Darwen - headwaters to conf Davy Field Bk Water Body Moderate ecological status
Get Darwen - headwaters to conf Davy Field Bk data Attributes Water Body ID GB112071065240 Water Body Type River Hydromorphological designation heavily modified NGR SD6887523967 Catchment area 17.683 km2 Surveillance Water Body No Length 9.185 km Catchment area 1768.339 ha Classifications Classification Item 2019 2022 Ecological Moderate Moderate Biological quality elements Poor Poor Fish Moderate Moderate Invertebrates Poor Poor Macrophytes and Phytobenthos Combined Moderate Moderate Macrophytes Sub Element Moderate Moderate Phytobenthos Sub Element Moderate Moderate Physico-chemical quality elements Moderate Good Ammonia (Phys-Chem) Good Good Dissolved oxygen High High Phosphate Moderate Good Temperature High High pH High High Supporting elements (Surface Water) Moderate Moderate Mitigation Measures Assessment Moderate or less Moderate or less Specific pollutants High High Copper High High Chemical Fail Does not require assessment Priority hazardous substances Fail Does not require assessment Benzo(a)pyrene Good Di(2-ethylhexyl)phthalate (Priority hazardous) 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 Nonylphenol Good Perfluorooctane sulphonate (PFOS) Good Polybrominated diphenyl ethers (PBDE) Fail Priority substances Good Does not require assessment Cypermethrin (Priority) Good Diuron Good Fluoranthene Good Other Pollutants Does not require assessment Does not require assessment
Why do all water bodies have a chemical status of fail?
Investigations into classification status Classification Element Cycle Year Status Outcome Phosphate 2 2015 Moderate
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 measures delivered to address reason, awaiting recovery Not applicable No sector responsible Polybrominated diphenyl ethers (PBDE) Details RNAG Point source Sewage discharge (continuous) Water Industry Invertebrates Details RNAG Point source Sewage discharge (intermittent) Water Industry Macrophytes and Phytobenthos Combined Details RNAG Physical modification Barriers - ecological discontinuity Other Fish Details RNAG measures delivered to address reason, awaiting recovery Not applicable No sector responsible Mercury and Its Compounds Details RNAG Physical modification Other (not in list, must add details in comments) Urban and transport Mitigation Measures Assessment Details RNAG Physical modification Other (not in list, must add details in comments) Local and Central Government Mitigation Measures Assessment Details RNAG Physical modification Other (not in list, must add details in comments) Water Industry Mitigation Measures Assessment Details RNAG Point source Sewage discharge (intermittent) Water Industry Ammonia (Phys-Chem) Details RNAG Point source Sewage discharge (continuous) Water Industry Ammonia (Phys-Chem) 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 0 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 1 0 0 0 0 0 0 Water Industry 1 2 0 0 0 0 0 Local & central government 1 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 0 0 0 Sector under investigation 0 0 0 0 0 0 0 Total 4 2 0 0 0 0 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 Disproportionately expensive: Disproportionate burdens Invertebrates Good 2027 Disproportionately expensive: Disproportionate burdens Macrophytes and Phytobenthos Combined Good 2027 - Low confidence Disproportionately expensive: Disproportionate burdens Physico-chemical quality elements Good 2027 Disproportionately expensive: Disproportionate burdens Ammonia (Phys-Chem) Good 2021 Disproportionately expensive: Disproportionate burdens Dissolved oxygen Good 2015 Phosphate Good 2027 Disproportionately expensive: Disproportionate burdens Temperature Good 2015 pH Good 2015 Hydromorphological Supporting Elements Not assessed 2015 Supporting elements (Surface Water) Good 2027 - Low confidence Disproportionately expensive: Disproportionate burdens Mitigation Measures Assessment Good 2027 - Low confidence Disproportionately expensive: Disproportionate burdens Specific pollutants 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 Di(2-ethylhexyl)phthalate (Priority hazardous) 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 Nonylphenol Good 2015 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 Diuron Good 2015 Fluoranthene Good 2015 Other Pollutants Does not require assessment 2015
Protected areas PA Name Id Directive More information River Darwen UKENRI154 Urban Waste Water Treatment 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 RIVER DARWEN BELOW JACK KEYS RESERVOIR 88003533 2009, 2014 2015, 2016, 2019, 2014 2019, 2022 RIVER RIBBLE/RIVER DARWEN/CROWN PUBLIC HOUSE/ 4108 2010, 2009 RIVER RIBBLE/RIVER DARWEN/SUNNYHURST BROOK/D/S EARNSDALE RESERVOIR/ 37749 2013, 2014, 2012 2013, 2016, 2019, 2014, 2015 2019 145813 145813 2016, 2015, 2014 SUNNYHURST BROOK D/S EARNSDALE RES. 88023155 2014 68962 68962 2009, 2013, 2011, 2014, 2012, 2010 2015, 2013, 2016, 2014 69062 69062 2009, 2013, 2014, 2012, 2010 2016, 2015, 2013, 2014 RIVER DARWEN BELOW HOLLINS PAPER MILL 88003536 2010, 2009, 2013, 2014, 2012, 2011 2015, 2016, 2019, 2013, 2014 2019 RIVER RIBBLE/RIVER DARWEN/ABOVE DAVYFIELD BROOK CONF/ 4111 2010, 2009, 2014 2016, 2019, 2014, 2015 2019