Lower Brent Water Body
Moderate ecological status
Get Lower Brent data
Attributes
- Water Body IDGB106039023590
- Water Body TypeRiver
- Hydromorphological designationheavily modified
- NGRTQ1599182665
- Catchment area71.827 km2
- Surveillance Water BodyYes
- Length20.475 km
- Catchment area7182.744 ha
Classifications
Classification Item | 2019 |
---|---|
Ecological | Moderate |
Biological quality elements | Bad |
Fish | Poor |
Invertebrates | Bad |
Macrophytes and Phytobenthos Combined | Good |
Macrophytes Sub Element | Moderate |
Phytobenthos Sub Element | Good |
Physico-chemical quality elements | Moderate |
Acid Neutralising Capacity | High |
Ammonia (Phys-Chem) | Moderate |
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 |
Specific pollutants | High |
Chlorothalonil | High |
Copper | High |
Pendimethalin | High |
Triclosan | High |
Chemical | Fail |
Priority hazardous substances | Fail |
Benzo(a)pyrene | Good |
Benzo(b)fluoranthene | Good |
Benzo(g-h-i)perylene | Fail |
Benzo(k)fluoranthene | 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 | Good |
Nonylphenol | Good |
Perfluorooctane sulphonate (PFOS) | Good |
Polybrominated diphenyl ethers (PBDE) | Fail |
Quinoxyfen | Good |
Tributyltin Compounds | Good |
Priority substances | Good |
Aclonifen | Good |
Alachlor | Good |
Bifenox | Good |
Cybutryne | Good |
Cypermethrin (Priority) | Good |
Dichlorvos (Priority) | Good |
Fluoranthene | Good |
Terbutryn | Good |
Other Pollutants | 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 | Physical modification | Urbanisation - urban development | Urban and transport | Fish | Details |
RNAG | Physical modification | Inland boating and structures | Navigation | Fish | Details |
RNAG | Physical modification | Flood protection - structures | Urban and transport | Fish | Details |
RNAG | Point source | Misconnections | Domestic General Public | Invertebrates | Details |
RNAG | Diffuse source | Urbanisation - urban development | Urban and transport | Invertebrates | Details |
RNAG | Diffuse source | Urbanisation - urban development | Urban and transport | Macrophytes and Phytobenthos Combined | Details |
RNAG | Point source | Sewage discharge (intermittent) | Water Industry | Macrophytes and Phytobenthos Combined | Details |
RFD | Point source | Misconnections | Domestic General Public | Invertebrates | Details |
RNAG | Diffuse source | Urbanisation - urban development | Urban and transport | Dissolved oxygen | Details |
RFD | Diffuse source | Urbanisation - urban development | Urban and transport | Invertebrates | Details |
RNAG | Point source | Misconnections | Domestic General Public | Macrophytes and Phytobenthos Combined | Details |
RNAG | Physical modification | Urbanisation - urban development | Urban and transport | Invertebrates | 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 | Ammonia (Phys-Chem) | Details |
RNAG | Physical modification | Inland boating and structures | Navigation | Invertebrates | Details |
RNAG | Unknown (pending investigation) | Unknown (pending investigation) | Sector under investigation | Benzo(g-h-i)perylene | Details |
RNAG | Physical modification | Flood protection - structures | Urban and transport | Invertebrates | Details |
RNAG | Physical modification | Other (not in list, must add details in comments) | Local and Central Government | Mitigation Measures Assessment | Details |
RNAG | Point source | Misconnections | Domestic General Public | Ammonia (Phys-Chem) | Details |
RNAG | Physical modification | Other (not in list, must add details in comments) | Recreation | Mitigation Measures Assessment | Details |
RNAG | Point source | Sewage discharge (intermittent) | Water Industry | Ammonia (Phys-Chem) | Details |
RNAG | measures delivered to address reason, awaiting recovery | Not applicable | No sector responsible | Polybrominated diphenyl ethers (PBDE) | Details |
RNAG | Point source | Sewage discharge (intermittent) | Water Industry | Phosphate | Details |
RNAG | Point source | Misconnections | Domestic General Public | Phosphate | Details |
RNAG | Diffuse source | Urbanisation - urban development | Urban and transport | Phosphate | Details |
RNAG | Point source | Use of restricted substance | Navigation | Tributyltin Compounds | Details |
RNAG | Point source | Sewage discharge (intermittent) | Water Industry | Dissolved oxygen | Details |
RNAG | Diffuse source | Contaminated water body bed sediments | Urban and transport | Tributyltin Compounds | Details |
RNAG | Point source | Misconnections | Domestic General Public | 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 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Industry | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Mining and quarrying | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Navigation | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
Urban and transport | 5 | 0 | 4 | 0 | 0 | 0 | 0 |
Water Industry | 0 | 3 | 0 | 0 | 0 | 0 | 0 |
Local & central government | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
Domestic general public | 0 | 0 | 4 | 0 | 0 | 0 | 0 |
Recreation | 1 | 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 | 9 | 3 | 8 | 0 | 0 | 0 | 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 | 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 |
Macrophytes and Phytobenthos Combined | Good | 2015 | |
Physico-chemical quality elements | Good | 2027 - Low confidence | Disproportionately expensive: Disproportionate burdens |
Acid Neutralising Capacity | Good | 2015 | |
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 | |
Chlorothalonil | High | 2015 | |
Copper | High | 2015 | |
Pendimethalin | 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 | |
Benzo(b)fluoranthene | Good | 2015 | |
Benzo(g-h-i)perylene | Good | 2033 | Technically infeasible: No known technical solution is available |
Benzo(k)fluoranthene | 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 | 2015 | |
Mercury and Its Compounds | Good | 2015 | |
Nonylphenol | 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 | |
Cybutryne | Good | 2015 | |
Cypermethrin (Priority) | Good | 2015 | |
Dichlorvos (Priority) | Good | 2015 | |
Fluoranthene | Good | 2015 | |
Terbutryn | 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.