Boyd - source to conf R Avon (Brist) Water Body Moderate ecological status
Get Boyd - source to conf R Avon (Brist) data Attributes Water Body ID GB109053027510 Water Body Type River Hydromorphological designation not designated artificial or heavily modified NGR ST7229876653 Catchment area 48.782 km2 Surveillance Water Body No Length 21.794 km Catchment area 4878.181 ha Classifications Classification Item 2019 Ecological Moderate Biological quality elements Moderate Fish Moderate Invertebrates Good Macrophytes and Phytobenthos Combined Good Macrophytes Sub Element Good Physico-chemical quality elements Moderate Ammonia (Phys-Chem) High Dissolved oxygen High Phosphate Poor Temperature High pH High Hydromorphological Supporting Elements Supports good Hydrological Regime Supports good Morphology Supports good Specific pollutants High Iron High Zinc High Chemical Fail Priority hazardous substances Fail Benzo(a)pyrene Good Dioxins and dioxin-like compounds Good Heptachlor and cis-Heptachlor epoxide Good Hexabromocyclododecane (HBCDD) Good Hexachlorobenzene Good Hexachlorobutadiene Good Mercury and Its Compounds Fail Perfluorooctane sulphonate (PFOS) Good Polybrominated diphenyl ethers (PBDE) Fail Priority substances Good Cypermethrin (Priority) Good Fluoranthene Good Other Pollutants Does not require assessment
Why do all water bodies have a chemical status of fail?
Investigations into classification status No data to show
Reasons for not achieving good (RNAG) and reasons for deterioration (RFD) All reasons (RFDs and RNAGs) attributed to the classification elements in
this water body.
Reason Type SWMI Activity Category Classification Element More information RNAG Point source Sewage discharge (continuous) Water Industry Phosphate Details RNAG Diffuse source Poor Livestock Management Agriculture and rural land management Phosphate Details RFD Suspect data Not applicable No sector responsible Fish Details RNAG Suspect data Not applicable No sector responsible Fish Details RNAG Physical modification Barriers - ecological discontinuity Other Fish Details RNAG Point source Farm/site infrastructure Agriculture and rural land management Phosphate Details RNAG Invasive non-native species North american signal crayfish No sector responsible Fish Details RNAG measures delivered to address reason, awaiting recovery Not applicable No sector responsible Polybrominated diphenyl ethers (PBDE) Details RNAG measures delivered to address reason, awaiting recovery Not applicable No sector responsible Mercury and Its Compounds Details
Reasons for not achieving good status by business sector The issues preventing waters reaching good status and the sectors
identified as contributing to them. The numbers in the table are
individual counts of the reasons for not achieving good status with a
confidence status of 'confirmed' and 'probable', where the latest
classification is less than good status. There may be more than one
reason in a single water body. Note, table does not include reasons for
deterioration.
Significant water management issue Physical modifications Pollution from waste water Pollution from towns, cities and transport Changes to the natural flow and level of water Invasive non-native species Pollution from rural areas Pollution from abandoned mines Agriculture and rural land management 0 0 0 0 0 2 0 Industry 0 0 0 0 0 0 0 Mining and quarrying 0 0 0 0 0 0 0 Navigation 0 0 0 0 0 0 0 Urban and transport 0 0 0 0 0 0 0 Water Industry 0 1 0 0 0 0 0 Local & central government 0 0 0 0 0 0 0 Domestic general public 0 0 0 0 0 0 0 Recreation 0 0 0 0 0 0 0 Waste treatment and disposal 0 0 0 0 0 0 0 Other 1 0 0 0 0 0 0 No sector responsible 0 0 0 0 1 0 0 Sector under investigation 0 0 0 0 0 0 0 Total 1 1 0 0 1 2 0
Objectives Classification Item Status Year Reasons Ecological Good 2027 - Low confidence Disproportionately expensive: Disproportionate burdens Biological quality elements Good 2021 Disproportionately expensive: Disproportionate burdens Fish Good 2015 Invertebrates Good 2021 Disproportionately expensive: Disproportionate burdens Macrophytes and Phytobenthos Combined Good 2015 Physico-chemical quality elements Good 2027 - Low confidence Disproportionately expensive: Disproportionate burdens Ammonia (Phys-Chem) Good 2015 Dissolved oxygen Good 2015 Phosphate Good 2027 - Low confidence Disproportionately expensive: Disproportionate burdens Temperature Good 2015 pH Good 2015 Hydromorphological Supporting Elements Supports good 2015 Hydrological Regime Supports good 2015 Supporting elements (Surface Water) Not assessed 2015 Specific pollutants High 2015 Iron High 2015 Zinc High 2015 Chemical Good 2063 Natural conditions: Chemical status recovery time Priority hazardous substances Good 2063 Natural conditions: Chemical status recovery time Benzo(a)pyrene Good 2015 Dioxins and dioxin-like compounds Good 2015 Heptachlor and cis-Heptachlor epoxide Good 2015 Hexabromocyclododecane (HBCDD) Good 2015 Hexachlorobenzene Good 2015 Hexachlorobutadiene Good 2015 Mercury and Its Compounds Good 2040 Natural conditions: Chemical status recovery time Perfluorooctane sulphonate (PFOS) Good 2015 Polybrominated diphenyl ethers (PBDE) Good 2063 Natural conditions: Chemical status recovery time Priority substances Good 2015 Cypermethrin (Priority) Good 2015 Fluoranthene Good 2015 Other Pollutants Does not require assessment 2015
Protected areas PA Name Id Directive More information Feltham Brook S570 Nitrates Directive
Monitoring sites which have been used to classify this water body Shows which sites were used for classification for which years within
each cycle.
Monitoring Site Cycle 1 Cycle 2 Cycle 3 BRISTOL AVON CATCHMENT/RIVER BOYD/DOYNTON/ 15191 2010, 2011, 2009 159983 159983 2015, 2014, 2013 7735 7735 2009 FELTHAM BK. GATH FM Z3120102 2010, 2013, 2009, 2011, 2014, 2012 174064 174064 2015, 2016 BOYD WICK BRIDGE Z3110101 2013, 2009, 2014, 2012 BRISTOL AVON CATCHMENT/RIVER BOYD/BOYD FARM, GOLDEN VALLEY (COARSE SENTINEL)/ 15303 2010, 2013, 2011, 2009, 2014, 2012 2013, 2016, 2019, 2014, 2015 2019 BRISTOL AVON CATCHMENT/RIVER BOYD/COURT FARM, WICK/ 32995 2010, 2013, 2011, 2014, 2012 2013, 2016, 2019, 2014, 2015 2019 7697 7697 2009 161253 161253 2014 2015, 2016, 2019, 2014 2019 R.BOYD AT BITTON M Z3110110 2010, 2013, 2009, 2011, 2014, 2012 2013, 2016, 2019, 2014, 2015 2019 CODRINGTON STM- HINTON Z3110201 2015, 2016