Davyfield Brook Water Body Moderate ecological status
Attributes Water Body ID GB112071065260 Water Body Type River Hydromorphological designation not designated artificial or heavily modified NGR SD7074424176 Catchment area 13.628 km2 Surveillance Water Body No Length 5.607 km Catchment area 1362.797 ha Classifications Classification Item 2019 2022 Ecological Moderate Moderate Biological quality elements High Moderate Fish High Moderate Invertebrates High High Physico-chemical quality elements Moderate Moderate Ammonia (Phys-Chem) Good Good Dissolved oxygen High High Phosphate Moderate Moderate Temperature High High pH High High Hydromorphological Supporting Elements Supports good Supports good Hydrological Regime Does not support good Supports good Morphology Supports good Supports good 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 Phosphate 2 2015 Moderate Ammonia (Phys-Chem) 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 Diffuse source Poor nutrient management Agriculture and rural land management Phosphate Details RNAG Physical modification Reservoir / Impoundment - non flow related Industry Hydrological Regime 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 1 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 0 0 0 0 0 1 0
Objectives Classification Item Status Year Reasons Ecological Good 2027 - Low confidence Disproportionately expensive: Disproportionate burdens Biological quality elements Good 2015 Fish Good 2015 Invertebrates Good 2015 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 2027 - Low confidence Disproportionately expensive: Disproportionate burdens Supporting elements (Surface Water) Not assessed 2015 Specific pollutants Not assessed 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 Fishmoor SWSGZ3008 Safeguard Zone
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 RIBBLE/RIVER DARWEN/DAVYFIELD BROOK/WATERSIDE/ 4122 2014 WATERSIDE BROOK AT ROMAN ROAD PTC TRB? 88003538 2014, 2010, 2013, 2011, 2012, 2009 2014, 2013, 2015, 2016 RIVER RIBBLE/RIVER DARWEN/DAVYFIELD BROOK/AT ROMAN ROAD/ 16805 2009, 2014, 2010, 2013, 2011 2016, 2014, 2015, 2013 WATERSIDE BROOK D/S RESERVOIR CONF. 88023157 2014 WATERSIDE BROOK PTC RIVER DARWEN 88003539 2010, 2011, 2012, 2009 2015, 2016 RIVER RIBBLE/RIVER DARWEN/DAVYFIELD BROOK/GRIMSHAW BROOK/MEAN BROOK/PTC WATERSIDE BROOK/ 69871 2022 186265 186265 2019 2019 65429 65429 2011, 2014, 2010, 2009 2014, 2015, 2016 67767 67767 2014 2014, 2015, 2016