Sowley Stream Water Body Moderate ecological status
Attributes Water Body ID GB107042011190 Water Body Type River Hydromorphological designation heavily modified NGR SZ3793896231 Catchment area 1381.763 ha Length 10.984 km Catchment area 13.818 km2 Surveillance Water Body Yes Classifications Classification Item 2019 Ecological Moderate Biological quality elements Moderate Fish Good Invertebrates Good Macrophytes and Phytobenthos Combined Moderate Phytobenthos Sub Element Moderate Physico-chemical quality elements Good Acid Neutralising Capacity High Ammonia (Phys-Chem) High Dissolved oxygen Good Phosphate Good Temperature High pH High Supporting elements (Surface Water) Moderate Mitigation Measures Assessment Moderate or less Specific pollutants High Chlorothalonil High Chromium (VI) High Copper High Iron High Manganese High Pendimethalin High Zinc High Chemical Fail Priority hazardous substances Fail Benzo(a)pyrene Good Benzo(b)fluoranthene Good Benzo(g-h-i)perylene Good Benzo(k)fluoranthene Good Cadmium and Its Compounds Good Dioxins and dioxin-like compounds Good Heptachlor and cis-Heptachlor epoxide Good Hexabromocyclododecane (HBCDD) Good Hexachlorobenzene Good Hexachlorobutadiene Good Hexachlorocyclohexane Good Mercury and Its Compounds Fail Nonylphenol Good Pentachlorobenzene Good Perfluorooctane sulphonate (PFOS) Good Polybrominated diphenyl ethers (PBDE) Fail Quinoxyfen Good Tributyltin Compounds Good Priority substances Good 1,2-dichloroethane Good Alachlor Good Benzene Good Bifenox Good Cybutryne Good Cypermethrin (Priority) Good Dichloromethane Good Dichlorvos (Priority) Good Fluoranthene Good Lead and Its Compounds Good Nickel and Its Compounds Good Terbutryn Good Trichloromethane Good Other Pollutants Good Carbon Tetrachloride Good DDT Total Good para - para DDT Good
Why do all water bodies have a chemical status of fail?
Investigations into classification status Classification Element Cycle Year Status Outcome Dissolved oxygen 2 2013 Moderate Uncertain 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 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 Diffuse source Poor soil management Agriculture and rural land management Macrophytes and Phytobenthos Combined Details RNAG Diffuse source Poor nutrient 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 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
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 2 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 1 1 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 1 0 0 0 2 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 2015 Invertebrates Good 2015 Macrophytes and Phytobenthos Combined Good 2027 - Low confidence Disproportionately expensive: Disproportionate burdens Physico-chemical quality elements Good 2015 Acid Neutralising Capacity Good 2015 Ammonia (Phys-Chem) Good 2015 Dissolved oxygen Good 2015 Phosphate Good 2015 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 Chlorothalonil High 2015 Chromium (VI) High 2015 Copper High 2015 Iron High 2015 Manganese High 2015 Pendimethalin 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 Benzo(b)fluoranthene Good 2015 Benzo(g-h-i)perylene Good 2015 Benzo(k)fluoranthene Good 2015 Cadmium and Its Compounds 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 Hexachlorocyclohexane Good 2015 Mercury and Its Compounds Good 2040 Natural conditions: Chemical status recovery time Nonylphenol Good 2015 Pentachlorobenzene Good 2015 Perfluorooctane sulphonate (PFOS) Good 2015 Polybrominated diphenyl ethers (PBDE) Good 2063 Natural conditions: Chemical status recovery time Quinoxyfen Good 2015 Tributyltin Compounds Good 2015 Priority substances Good 2015 1,2-dichloroethane Good 2015 Alachlor Good 2015 Benzene Good 2015 Bifenox Good 2015 Cybutryne Good 2015 Cypermethrin (Priority) Good 2015 Dichloromethane Good 2015 Dichlorvos (Priority) Good 2015 Fluoranthene Good 2015 Lead and Its Compounds Good 2015 Nickel and Its Compounds Good 2015 Terbutryn Good 2015 Trichloromethane Good 2015 Other Pollutants Good 2015 Carbon Tetrachloride Good 2015 DDT Total Good 2015 para - para DDT Good 2015
Protected areas PA Name Id Directive More information Lymington and Sowley_M UKSW40 Shellfish Water Directive Solent Maritime UK0030059 Special Area of Conservation Natural England Solent & Southampton Water UK9011061 Special Protection Area Natural England Solent & Southampton Water UK11063 Ramsar Site Natural England The New Forest UK0012557 Special Area of Conservation Natural England New Forest UK11047 Ramsar Site Natural England Sowley Pond Eutrophic lake NVZ EL114 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 43217 43217 2012, 2011, 2009, 2014, 2010, 2013 2016, 2019, 2014, 2013, 2015 2019 NEW FOREST/CROCKFORD STREAM/ 30247 2013, 2011, 2014, 2012, 2010, 2009 2013, 2016, 2014, 2019, 2015 2019 144992 144992 2010, 2013, 2011 159264 159264 2014 2013, 2016, 2015, 2014 159265 159265 2016, 2019, 2014, 2015 2019 EAST END G0004167 2010, 2013, 2011, 2014, 2009, 2012 2013, 2016, 2014, 2019, 2015 2019 43234 43234 2011, 2009, 2010 142959 142959 2013, 2011 BECK FARM G0004165 2014 2016, 2014, 2019, 2015 2019 NEW FOREST/SOWLEY STREAM, BECK FARM/ 43367 2013, 2014 2013, 2016, 2014, 2019, 2015 2019