Dozmary Pool Water Body
Moderate ecological status
Get Dozmary Pool data
Attributes
- Water Body IDGB30846232
- Water Body TypeLake
- Hydromorphological designationnot designated artificial or heavily modified
- NGRSX1941674468
- Surface area0.149 km2
- Altitude268 m
- Mean depth0.4 m
- Surveillance Water BodyYes
- Surface area14.916 ha
- Catchment area58 ha
Classifications
Classification Item | 2019 |
---|---|
Ecological | Moderate |
Biological quality elements | Moderate |
Chironomids (CPET) | High |
Macrophytes and Phytobenthos Combined | Moderate |
Macrophytes Sub Element | High |
Phytobenthos Sub Element | Moderate |
Phytoplankton | Moderate |
littoral Invertebrates | Good |
Physico-chemical quality elements | Moderate |
Acid Neutralising Capacity | High |
Ammonia (Phys-Chem) | High |
Salinity | High |
Total Nitrogen | Good |
Total Phosphorus | Bad |
Hydromorphological Supporting Elements | Supports good |
Hydrological Regime | High |
Morphology | Supports good |
Supporting elements (Surface Water) | Moderate |
Expert Judgement | Moderate |
Specific pollutants | High |
Chlorothalonil | High |
Chromium (VI) | High |
Copper | High |
Diazinon | High |
Dimethoate | High |
Iron | High |
Manganese | High |
Pendimethalin | 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 |
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 | Fail |
Nonylphenol | Good |
Pentachlorobenzene | Good |
Perfluorooctane sulphonate (PFOS) | Good |
Polybrominated diphenyl ethers (PBDE) | Fail |
Quinoxyfen | Good |
Tributyltin Compounds | Good |
Priority substances | Good |
1,2-dichloroethane | Good |
Aclonifen | Good |
Alachlor | Good |
Benzene | Good |
Bifenox | Good |
Cybutryne | Good |
Dichloromethane | Good |
Dichlorvos (Priority) | Good |
Fluoranthene | Good |
Lead and Its Compounds | Good |
Nickel and Its Compounds | Good |
Terbutryn | Good |
Trichloromethane | Good |
Other Pollutants | Good |
Carbon Tetrachloride | Good |
DDT Total | Good |
para - para DDT | Good |
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 |
---|---|---|---|---|---|
RNAG | Diffuse source | Poor Livestock Management | Agriculture and rural land management | Macrophytes and Phytobenthos Combined | Details |
RNAG | Diffuse source | Riparian/in-river activities (inc bankside erosion) | Agriculture and rural land management | Total Phosphorus | Details |
RNAG | Other pressures | Internal nutrient load (lakes only) | No sector responsible | Total Phosphorus | Details |
RNAG | Diffuse source | Poor Livestock Management | Agriculture and rural land management | Total Phosphorus | Details |
RNAG | Diffuse source | Riparian/in-river activities (inc bankside erosion) | Agriculture and rural land management | Macrophytes and Phytobenthos Combined | Details |
RNAG | Other pressures | Internal nutrient load (lakes only) | No sector responsible | Macrophytes and Phytobenthos Combined | Details |
RNAG | measures delivered to address reason, awaiting recovery | Not applicable | No sector responsible | Polybrominated diphenyl ethers (PBDE) | Details |
RNAG | measures delivered to address reason, awaiting recovery | Not applicable | No sector responsible | Mercury and Its Compounds | 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 | 4 | 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 | 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 | 0 | 0 | 0 | 0 | 0 | 4 | 0 |
Objectives
Classification Item | Status | Year | Reasons |
---|---|---|---|
Ecological | Good | 2027 - Low confidence | Disproportionately expensive: Disproportionate burdens |
Biological quality elements | Good | 2015 | |
Chironomids (CPET) | Good | 2015 | |
Macrophytes and Phytobenthos Combined | Good | 2015 | |
Phytoplankton | Good | 2015 | |
littoral Invertebrates | Good | 2015 | |
Physico-chemical quality elements | Good | 2027 - Low confidence | Disproportionately expensive: Disproportionate burdens |
Acid Neutralising Capacity | Good | 2015 | |
Ammonia (Phys-Chem) | Good | 2015 | |
Dissolved oxygen | Good | 2015 | |
Salinity | Good | 2015 | |
Total Nitrogen | Good | 2015 | |
Total Phosphorus | Good | 2027 - Low confidence | Disproportionately expensive: Disproportionate burdens |
Hydromorphological Supporting Elements | Supports good | 2015 | |
Hydrological Regime | Supports good | 2015 | |
Supporting elements (Surface Water) | Good | 2027 - Low confidence | Disproportionately expensive: Disproportionate burdens |
Expert Judgement | Good | 2027 - Low confidence | Disproportionately expensive: Disproportionate burdens |
Specific pollutants | High | 2015 | |
Chlorothalonil | High | 2015 | |
Chromium (VI) | High | 2015 | |
Copper | High | 2015 | |
Diazinon | High | 2015 | |
Dimethoate | High | 2015 | |
Iron | High | 2015 | |
Manganese | High | 2015 | |
Pendimethalin | 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(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 | |
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 | 2040 | Natural conditions: Chemical status recovery time |
Nonylphenol | Good | 2015 | |
Pentachlorobenzene | 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 | |
1,2-dichloroethane | Good | 2015 | |
Aclonifen | Good | 2015 | |
Alachlor | Good | 2015 | |
Benzene | Good | 2015 | |
Bifenox | Good | 2015 | |
Cybutryne | Good | 2015 | |
Dichloromethane | Good | 2015 | |
Dichlorvos (Priority) | Good | 2015 | |
Fluoranthene | Good | 2015 | |
Lead and Its Compounds | Good | 2015 | |
Nickel and Its Compounds | Good | 2015 | |
Terbutryn | Good | 2015 | |
Trichloromethane | Good | 2015 | |
Other Pollutants | Good | 2015 | |
Carbon Tetrachloride | Good | 2015 | |
DDT Total | Good | 2015 | |
para - para DDT | Good | 2015 |
Protected areas
PA Name | Id | Directive | More information |
---|---|---|---|
Lower River Fowey | SWSGZ5017 | Safeguard Zone | |
Colliford Lake | SWSGZ5109 | Safeguard Zone |
Monitoring sites which have been used to classify this water body
Shows which sites were used for classification for which years within each cycle.