Upper Clyst Water Body Moderate ecological status
Attributes Water Body ID GB108045008860 Water Body Type River Hydromorphological designation not designated artificial or heavily modified NGR SY0234398402 Catchment area 6513.013 ha Length 28.809 km Surveillance Water Body No Catchment area 65.13 km2 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 Poor Phosphate Poor Temperature High pH High Hydromorphological Supporting Elements Supports good Hydrological Regime Supports good Morphology Supports good Specific pollutants High 2,4-dichlorophenoxyacetic acid High Copper 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 Diffuse source Poor Livestock Management Agriculture and rural land management Dissolved oxygen Details RNAG Natural Drought No sector responsible Dissolved oxygen Details RNAG Physical modification Barriers - ecological discontinuity Agriculture and rural land management Fish Details RNAG Diffuse source Poor Livestock Management Agriculture and rural land management Fish Details RNAG Diffuse source Poor Livestock Management Agriculture and rural land management Fish Details RNAG Natural Drought 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 RNAG Diffuse source Poor Livestock Management Agriculture and rural land management Phosphate 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 1 0 0 0 0 4 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 0 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 0 0 0 0 0 0 0 No sector responsible 0 0 0 0 0 0 0 Sector under investigation 0 0 0 0 0 0 0 Total 1 0 0 0 0 4 0
Objectives Classification Item Status Year Reasons Ecological Good 2027 - Low confidence Disproportionately expensive: Disproportionate burdens Biological quality elements Good 2027 - Low confidence Disproportionately expensive: Disproportionate burdens Fish Good 2027 - Low confidence Disproportionately expensive: Disproportionate burdens Invertebrates Good 2015 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 2027 - Low confidence Disproportionately expensive: Disproportionate burdens 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 2,4-dichlorophenoxyacetic acid High 2015 Copper 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 Mid Devon G18 Nitrates Directive CLYST NVZ S536 Nitrates Directive AYLESBEARE STREAM NVZ S535 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 EXE/TIDAL EXE/RIVER CLYST/POLTIMORE STREAM/POLTIMORE HOUSE (SP)/ 9711 2012, 2009, 2010, 2013, 2011 9352 9352 2014, 2009 2016, 2014, 2015 98261 98261 2014, 2013, 2009 2013, 2016, 2014, 2015 159686 159686 2016, 2014 RIVER CLYST AT CLYST ST LAWRENCE 70522671 2009, 2014, 2013 2014, 2015, 2019, 2013, 2016 2019 5M U/S BRIDGE CLYST HYDON 70522683 2009 2015, 2019, 2016 2019 EXE/TIDAL EXE/RIVER CLYST/MAIN CLYST/ASHCLYST FARM (SP)/ 9708 2012, 2009, 2010, 2013, 2011, 2014 2019, 2015, 2013, 2016, 2014 2019 RIVER CLYST AT A38 BRIDGE BROADCLYST 70522649 2009 2015, 2019, 2016 2019 EXE/TIDAL EXE/RIVER CLYST/MAIN CLYST/CLYST HONITON (SP)/ 9539 2019, 2015, 2016 2019 9375 9375 2014, 2009 2016, 2014, 2015 EXE/TIDAL EXE/RIVER CLYST/PINN BROOK/MOSSHAYNE (SP)/ 9717 2012, 2009, 2010, 2013, 2011, 2014 2019, 2015, 2013, 2016, 2014 2019 RIVER CLYST AT A30 BRIDGE CLYST HONITON 70522630 2015, 2016 RIVER CLYST AT ASHCLYST FARM 70522662 2009 2015, 2019, 2016 2019