Black Sluice IDB draining to the South Forty Foot Drain Water Body
Poor ecological status
Get Black Sluice IDB draining to the South Forty Foot Drain data
Attributes
- Water Body IDGB205030051515
- Water Body TypeRiver
- Hydromorphological designationheavily modified
- NGRTF1800838389
- Catchment area447.221 km2
- Surveillance Water BodyNo
- Length34.713 km
- Catchment area44722.132 ha
Classifications
| Classification Item | 2019 | 2022 |
|---|---|---|
| Ecological | Moderate | Poor |
| Biological quality elements | Poor | Poor |
| Fish | Poor | Poor |
| Macrophytes and Phytobenthos Combined | High | |
| Macrophytes Sub Element | High | High |
| Physico-chemical quality elements | Moderate | Moderate |
| Ammonia (Phys-Chem) | High | High |
| Biochemical Oxygen Demand (BOD) | Good | Good |
| Dissolved oxygen | Moderate | Moderate |
| Phosphate | Moderate | Good |
| Temperature | High | High |
| pH | High | High |
| Hydromorphological Supporting Elements | Supports good | Supports good |
| Hydrological Regime | Supports good | Does not support good |
| Supporting elements (Surface Water) | Moderate | Moderate |
| Mitigation Measures Assessment | Moderate or less | Moderate or less |
| Specific pollutants | High | High |
| 2,4-dichlorophenol | High | High |
| Arsenic | High | High |
| Chlorothalonil | High | High |
| Copper | High | High |
| Diazinon | High | High |
| Dimethoate | High | High |
| Iron | High | High |
| Linuron | High | High |
| Manganese | High | High |
| Mecoprop | High | High |
| Pendimethalin | High | High |
| Permethrin | High | High |
| Phenol | High | High |
| Triclosan | 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 | |
| Hexachlorocyclohexane | Good | |
| Mercury and Its Compounds | Fail | |
| Pentachlorobenzene | Good | |
| Perfluorooctane sulphonate (PFOS) | Good | |
| Polybrominated diphenyl ethers (PBDE) | Fail | |
| Quinoxyfen | Good | |
| Tributyltin Compounds | Good | |
| Priority substances | Good | Does not require assessment |
| Aclonifen | Good | |
| Alachlor | Good | |
| Bifenox | Good | |
| Chlorpyrifos | Good | |
| Cybutryne | Good | |
| Cypermethrin (Priority) | Good | |
| Dichlorvos (Priority) | Good | |
| Fluoranthene | Good | |
| Lead and Its Compounds | Good | |
| Nickel and Its Compounds | Good | |
| Pentachlorophenol | Good | |
| Terbutryn | Good | |
| Other Pollutants | Good | Does not require assessment |
| Aldrin, Dieldrin, Endrin & Isodrin | Good |
Investigations into classification status
| Classification Element | Cycle | Year | Status | Outcome |
|---|---|---|---|---|
| Temperature | 2 | 2015 | Moderate | Certain there is not a problem |
| Biochemical Oxygen Demand (BOD) | 2 | 2019 | Moderate | Certain there is not a problem |
| Dissolved oxygen | 2 | 2019 | Poor | Quite certain there is a problem |
| Dissolved oxygen | 2 | 2015 | Moderate | Certain there is not 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 | Point source | Sewage discharge (continuous) | Water Industry | Fish | Details |
| RNAG | measures delivered to address reason, awaiting recovery | Not applicable | No sector responsible | Polybrominated diphenyl ethers (PBDE) | Details |
| RNAG | Diffuse source | Poor Livestock Management | Agriculture and rural land management | Fish | Details |
| RNAG | Diffuse source | Poor nutrient management | Agriculture and rural land management | Fish | Details |
| RNAG | Diffuse source | Urbanisation - urban development | Urban and transport | Phosphate | Details |
| RNAG | Point source | Private Sewage Treatment | Domestic General Public | Phosphate | Details |
| RNAG | Diffuse source | Poor Livestock Management | Agriculture and rural land management | Phosphate | Details |
| RNAG | Physical modification | Land drainage - operational management | Agriculture and rural land management | Fish | Details |
| RNAG | Physical modification | Other (not in list, must add details in comments) | Local and Central Government | Mitigation Measures Assessment | Details |
| RNAG | Diffuse source | Poor nutrient management | Agriculture and rural land management | Phosphate | Details |
| RNAG | Point source | Sewage discharge (intermittent) | Domestic General Public | Dissolved oxygen | Details |
| RNAG | measures delivered to address reason, awaiting recovery | Not applicable | No sector responsible | Mercury and Its Compounds | Details |
| RNAG | Diffuse source | Poor Livestock Management | Agriculture and rural land management | Dissolved oxygen | Details |
| RNAG | Physical modification | Flood protection - water level management | Local and Central Government | Fish | Details |
| RNAG | Diffuse source | Poor nutrient management | Agriculture and rural land management | Dissolved oxygen | Details |
| RNAG | Point source | Sewage discharge (continuous) | Water Industry | Phosphate | Details |
| RNAG | Diffuse source | Urbanisation - urban development | Urban and transport | Dissolved oxygen | Details |
| RNAG | Natural | Saline or other intrusion | No sector responsible | Fish | Details |
| RNAG | Point source | Sewage discharge (continuous) | Water Industry | Dissolved oxygen | Details |
| RNAG | Invasive non-native species | Other invertebrates | No sector responsible | Fish | Details |
| RNAG | Physical modification | Other (not in list, must add details in comments) | Agriculture and rural land management | Mitigation Measures Assessment | Details |
| RNAG | Physical modification | Barriers - ecological discontinuity | Other | Fish | 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 | 2 | 0 | 0 | 0 | 0 | 4 | 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 | 1 | 0 | 0 | 0 | 0 |
| Water Industry | 0 | 2 | 0 | 0 | 0 | 0 | 0 |
| Local & central government | 2 | 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 | 5 | 2 | 1 | 0 | 0 | 4 | 0 |
Objectives
| Classification Item | Status | Year | Reasons |
|---|---|---|---|
| Ecological | Moderate | 2015 | Disproportionately expensive: Disproportionate burdens; Disproportionately expensive: Unfavourable balance of costs and benefits; Good status prevented by A/HMWB designated use: Action to get biological element to good would have significant adverse impact on use; Technically infeasible: No known technical solution is available |
| Biological quality elements | Moderate | 2027 - Low confidence | Disproportionately expensive: Disproportionate burdens; Disproportionately expensive: Unfavourable balance of costs and benefits; Good status prevented by A/HMWB designated use: Action to get biological element to good would have significant adverse impact on use; Technically infeasible: No known technical solution is available |
| Fish | Moderate | 2027 - Low confidence | Disproportionately expensive: Disproportionate burdens; Disproportionately expensive: Unfavourable balance of costs and benefits; Good status prevented by A/HMWB designated use: Action to get biological element to good would have significant adverse impact on use; Technically infeasible: No known technical solution is available |
| Macrophytes and Phytobenthos Combined | Not assessed | 2015 | |
| Physico-chemical quality elements | Moderate | 2015 | Disproportionately expensive: Unfavourable balance of costs and benefits; Technically infeasible: No known technical solution is available |
| Ammonia (Phys-Chem) | Good | 2015 | |
| Dissolved oxygen | Good | 2015 | |
| Phosphate | Moderate | 2015 | Disproportionately expensive: Unfavourable balance of costs and benefits; Technically infeasible: No known technical solution is available |
| Temperature | Good | 2015 | |
| pH | Good | 2015 | |
| Hydromorphological Supporting Elements | Supports good | 2015 | |
| Hydrological Regime | Supports good | 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 | |
| 2,4-dichlorophenol | High | 2015 | |
| Arsenic | High | 2015 | |
| Chlorothalonil | High | 2015 | |
| Copper | High | 2015 | |
| Diazinon | High | 2015 | |
| Dimethoate | High | 2015 | |
| Iron | High | 2015 | |
| Linuron | High | 2015 | |
| Manganese | High | 2015 | |
| Mecoprop | High | 2015 | |
| Pendimethalin | High | 2015 | |
| Permethrin | High | 2015 | |
| Phenol | High | 2015 | |
| Triclosan | High | 2015 | |
| Zinc | High | 2015 | |
| Chemical | Good | 2063 | Disproportionately expensive: Disproportionate burdens; Natural conditions: Chemical status recovery time |
| Priority hazardous substances | Good | 2063 | Disproportionately expensive: Disproportionate burdens; 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 | |
| Hexachlorocyclohexane | Good | 2021 | Disproportionately expensive: Disproportionate burdens |
| Mercury and Its Compounds | Good | 2040 | Natural conditions: Chemical status recovery time |
| 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 | |
| Aclonifen | Good | 2015 | |
| Alachlor | Good | 2015 | |
| Bifenox | Good | 2015 | |
| Chlorpyrifos | Good | 2015 | |
| Cybutryne | Good | 2015 | |
| Cypermethrin (Priority) | Good | 2015 | |
| Dichlorvos (Priority) | Good | 2015 | |
| Fluoranthene | Good | 2015 | |
| Lead and Its Compounds | Good | 2015 | |
| Nickel and Its Compounds | Good | 2015 | |
| Pentachlorophenol | Good | 2015 | |
| Terbutryn | Good | 2015 | |
| Other Pollutants | Good | 2021 | Disproportionately expensive: Disproportionate burdens |
| Aldrin, Dieldrin, Endrin & Isodrin | Good | 2021 | Disproportionately expensive: Disproportionate burdens |
Protected areas
| PA Name | Id | Directive | More information |
|---|---|---|---|
| West Wash | UKSW4 | Shellfish Water Directive | |
| The Wash & North Norfolk Coast | UK0017075 | Special Area of Conservation | Natural England |
| The Wash | UK9008021 | Special Protection Area | Natural England |
| The Wash | UK11072 | Ramsar Site | Natural England |
| Black Sluice IDB draining to the South Forty Foot Drain NVZ | S669 | 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.