Hammer Stream (W. Sussex) Water Body Moderate ecological status
Get Hammer Stream (W. Sussex) data Attributes Water Body ID GB107041012820 Water Body Type River Hydromorphological designation not designated artificial or heavily modified NGR SU8394224344 Catchment area 2424.94 ha Length 5.169 km Catchment area 24.249 km2 Surveillance Water Body No Classifications Classification Item 2019 2022 Ecological Moderate Moderate Biological quality elements Moderate Moderate Fish Moderate Moderate Invertebrates Good Good Macrophytes and Phytobenthos Combined Moderate Moderate Phytobenthos Sub Element Moderate Moderate Physico-chemical quality elements Good Good Acid Neutralising Capacity High High Ammonia (Phys-Chem) High High Dissolved oxygen Good Good Phosphate Good Good Temperature High High pH High High Hydromorphological Supporting Elements Supports good Supports good Hydrological Regime Does not support good Does not support good Morphology Supports good Supports good Specific pollutants High High Copper High High Zinc High High Chemical Fail Does not require assessment Priority hazardous substances Fail Does not require assessment Benzo(a)pyrene 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 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 Lead and Its Compounds Good Nickel and Its Compounds 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 Hydrological Regime 2 2015 Does Not Support Good Quite certain there is a problem Macrophytes and Phytobenthos Combined 2 2015 Moderate Quite certain there is a problem Fish 2 2015 Moderate Quite certain there is a problem Copper 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 Flow No further action (Flow is below the EFI but NOT causing an ecological failure) No sector responsible Hydrological Regime Details RNAG Flow Groundwater abstraction Water Industry Hydrological Regime Details RNAG measures delivered to address reason, awaiting recovery Not applicable No sector responsible Mercury and Its Compounds Details RNAG measures delivered to address reason, awaiting recovery Not applicable No sector responsible Polybrominated diphenyl ethers (PBDE) Details RNAG Diffuse source Poor soil management Agriculture and rural land management Fish Details RNAG Physical modification Barriers - ecological discontinuity Agriculture and rural land management Fish Details RNAG Physical modification Reservoir / Impoundment - non flow related Other Macrophytes and Phytobenthos Combined Details RNAG Diffuse source Poor nutrient management Agriculture and rural land management 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 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 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 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 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 Fish Good 2027 - Low confidence Disproportionately expensive: Disproportionate burdens 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 Supports good 2015 Hydrological Regime Does not support good 2015 Disproportionately expensive: Unfavourable balance of costs and benefits 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 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 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 Lead and Its Compounds Good 2015 Nickel and Its Compounds Good 2015 Other Pollutants Does not require assessment 2015
Protected areas PA Name Id Directive More information River Western Rother SWSGZ4014 Safeguard Zone Arun SWSGZ4317 Safeguard Zone Petersfield G61 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 R ROTHER TRIB HAMMER F0002997 2014, 2009, 2013, 2012 2015, 2016, 2014, 2019, 2013 2019, 2022 WESTERN ROTHER/WESTERN ROTHER TRIBUTARIES/HAMMER STREAM/MILLAND/ 22410 2012, 2010, 2009, 2011 2019, 2015, 2016 2019 WESTERN ROTHER/WESTERN ROTHER TRIBUTARIES/HAMMER STREAM/D/S HAMMER POND/ 23371 2012, 2010, 2009, 2013, 2011, 2014 2019, 2015, 2013, 2016, 2014 2019 42774 42774 2009, 2013, 2014, 2010 2015, 2013, 2016, 2014