Vyne Stream Water Body
Moderate ecological status
Get Vyne Stream data
Attributes
- Water Body IDGB106039017110
- Water Body TypeRiver
- Hydromorphological designationheavily modified
- NGRSU6270556510
- Catchment area12.646 km2
- Surveillance Water BodyNo
- Length7.379 km
- Catchment area1264.58 ha
Classifications
Classification Item | 2019 | 2022 |
---|---|---|
Ecological | Moderate | |
Biological quality elements | Moderate | |
Fish | Moderate | |
Invertebrates | Good | |
Macrophytes and Phytobenthos Combined | ||
Macrophytes Sub Element | Moderate | |
Physico-chemical quality elements | Moderate | |
Ammonia (Phys-Chem) | High | |
Dissolved oxygen | High | |
Phosphate | Poor | |
Temperature | High | |
pH | High | |
Hydromorphological Supporting Elements | Supports good | |
Hydrological Regime | Supports good | |
Supporting elements (Surface Water) | Good | |
Mitigation Measures Assessment | 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 | Good | |
Perfluorooctane sulphonate (PFOS) | Fail | |
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 | Invasive non-native species | North american signal crayfish | No sector responsible | Fish | Details |
RNAG | Physical modification | Impoundment - u/s elevated water level | Recreation | Fish | Details |
RNAG | Unknown (pending investigation) | Unknown (pending investigation) | Sector under investigation | Perfluorooctane sulphonate (PFOS) | Details |
RNAG | Physical modification | Water level management in impounded water bodies | Other | Fish | Details |
RNAG | measures delivered to address reason, awaiting recovery | Not applicable | No sector responsible | Polybrominated diphenyl ethers (PBDE) | Details |
RNAG | Physical modification | Reservoir / Impoundment - non flow related | Other | Fish | Details |
RNAG | Physical modification | Barriers - ecological discontinuity | Other | Fish | Details |
RNAG | Point source | Sewage discharge (continuous) | Urban and transport | Phosphate | Details |
RNAG | Point source | Sewage discharge (continuous) | Water Industry | Phosphate | Details |
RNAG | Diffuse source | Poor nutrient management | Agriculture and rural land management | Phosphate | 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 | 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 | 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 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
Waste treatment and disposal | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Other | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
No sector responsible | 0 | 0 | 0 | 0 | 1 | 0 | 0 |
Sector under investigation | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Total | 3 | 1 | 0 | 0 | 1 | 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; Natural conditions: Ecological recovery time |
Biological quality elements | Moderate | 2021 | Good status prevented by A/HMWB designated use: Action to get biological element to good would have significant adverse impact on use; Natural conditions: Ecological recovery time |
Fish | Moderate | 2021 | Good status prevented by A/HMWB designated use: Action to get biological element to good would have significant adverse impact on use |
Invertebrates | Good | 2015 | |
Macrophytes and Phytobenthos Combined | Not assessed | 2021 | Natural conditions: Ecological recovery time |
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 | 2021 | Disproportionately expensive: Disproportionate burdens |
Supporting elements (Surface Water) | Good | 2015 | |
Mitigation Measures Assessment | Good | 2015 | |
Specific pollutants | Not assessed | 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 | 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 | |
Cypermethrin (Priority) | Good | 2015 | |
Fluoranthene | Good | 2015 | |
Other Pollutants | Does not require assessment | 2015 |
Protected areas
PA Name | Id | Directive | More information |
---|---|---|---|
Lower Thames (Cookham Egham Teddington) | SWSGZ4016 | Safeguard Zone | |
Kingsclere and Greywell | G145 | 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.