BRIDGE |R12N002| — — 7 | - - | - 1 1 I 1 1 1 1 1 1 (TREGEARE STREAM |RED DGMN BRIDGE (R12R006| — ~ 31 - - | - 1 1 1 1 1 1 1 1 t |CAREY |HAUfILL BRIDGE - QUODITCH |R12H006| - 1 1 - | 10 101 | 147 - j - |CAREY |ASHMILL BRIDGE |R12H001( - ( 1 ~ | 24 49 | 14 - | 1 — 1 |CAREY (MIDDLE BRIDGE VIRGINSTOW |R12H007| - 1 1 - | _ 6 1 _ _ _ | 1 — 1 |CAREY - _ (TCMERHILL BRIDGE |R12H003| I 1 * 1 25 4 ( _ _ | 1 — 1 (CAREY (BOLDFORD BRIDGE |R12H008| - 1 1 - | _ 80 _ _ | 1 — | |CAREY |HEALE BRIDGE |R12H002| - 1 1 “ 1 - | -- | - 1 - 1 NATIONAL RIVERS AUTHORITY - SOUTH WEST REGION 1990 RIVER HATER QUALITY CLASSIFICATION PERCENTAGE EXCEEDENCE OF DETERMINAND STATISTICS FROM QUALITY STANDARDS CATCHMENT: TAMAR (13)

|River |Reach upstream of User | PERCENTAGE EXCEEDENCE OF STATISTIC FROM QUALITY STANDARD 1 1 Ref. | 1 1 1 1 1 Number) pH Lower | pH Upper |Temperature! DO (%) BOD (ATU)| Total (lb-ionised Suspended j Total Total | 1 1 1 1 | Aaaonia Amaonia Solids j Copper Zinc j 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 I 1 1 1 1 1 1 1 1 (HENFORD MATER |HENFORD R12H005| | “ 16 — - | ■ | 1 1 1 1 1 |OTTERY |OTTERHAM MILL R12M004| - | 1 - | - 25 j 75 - | - 1 | OTTERY [TRENGUNE BRIDGE R12K005| - | 1 - | -- - | - | |OTTERY ICANHDRTHY MATER BRIDGE R12M001| - | 1 - | - 1 - - | - | | OTTERY IHELLESCDTT BRIDGE R12M0021 - | 1 - | - | -- | - j | OTTERY IYEOU1BRIDGE R12M006| - | 1 - | - | -- | - j (OTTERY (HAM MILL BRIDGE R12M007I | — ~ — — ■ | “ ■ | 1 1 1 1 1 jBOLESBRIDGE WATER |200 METRES D/S OF NAVARINO BRIDGE RI2M012| 1 ~ 32 220 | 139 — — | - | 1 1 1 1 1 ICADTMQRTHY WATER |CAUDWDKTHY BRIDGE R12H010| - | 1 “ 1 - 1 -- i - | | CAJUDWOHTHY MATER [PRIOR T O RIVER CT1TERX R12H011] [ " * i “ * 1 1 1 1 1 1 ICARWORTHY MATER | PRIOR TO RIVER OTTERY R12M008| I - 42 | — “ ] 1 1 1 1 1 |TALA HATER |BRIDGETOWN R12J006| — t — 7 *“ — | — - | 1 1 1 __ 1 1 |LANA LAKE (LANA BRIDGE R12J00S| I 11 39 | U - - | - I " 1 1 1 1 1 | CLAW |CLAM BRIDGE R12K016| - j - 1 - I 23 8 1 44 - I - j | C L W ICLMfTON BRIDGE R12K001| - | - 1 - I _ 2 - _ 1 _ - | | C U W |TETCOTT BRIDGE R12K002| — 1 ■ 45 -- I - | 1 1 1 1 1 |DEER |RYDON BRIDGE R12K003| - 1 - t - | 11 - J -- j - - j |DEER IMXRSCDTT BRIDGE R12K004| - | - 1 - 1 _ - | — - I - - I |DEER |DEER BRIDGE R12K005| — I - S -- - | - ) 1 1 1 1 1 |COLESMILL STREAM |100 METRES BELOW OF BOLSWORTHY ST R12K007| I ~ — — - | — - j 1 1 1 1 1 [DERRIL MATER |DUX BRIDGE R12L012| - | - 1 - | - 38 j — _ _ j _ _ j |DERRIL MATER IDUALSTONE BRIDGE R12L005| — 1 — 20 ~ - - I - I 1 1 1 1 1 | SMALL BROOK IHEADOH BRIDGE R12L011| - | 1 - | 10 46 1 127 - 1 - - | |SMALL BROOK jYOULDOW BRIDGE R12L008| - 1 — 17 76 | 161 - - | - “ 1 1 1 1 1 t LAMBERAL MATER (FORDA R12L010| - J - 1 - | - - I -_ _ j _ _ | ILAMBERAL MATER InORETON POUND BRIDGE R12L007| | ■* 5 4 I -- - | - - 1 1 1 1 1 NATIONAL RIVERS AUTHORITY - SOUTH WEST REGION IDENTIFICATION OP POSSIBLE CAUSES OP NON-COMPLIANCE WITH RQO CATCHMENT: TAMAR (13) * a WORK ALREADY IN HAND

|1990 Map River | Reach upstream of User Reach Possible causes of non-compliance 1 |Position 1 Reference Length 1 | Number 1 Runber (km) 1 1 1 1 1 1 1 1 1 1 1 1 | 2 TAMAR | UPPER TAMAR LAKE R12L017 1.7 FARMING ACTIVITIES, LAND RUN-OFF, BLUE-GREEN ALGAE 1 1 « TAMAR | M0RE70N MILL R12L016 1.8 LAND RUN-OFF, FARMING 1 | 7 TAMAR | TAMARSTONE BRIDGE R12L002 4.5 LARD RUN-OFF, DROUGHT 1 1 9 TAMAR | CROWFORD BRIDGE R12L003 5.4 LAND RUN-OFF, UNKNOWN POINT SOURCE, FARMING ACTIVITIES 1 1 TAMAR | TAMEHTON BRIDGE R12L004 5.1 FARMING ACTIVITIES, LAND RUN-OFF 1 1 11 TAMAR | BELOW CONFLUENCE WITH RIVER DEER R12L013 0.3 FARMING ACTIVITIES 1 1 12 TAMAR | BOYTOn BRIDGE R12J001 7.0 FARMING ACTIVITIES, DROUGHT 1 1 13 TAMAR | DRUXTON BRIDGE R12J002 5.9 FARMING ACTIVITIES 1 1 K TAMAR | NETHERBRIDGE R12J003 1.9 LAND RUN-OFF, POLLUTION, rARMING ACTIVITIES 1 1 is TAMAR | » POLSOH BRIDGE R12J004 2.5 LAND RUN-OFF, SEWAGE TREATMENT WORKS, FARMING ACTIVITIES 1 1 IS TAMAR | GREYSTQRE BRIDGE R12E001 6.6 LAND RUN-OFF, PARKINS ACTIVITIES 1 1 17 TAMAR | HORSEBRIDGE R12E002 11.9 LAND RUN-OFF, CATCHMENT GEOLOGY, FARMING ACTIVITIES 1 1 IB TAMAR | GUNNISLAKE BRIDGE R12E003 9.0 LAND RUN-OFF, UP-STREAM ABSTRACTIONS, CATCHMENT GEOLOGY, SEPTIC TANKS, PARKING ACTIVITIES| 1 1 1 1 20 PORTONTOMN STREAM | GRENOVEN MOOD R12E015 S.6 CATCHMENT GEOLOGY 1 1 1 1 1 21 LATCHLCY BROOK | LATCHLEY R12E028 1.7 LAND RUN-OFF, MINING, CATCHMENT GEOLOGY 1 1 1 1 25 INNY | UPSTREAM OP DAVIDSTOW CREAMERY R12P001 1.4 LAND RUN-OFF, UNKNOWN POINT SOURCE, CATCHMENT GEOLOGY, FARMING ACTIVITIES 1 1 26 INNY | TREWIRNOW BRIDGE R12P002 2.0 LAND RUN-OFF, UNKNOWN POINT SOURCE, INDUSTRIAL DISCHARGE, FARMING 1 1 27 INNY | ST. CLE1HER BRIDGE R12P003 4.7 LAND RUN-OFF, FARMING ACTIVITIES, KURLAND, INDUSTRIAL DISCHARGE 1 1 28 INNY | GIMBLETT'S MILL R12P012 4.5 LARD RUN-OFF, AFORESTATIOH, EUTROPHICATION, FARMING ACTIVITIES 1 1 29 INNY | TWO BRIDGES R12P004 4.3 LARD RUN-OFF, PARKINS ACTIVITIES 1 1 30 INNY | TREKELLAND BRIDGE R12P005 4.3 LAND RUN-OFF, CULVERTING 1 1 1 1 1 33 PENPOOT WATER | TRELYN BRIDGE R12P010 4.0 LARD RUN-OFF, DROUGHT, FARMING ACTIVITIES 1 1 34 PKNPONT WATER | ALTAHNUN BRIDGE R12P007 3.7 LAND SUN-OFF, DROUGHT, URBANISATION 1 1 35 PENPOWT WATER | TWO BRIDGES R12P008 7.1 LARD RUN-OFF, DROUGHT, POLLUTION 1 1 1 1 1 35 LOWLEY BROOK | LANDLAKE BRIDGE R12E005 3.7 LARD RUN-OFF, URBANISATION, STORM OVERFLOWS 1 37 LCWL£Y BROOK | LANDUE BRIDGE R12E017 4.0 LARD KUR-0FF, URBANISATIOH 1 1 1 1 | 49 THRUSHEL | STOWFORD BRIDGE R12G003 5.9 LAND RUN-OFF, FARMING ACTIVITIES 1 1 1 1 KOI/ | WEEK’S MILL BRIDGE 1 53 R12G005 3.8 LAND RUN-OFF, CATCHMENT GEOLOGY 1 10.11 Appendix 1 1 1 1 57 KERSEY | BADGALL BRIDGE R12R003 2.4 LAND RUN-OFF, MOORLAND ORIGINS 1 1 5B KENSEY | BAEHARLXCK BRIDGE R12N001 4.2 LAND RUN-OFF, MOORLAND ORIGINS, FARMING ACTIVITIES 1 1 59 KENSEY | TRUSOOTT BRIDGE R12R004 4.0 LARD RUN-OFF, STOKE TREATMENT WORKS 1 | 60 KENSEY | NEWPORT R12R005 3.3 LARD RUN-OFF, URBANISATION 1 1 61 KERSEY | ST. LEONARDS BRIDGE R12N002 2.8 LARD RUN-OFF, STORM OVERFLOW 1 1 1 1 1 « TREGEARE STREAM | RED DOWN BRIDGE R12N006 3.4 LARD RUN-OFF, CATCHMENT GEOLOGY, FARMING ACTIVITIES 1 1 1 1 NATIONAL RIVERS AUTHORITY - SOUTH WEST REGION IDENTIFICATION OF POSSIBLE CAUSES OF NON-COMPLIANCE WITH RQO CATCHMENT: TAMAR (13) * = WORK ALREADY IN HAND

{1990 Map River | Reach upstream of User Reach Possible causes of non-compliance { [Position 1 Reference Length 1 | Number 1 Number (km) 1 1 1 1 1 1 \ | 63 CAREY | HAUfILL BRIDGE - QUODITCH R12H006 3.6 LAND RUN-OFF, AFORESTATIOR, FARMING ACTIVITIES, SEPTIC TANK | 1 64 CAREY | ASHMILL BRIDGE R12H001 4.7 UND RUN-OFF, FARMING ACTIVITIES, SEPTIC TANKS, CATCHMENT GEOLOGY j 1 65 CARET | MIDDLE BRIDGE VIRGINSTOW R12H007 4.0 LAND RUN-OFF, DROUGHT, FARMING ACTIVITIES | | 66 CAREY j TOWERHILL BRIDGE R12H003 2.4 U N D RUN-OFF | 1 67 CAREY | BOLDFORD BRIDGE R12H008 2.7 LAND RUN-OFF, DROUGHT, FARMING ACTIVITIES j 1 1 1 69 HENFORD WATER | HENFORD R12H005 4.3 DROUGHT, LAND RUN-OFF, FARMING ACTIVITIES, CATCHMENT GEOLOGY | 1 1 1 70 OTTERY | OTTERHAM MILL R12M004 6.0 LARD RUN-OFF, FARMING ACTIVITIES, CATCHMENT GEOLOGY | 1 1 1 76 BOL£SBRIDGE WATER | 200 METRES D/S OF NAVARINO BRIDG R12K012 8.0 DROUGHT, LARD RUN-OFF, FARMING ACTIVITIES, CATCHMENT GEOLOGY | 1 1 1 79 CANNDRTHY WATER { PRIOR T O RIVER OTTERY R12M008 4.8 LAND RUN-OFF, FARMING ACTIVITIES, CATCHMENT GEOLOGY | 1 1 | 80 TALA WATER | BRIDGETOWN R12J006 9.3 DROUGHT, SEPTIC TANK | 1 1 1 ®1 LANA IAKE | LARA BRIDGE R12J005 3.1 DROUGHT, LAND RUN-OFF, FARMING ACTIVITIES, C M O W f l g GEOLOGY |

1 ______...... 1 1 ®2 CLAW | CLNf BRIDGE R12K016 4 .2 DROUGHT, FARMING ACTIVITIES, LARD RUN-OFF, CATCHMENT GEOLOGY | j 83 CLNK j CUMT O R BRIDGE R12K001 2.9 LAND RUN-OFF, FARMING ACTIVITIES j I <4 CLNf j TGTOOTT BRIDGE R12K002 4.3 DROUGHT, FARMING ACTIVITIES, CATCHMENT GEOLOGY | 1 1 1 85 DEER | RYDON BRIDGE R12K003 6.8 DROUGHT, URBANISATION | 1 87 DEER j DCER BRIDGE R12K005 6.0 DROUGHT, URBANISATION j 1 1 | 89 DERRIL WATER | DUX BRIDGE R12L012 2.7 LARD RUN-OFF, FARMING ACTIVITIES, CATCHMENT GEOLOGY | | 90 DERRIL WATER j DUALSTONE BRIDGE R12L005 2.5 DROUGHT, CATCHMENT GEOLOGY { 1 1 1 91 SMALL BROOK | HEADON BRIDGE R12L011 3.7 LARD RUN-OFF, DROUGHT, FARMING ACTIVITIES, CATCHMENT GEOLOGY { | 92 SMALL BROOK j YOULDON BRIDGE R12L008 2.S CATCHMENT GEOLOGY, FARMING ACTIVITIES, LARD SUN-OFF | 1 1 1 94 LAMBERAL WATER | MDREION FOUND BRIDGE RI2L007 3.2 LAND RUN-OFF, DROUGHT, CATCHMENT GEOLOGY, FARMING ACTIVITIES |

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