The Birket including Arrowe Brook and Fender Water Body
Moderate ecological status
Get The Birket including Arrowe Brook and Fender data
Attributes
- Water Body IDGB112068060530
- Water Body TypeRiver
- Hydromorphological designationheavily modified
- NGRSJ2638687986
- Catchment area78.264 km2
- Surveillance Water BodyNo
- Length26.134 km
- Catchment area7826.434 ha
Classifications
| Classification Item | 2019 | 2022 |
|---|---|---|
| Ecological | Moderate | Moderate |
| Biological quality elements | Poor | Poor |
| Fish | Poor | Poor |
| Invertebrates | Poor | Poor |
| Macrophytes and Phytobenthos Combined | ||
| Macrophytes Sub Element | Good | Good |
| Physico-chemical quality elements | Moderate | Moderate |
| Ammonia (Phys-Chem) | Moderate | Poor |
| Biochemical Oxygen Demand (BOD) | Moderate | |
| Dissolved oxygen | Bad | Bad |
| Phosphate | Poor | Poor |
| Temperature | High | High |
| pH | High | High |
| Hydromorphological Supporting Elements | Supports good | Supports good |
| Hydrological Regime | Supports good | Supports good |
| Supporting elements (Surface Water) | Moderate | Moderate |
| Mitigation Measures Assessment | Moderate or less | Moderate or less |
| Specific pollutants | High | High |
| Triclosan | High | High |
| 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 | |
| Nonylphenol | Good | |
| Perfluorooctane sulphonate (PFOS) | Fail | |
| Polybrominated diphenyl ethers (PBDE) | Fail | |
| Priority substances | Good | Does not require assessment |
| Fluoranthene | Good | |
| Other Pollutants | Does not require assessment | Does not require assessment |
Investigations into classification status
No data to show
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 Livestock Management | Agriculture and rural land management | Ammonia (Phys-Chem) | 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 | Phosphate | Details |
| RNAG | Diffuse source | Urbanisation - urban development | Urban and transport | Ammonia (Phys-Chem) | Details |
| RNAG | Diffuse source | Urbanisation - urban development | Urban and transport | Fish | Details |
| RNAG | Physical modification | Other (not in list, must add details in comments) | Urban and transport | Mitigation Measures Assessment | Details |
| RNAG | Diffuse source | Urbanisation - urban development | Urban and transport | Phosphate | Details |
| RNAG | Diffuse source | Contaminated land | Urban and transport | Ammonia (Phys-Chem) | Details |
| RNAG | Other pressures | Ecological recovery time - surface waters | No sector responsible | Fish | Details |
| RNAG | Diffuse source | Poor soil management | Agriculture and rural land management | Dissolved oxygen | Details |
| RNAG | Diffuse source | Poor nutrient management | Agriculture and rural land management | Invertebrates | Details |
| RNAG | Physical modification | Land drainage - structures | 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 Livestock Management | Agriculture and rural land management | Dissolved oxygen | Details |
| RNAG | Diffuse source | Urbanisation - urban development | Urban and transport | Invertebrates | Details |
| RNAG | Physical modification | Flood protection - structures | Urban and transport | Fish | Details |
| RNAG | Physical modification | Flood protection - structures | Sector under investigation | Invertebrates | Details |
| RNAG | Physical modification | Ports and harbours - structures | Sector under investigation | Fish | Details |
| RNAG | Diffuse source | Contaminated land | Urban and transport | Dissolved oxygen | Details |
| RNAG | Diffuse source | Poor soil management | Agriculture and rural land management | Invertebrates | Details |
| RNAG | Diffuse source | Poor soil management | Agriculture and rural land management | Fish | Details |
| RNAG | Unknown (pending investigation) | Unknown (pending investigation) | Sector under investigation | Perfluorooctane sulphonate (PFOS) | Details |
| RNAG | Flow | Land drainage | Agriculture and rural land management | Dissolved oxygen | Details |
| RNAG | Diffuse source | Poor Livestock 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 | measures delivered to address reason, awaiting recovery | Not applicable | No sector responsible | Polybrominated diphenyl ethers (PBDE) | Details |
| RNAG | Diffuse source | Urbanisation - urban development | Urban and transport | Dissolved oxygen | Details |
| RNAG | Diffuse source | Poor pesticide management | Agriculture and rural land management | Fish | Details |
| RNAG | Diffuse source | Poor Livestock Management | Agriculture and rural land management | Phosphate | Details |
| RNAG | Diffuse source | Poor soil management | Agriculture and rural land management | Ammonia (Phys-Chem) | Details |
| RNAG | Diffuse source | Poor soil management | Agriculture and rural land management | Phosphate | Details |
| RNAG | Diffuse source | Poor soil management | Agriculture and rural land management | 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 | 1 | 0 | 0 | 1 | 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 | 2 | 0 | 5 | 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 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
| Total | 5 | 0 | 5 | 1 | 0 | 1 | 0 |
Objectives
| Classification Item | Status | Year | Reasons |
|---|---|---|---|
| Ecological | Good | 2027 - Low confidence | Disproportionately expensive: Disproportionate burdens; Good status prevented by A/HMWB designated use: Action to get biological element to good would have significant adverse impact on use |
| Biological quality elements | Moderate | 2027 - Low confidence | Disproportionately expensive: Disproportionate burdens; Good status prevented by A/HMWB designated use: Action to get biological element to good would have significant adverse impact on use |
| Fish | Moderate | 2027 - Low confidence | Disproportionately expensive: Disproportionate burdens; Good status prevented by A/HMWB designated use: Action to get biological element to good would have significant adverse impact on use |
| Invertebrates | Good | 2027 - Low confidence | Disproportionately expensive: Disproportionate burdens |
| Macrophytes and Phytobenthos Combined | Not assessed | 2015 | Disproportionately expensive: Disproportionate burdens |
| Physico-chemical quality elements | Good | 2027 - Low confidence | Disproportionately expensive: Disproportionate burdens |
| Ammonia (Phys-Chem) | Good | 2027 - Low confidence | Disproportionately expensive: Disproportionate burdens |
| Dissolved oxygen | Good | 2027 - Low confidence | Disproportionately expensive: Disproportionate burdens |
| 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 | 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 | |
| Triclosan | High | 2015 | |
| Chemical | Good | 2063 | Natural conditions: Chemical status recovery time; Technically infeasible: No known technical solution is available |
| Priority hazardous substances | Good | 2063 | Natural conditions: Chemical status recovery time; Technically infeasible: No known technical solution is available |
| 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 |
| Nonylphenol | Good | 2015 | |
| Perfluorooctane sulphonate (PFOS) | Good | 2039 | Technically infeasible: No known technical solution is available |
| Polybrominated diphenyl ethers (PBDE) | Good | 2063 | Natural conditions: Chemical status recovery time |
| Priority substances | Good | 2015 | |
| Fluoranthene | Good | 2015 | |
| Other Pollutants | Does not require assessment | 2015 |
Protected areas
| PA Name | Id | Directive | More information |
|---|---|---|---|
| The Dee Estuary | UK11082 | Ramsar Site | Natural England |
| Dee Estuary | UK0030131 | Special Area of Conservation | Natural England |
| North Wirral (East) | UKSW109 | Shellfish Water Directive | |
| Mersey Narrows & North Wirral Foreshore | UK11042 | Ramsar Site | Natural England |
| Mersey Narrows & North Wirral Foreshore | UK9020287 | Special Protection Area | Natural England |
Monitoring sites which have been used to classify this water body
Shows which sites were used for classification for which years within each cycle.