Darwen - conf Blakewater to conf Roddlesworth Water Body Poor ecological status
Get Darwen - conf Blakewater to conf Roddlesworth data Attributes Water Body ID GB112071065290 Water Body Type River Hydromorphological designation not designated artificial or heavily modified NGR SD6478226502 Catchment area 460.4 ha Length 3.268 km Catchment area 4.604 km2 Surveillance Water Body No Classifications Classification Item 2019 2022 Ecological Poor Biological quality elements Poor Fish Poor Invertebrates Moderate Macrophytes and Phytobenthos Combined Poor Macrophytes Sub Element Poor Phytobenthos Sub Element Moderate Physico-chemical quality elements Moderate Ammonia (Phys-Chem) Good Dissolved oxygen High Phosphate Poor Temperature High pH High Hydromorphological Supporting Elements Supports good Hydrological Regime Supports good Morphology Supports good Specific pollutants High Copper High Zinc High Chemical Fail Does not require assessment Priority hazardous substances Fail Does not require assessment 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 Does not require assessment Cypermethrin (Priority) 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 Macrophytes and Phytobenthos Combined 2 2014 Poor Phosphate 2 2015 Poor Very certain there is a problem
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 Trade/Industry discharge Industry Invertebrates Details RNAG Point source Sewage discharge (continuous) Water Industry Invertebrates Details RNAG Point source Misconnections Industry Fish Details RNAG Point source Sewage discharge (continuous) Water Industry Fish Details RNAG measures delivered to address reason, awaiting recovery Not applicable No sector responsible Mercury and Its Compounds Details RNAG Point source Sewage discharge (continuous) Water Industry Macrophytes and Phytobenthos Combined Details RNAG Point source Sewage discharge (continuous) Water Industry 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 0 0 0 0 0 0 0 Industry 0 0 2 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 4 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 0 4 2 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 - Low confidence Disproportionately expensive: Disproportionate burdens Invertebrates Good 2027 - Low confidence Disproportionately expensive: Disproportionate burdens Macrophytes and Phytobenthos Combined Good 2027 - Low confidence Disproportionately expensive: Disproportionate burdens Physico-chemical quality elements Good 2027 - Low confidence Disproportionately expensive: Disproportionate burdens Ammonia (Phys-Chem) Good 2021 Disproportionately expensive: Disproportionate burdens 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 Copper 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 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 AT PLESSINGTON FIELDS 88003549 2009, 2012, 2013, 2011, 2014, 2010 2015, 2013, 2016, 2014, 2019 2019 67314 67314 2014, 2012, 2010, 2011, 2009 2014, 2015, 2016 RIVER RIBBLE/RIVER DARWEN/PLEASINGTON FIELDS 2/ 4116 2019, 2015, 2016 2019 RIVER RIBBLE/RIVER DARWEN/U/S RIVER BLAKEWATER NEAR WITTON/ 59803 2019, 2015, 2016 2019