Stockland Bristol Stream Water Body
Moderate ecological status
Get Stockland Bristol Stream data
Attributes
- Water Body IDGB108052021331
- Water Body TypeRiver
- Hydromorphological designationheavily modified
- NGRST2572243887
- Catchment area10.232 km2
- Catchment area1023.174 ha
- Length3.541 km
- Surveillance Water BodyNo
Classifications
Classification Item | 2019 |
---|---|
Ecological | Moderate |
Biological quality elements | Good |
Invertebrates | Good |
Physico-chemical quality elements | Moderate |
Ammonia (Phys-Chem) | Poor |
Dissolved oxygen | Bad |
Phosphate | Poor |
Temperature | High |
pH | High |
Hydromorphological Supporting Elements | Supports good |
Hydrological Regime | Supports good |
Supporting elements (Surface Water) | Moderate |
Mitigation Measures Assessment | Moderate or less |
Chemical | Fail |
Priority hazardous substances | Fail |
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 |
Cypermethrin (Priority) | Good |
Fluoranthene | Good |
Other Pollutants | 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 |
---|---|---|---|---|---|
RFD | Point source | Incidents | Sector under investigation | Ammonia (Phys-Chem) | Details |
RNAG | Point source | Farm/site infrastructure | Agriculture and rural land management | Ammonia (Phys-Chem) | Details |
RNAG | Diffuse source | Septic Tanks | Domestic General Public | Ammonia (Phys-Chem) | Details |
RNAG | Physical modification | Land drainage - operational management | Agriculture and rural land management | Ammonia (Phys-Chem) | Details |
RNAG | measures delivered to address reason, awaiting recovery | Not applicable | No sector responsible | Polybrominated diphenyl ethers (PBDE) | Details |
RNAG | Diffuse source | Septic Tanks | Domestic General Public | Dissolved oxygen | Details |
RNAG | Diffuse source | Septic Tanks | Domestic General Public | Phosphate | Details |
RNAG | Point source | Private Sewage Treatment | Waste treatment and disposal | Ammonia (Phys-Chem) | Details |
RNAG | Diffuse source | Poor nutrient management | Agriculture and rural land management | Dissolved oxygen | Details |
RNAG | Diffuse source | Poor nutrient management | Agriculture and rural land management | Ammonia (Phys-Chem) | Details |
RNAG | Point source | Farm/site infrastructure | Agriculture and rural land management | Phosphate | Details |
RNAG | Point source | Private Sewage Treatment | Waste treatment and disposal | Phosphate | Details |
RNAG | Physical modification | Other (not in list, must add details in comments) | Agriculture and rural land management | Mitigation Measures Assessment | Details |
RNAG | measures delivered to address reason, awaiting recovery | Not applicable | No sector responsible | Mercury and Its Compounds | Details |
RNAG | Physical modification | Land drainage - operational management | Agriculture and rural land management | Dissolved oxygen | Details |
RNAG | Point source | Farm/site infrastructure | Agriculture and rural land management | Dissolved oxygen | Details |
RNAG | Diffuse source | Poor nutrient management | Agriculture and rural land management | Phosphate | Details |
RNAG | Flow | Land drainage - operational management | Agriculture and rural land management | Dissolved oxygen | Details |
RNAG | Point source | Private Sewage Treatment | Waste treatment and disposal | Dissolved oxygen | 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 | 3 | 0 | 0 | 1 | 0 | 5 | 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 | 1 | 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 | 3 | 0 | 1 | 1 | 0 | 5 | 0 |
Objectives
Classification Item | Status | Year | Reasons |
---|---|---|---|
Ecological | Good | 2027 - Low confidence | Disproportionately expensive: Disproportionate burdens |
Biological quality elements | Good | 2015 | |
Invertebrates | Good | 2015 | |
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 | 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 |
Protected areas
PA Name | Id | Directive | More information |
---|---|---|---|
Severn Estuary | UK9015022 | Special Protection Area | Natural England |
Severn Estuary | UK11081 | Ramsar Site | Natural England |
Severn Estuary | UK0013030 | Special Area of Conservation | 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.