Roch (Spodden to Irwell) Water Body
Moderate ecological status
Get Roch (Spodden to Irwell) data
Attributes
- Water Body IDGB112069064600
- Water Body TypeRiver
- Hydromorphological designationheavily modified
- NGRSD8611011308
- Catchment area4257.36 ha
- Length21.658 km
- Catchment area42.574 km2
- Surveillance Water BodyNo
Classifications
Classification Item | 2019 |
---|---|
Ecological | Moderate |
Biological quality elements | Moderate |
Invertebrates | Moderate |
Macrophytes and Phytobenthos Combined | |
Macrophytes Sub Element | Poor |
Physico-chemical quality elements | Moderate |
Acid Neutralising Capacity | High |
Ammonia (Phys-Chem) | Moderate |
Dissolved oxygen | High |
Phosphate | Poor |
Temperature | High |
pH | High |
Supporting elements (Surface Water) | Moderate |
Mitigation Measures Assessment | Moderate or less |
Specific pollutants | High |
Iron | High |
Permethrin | High |
Chemical | Fail |
Priority hazardous substances | Fail |
Benzo(a)pyrene | Good |
Cadmium and Its Compounds | 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) | Fail |
Polybrominated diphenyl ethers (PBDE) | Fail |
Priority substances | Fail |
Cypermethrin (Priority) | Fail |
Fluoranthene | Good |
Pentachlorophenol | Good |
Other Pollutants | Does not require assessment |
Investigations into classification status
Classification Element | Cycle | Year | Status | Outcome |
---|---|---|---|---|
Ammonia (Phys-Chem) | 2 | 2015 | Good | Very certain there is a problem |
Ammonia (Phys-Chem) | 2 | 2016 | Good | Quite certain there is a problem |
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 | Unknown (pending investigation) | Unknown (pending investigation) | Sector under investigation | Perfluorooctane sulphonate (PFOS) | Details |
RNAG | measures delivered to address reason, awaiting recovery | Not applicable | No sector responsible | Polybrominated diphenyl ethers (PBDE) | Details |
RFD | Monitoring Site Changed (RFD only) | Not applicable | No sector responsible | Ammonia (Phys-Chem) | Details |
RNAG | Point source | Sewage discharge (continuous) | Water Industry | Ammonia (Phys-Chem) | Details |
RNAG | measures delivered to address reason, awaiting recovery | Not applicable | No sector responsible | Mercury and Its Compounds | Details |
RNAG | Physical modification | Other (not in list, must add details in comments) | Sector under investigation | Mitigation Measures Assessment | Details |
RNAG | Physical modification | Other (not in list, must add details in comments) | Sector under investigation | Mitigation Measures Assessment | Details |
RNAG | Point source | Sewage discharge (continuous) | Water Industry | Phosphate | Details |
RNAG | Diffuse source | Urbanisation - urban development | Urban and transport | Phosphate | Details |
RNAG | Diffuse source | Urbanisation - urban development | Urban and transport | Invertebrates | 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 | 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 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
Total | 2 | 1 | 0 | 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 | Good | 2027 - Low confidence | Disproportionately expensive: Disproportionate burdens; Technically infeasible: No known technical solution is available |
Invertebrates | Good | 2027 - Low confidence | Disproportionately expensive: Disproportionate burdens |
Macrophytes and Phytobenthos Combined | Not assessed | 2015 | Disproportionately expensive: Disproportionate burdens; Technically infeasible: No known technical solution is available |
Physico-chemical quality elements | Moderate | 2015 | Disproportionately expensive: Disproportionate burdens; Technically infeasible: No known technical solution is available |
Acid Neutralising Capacity | Good | 2015 | |
Ammonia (Phys-Chem) | Good | 2015 | |
Dissolved oxygen | Good | 2015 | |
Phosphate | Moderate | 2027 - Low confidence | Disproportionately expensive: Disproportionate burdens; Technically infeasible: No known technical solution is available |
Temperature | Good | 2015 | |
pH | Good | 2015 | |
Hydromorphological Supporting Elements | Not assessed | 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 | |
Iron | High | 2015 | |
Permethrin | High | 2015 | |
Chemical | Good | 2063 | Disproportionately expensive: Disproportionate burdens; 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 | |
Cadmium and Its Compounds | 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 | 2039 | Technically infeasible: No known technical solution is available |
Polybrominated diphenyl ethers (PBDE) | Good | 2063 | Natural conditions: Chemical status recovery time |
Priority substances | Good | 2027 - Low confidence | Disproportionately expensive: Disproportionate burdens |
Cypermethrin (Priority) | Good | 2027 - Low confidence | Disproportionately expensive: Disproportionate burdens |
Fluoranthene | Good | 2015 | |
Pentachlorophenol | Good | 2015 | |
Other Pollutants | Does not require assessment | 2015 |
Protected areas
PA Name | Id | Directive | More information |
---|---|---|---|
Rochdale Canal | UK0030266 | 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.