By Bk - conf Doncombe Bk to conf R Avon (Brist) Water Body
Moderate ecological status
Get By Bk - conf Doncombe Bk to conf R Avon (Brist) data
Attributes
- Water Body IDGB109053027380
- Water Body TypeRiver
- Hydromorphological designationnot designated artificial or heavily modified
- NGRST8392271841
- Catchment area3560.925 ha
- Length17.368 km
- Surveillance Water BodyNo
- Catchment area35.609 km2
Classifications
Classification Item | 2019 | 2022 |
---|---|---|
Ecological | Moderate | Moderate |
Biological quality elements | Moderate | Moderate |
Fish | Moderate | Moderate |
Invertebrates | High | High |
Macrophytes and Phytobenthos Combined | Good | Good |
Macrophytes Sub Element | Good | Good |
Physico-chemical quality elements | Moderate | Moderate |
Ammonia (Phys-Chem) | High | High |
Dissolved oxygen | High | High |
Phosphate | Moderate | Moderate |
Temperature | High | High |
pH | High | High |
Hydromorphological Supporting Elements | Supports good | Supports good |
Hydrological Regime | Supports good | Supports good |
Morphology | Supports good | Supports good |
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 | |
Perfluorooctane sulphonate (PFOS) | Good | |
Polybrominated diphenyl ethers (PBDE) | Fail | |
Priority substances | Good | Does not require assessment |
Cypermethrin (Priority) | Good | |
Fluoranthene | Good | |
Other Pollutants | Does not require assessment | Does not require assessment |
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 nutrient management | Agriculture and rural land management | Phosphate | 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 | Phosphate | Details |
RNAG | measures delivered to address reason, awaiting recovery | Not applicable | No sector responsible | Polybrominated diphenyl ethers (PBDE) | Details |
RFD | Natural | Drought | No sector responsible | Fish | Details |
RNAG | Diffuse source | Poor soil management | Agriculture and rural land management | Fish | Details |
RNAG | Diffuse source | Riparian/in-river activities (inc bankside erosion) | Agriculture and rural land management | Fish | Details |
RNAG | Suspect data | Not applicable | No sector responsible | Fish | Details |
RNAG | Physical modification | Barriers - ecological discontinuity | Industry | 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 | 0 | 0 | 0 | 0 | 0 | 1 | 0 |
Industry | 1 | 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 | 1 | 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 | 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 | 1 | 1 | 0 | 0 | 0 | 1 | 0 |
Objectives
Classification Item | Status | Year | Reasons |
---|---|---|---|
Ecological | Good | 2027 - Low confidence | Disproportionately expensive: Disproportionate burdens |
Biological quality elements | Good | 2015 | Disproportionately expensive: Disproportionate burdens |
Fish | Good | 2015 | |
Invertebrates | Good | 2015 | |
Macrophytes and Phytobenthos Combined | Good | 2015 | |
Physico-chemical quality elements | Good | 2027 - Low confidence | Disproportionately expensive: Disproportionate burdens |
Ammonia (Phys-Chem) | Good | 2015 | |
Dissolved oxygen | Good | 2015 | |
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) | Not assessed | 2015 | |
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 | |
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 |
Monitoring sites which have been used to classify this water body
Shows which sites were used for classification for which years within each cycle.