Black Dyke (trib of Ancholme) Water Body Poor ecological status
Get Black Dyke (trib of Ancholme) data Attributes Water Body ID GB104029061890 Water Body Type River Hydromorphological designation artificial NGR SK9987093769 Surveillance Water Body No Catchment area 43.464 km2 Catchment area 4346.44 ha Length 8.78 km Classifications Classification Item 2019 Ecological Poor Biological quality elements Poor Invertebrates Poor Macrophytes and Phytobenthos Combined Moderate Macrophytes Sub Element Moderate Physico-chemical quality elements Good Ammonia (Phys-Chem) High Dissolved oxygen High Phosphate Good Temperature High pH High Hydromorphological Supporting Elements Supports good Hydrological Regime Does not support good Supporting elements (Surface Water) Moderate Mitigation Measures Assessment Moderate or less Chemical Fail Priority hazardous substances Fail Benzo(a)pyrene Good Benzo(b)fluoranthene Good Benzo(g-h-i)perylene Good Benzo(k)fluoranthene 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 Classification Element Cycle Year Status Outcome Phosphate 2 2014 Good Quite 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 Diffuse source Poor soil management Agriculture and rural land management Invertebrates Details RNAG measures delivered to address reason, awaiting recovery Not applicable No sector responsible Mercury and Its Compounds Details RNAG Diffuse source Poor nutrient management Agriculture and rural land management Macrophytes and Phytobenthos Combined Details RNAG Physical modification Other (not in list, must add details in comments) Agriculture and rural land management Mitigation Measures Assessment Details RNAG Diffuse source Poor soil management Agriculture and rural land management Macrophytes and Phytobenthos Combined Details 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 Phosphate Details RNAG Point source Trade/Industry discharge Industry Invertebrates Details RNAG Point source Sewage discharge (continuous) Sector under investigation Invertebrates Details RNAG Physical modification Other (not in list, must add details in comments) Local and Central Government Mitigation Measures Assessment Details RNAG Flow No further action (Flow is below the EFI but NOT causing an ecological failure) No sector responsible Hydrological Regime 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 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 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 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 2 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 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 2015 Ammonia (Phys-Chem) Good 2015 Dissolved oxygen Good 2015 Phosphate Good 2015 Temperature Good 2015 pH Good 2015 Hydromorphological Supporting Elements Supports good 2015 Hydrological Regime Does not support good 2015 Disproportionately expensive: Unfavourable balance of costs and benefits 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 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 Benzo(b)fluoranthene Good 2015 Benzo(g-h-i)perylene Good 2015 Benzo(k)fluoranthene 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 Lincolnshire Limestone G69 Nitrates Directive River Ancholme SWSGZ1000 Safeguard Zone Ancholme from Bishopbridge to the Humber NVZ S356 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 BLACK DYKE BLACKDYK 2014, 2012, 2013 2014, 2015, 2016, 2019, 2013 2019 NEW R.ANCHOLME WORLABY BOTTOM ANCN2 2009 184592 184592 2019 2019 R.ANCHOLME HIBALDSTOW BOTTOM ANCO4 2009 WEST DRN.SCABCROFT WEST1 2009, 2010 93028 93028 2014 2019, 2015, 2014, 2016 2019 R.ANCHOLME CADNEY BOTTOM ANCN5 2009, 2010 NEW R.ANCHOLME BRANDY WHARF BOTTOM ANCO3 2009, 2010 OLD R.ANCHOLME WORLABY ANCOB 2009 LAND DRAIN AT SAXBY LAND1 2009 R.ANCHOLME HORKSTOW BOTTOM ANCOC 2009, 2010 184591 184591 2019 2019 55036 55036 2019, 2013, 2016, 2014 2019