Twizell Burn from Source to Cong Burn Water Body
Moderate ecological status
Get Twizell Burn from Source to Cong Burn data
Attributes
- Water Body IDGB103024077590
- Water Body TypeRiver
- Hydromorphological designationheavily modified
- NGRNZ2207451243
- Surveillance Water BodyNo
- Catchment area18.964 km2
- Catchment area1896.38 ha
- Length9.725 km
Classifications
| Classification Item | 2019 |
|---|---|
| Ecological | Moderate |
| Biological quality elements | Moderate |
| Invertebrates | Moderate |
| Macrophytes and Phytobenthos Combined | Good |
| Macrophytes Sub Element | Good |
| Phytobenthos Sub Element | Good |
| Physico-chemical quality elements | Moderate |
| Ammonia (Phys-Chem) | Good |
| Dissolved oxygen | High |
| Phosphate | Moderate |
| 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 |
| Copper | High |
| Iron | High |
| Manganese | High |
| Zinc | High |
| Chemical | Fail |
| Priority hazardous substances | Fail |
| Benzo(a)pyrene | Good |
| Benzo(b)fluoranthene | Good |
| Benzo(g-h-i)perylene | Good |
| Benzo(k)fluoranthene | Good |
| Cadmium and Its Compounds | Good |
| Di(2-ethylhexyl)phthalate (Priority hazardous) | 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) | Good |
| Polybrominated diphenyl ethers (PBDE) | Fail |
| Tributyltin Compounds | Good |
| Priority substances | Good |
| Cypermethrin (Priority) | Good |
| Fluoranthene | Good |
| Lead and Its Compounds | Good |
| Nickel and Its Compounds | Good |
| Other Pollutants | Does not require assessment |
Investigations into classification status
| Classification Element | Cycle | Year | Status | Outcome |
|---|---|---|---|---|
| Zinc | 2 | 2013 | Moderate |
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 | Point source | Sewage discharge (intermittent) | Water Industry | Phosphate | Details |
| RNAG | Point source | Sewage discharge (continuous) | Water Industry | 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 | Invertebrates | Details |
| RNAG | Point source | Sewage discharge (intermittent) | Water Industry | Invertebrates | Details |
| RNAG | Point source | Misconnections | Water Industry | Invertebrates | Details |
| RNAG | measures delivered to address reason, awaiting recovery | Not applicable | No sector responsible | Polybrominated diphenyl ethers (PBDE) | Details |
| RNAG | Physical modification | Other (not in list, must add details in comments) | Urban and transport | Mitigation Measures Assessment | 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 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Urban and transport | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
| Water Industry | 0 | 4 | 1 | 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 | 4 | 1 | 0 | 0 | 0 | 0 |
Objectives
| Classification Item | Status | Year | Reasons |
|---|---|---|---|
| Ecological | Moderate | 2015 | Disproportionately expensive: Disproportionate burdens; Technically infeasible: No known technical solution is available |
| Biological quality elements | Moderate | 2015 | Technically infeasible: No known technical solution is available |
| Invertebrates | Moderate | 2015 | Technically infeasible: No known technical solution is available |
| Macrophytes and Phytobenthos Combined | Good | 2015 | |
| Physico-chemical quality elements | Moderate | 2015 | Disproportionately expensive: Disproportionate burdens; Technically infeasible: No known technical solution is available |
| Ammonia (Phys-Chem) | Good | 2021 | Disproportionately expensive: Disproportionate burdens |
| Dissolved oxygen | Good | 2015 | |
| Phosphate | Moderate | 2015 | Technically infeasible: No known technical solution is available |
| 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 | |
| Copper | High | 2015 | |
| Iron | High | 2015 | |
| Manganese | High | 2015 | |
| Zinc | High | 2015 | |
| Chemical | Good | 2063 | Natural conditions: Chemical status recovery time |
| Priority hazardous substances | Good | 2063 | Natural conditions: Chemical status recovery time |
| Benzo (b) and (k) fluoranthene | Good | 2015 | |
| Benzo (ghi) perelyene and indeno (123-cd) pyrene | Good | 2015 | |
| Benzo(a)pyrene | Good | 2015 | |
| Benzo(b)fluoranthene | Good | 2015 | |
| Benzo(g-h-i)perylene | Good | 2015 | |
| Benzo(k)fluoranthene | Good | 2015 | |
| Cadmium and Its Compounds | Good | 2015 | |
| Di(2-ethylhexyl)phthalate (Priority hazardous) | 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 | 2015 | |
| Polybrominated diphenyl ethers (PBDE) | Good | 2063 | Natural conditions: Chemical status recovery time |
| Tributyltin Compounds | Good | 2015 | |
| Priority substances | Good | 2015 | |
| Cypermethrin (Priority) | Good | 2015 | |
| Fluoranthene | Good | 2015 | |
| Lead and Its Compounds | Good | 2015 | |
| Nickel and Its Compounds | Good | 2015 | |
| Other Pollutants | Does not require assessment | 2015 |
Protected areas
| PA Name | Id | Directive | More information |
|---|---|---|---|
| Cong Burn from Twizell Burn to Wear NVZ | S240 | 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.