ESK (E) Water Body
Moderate ecological status
Get ESK (E) data
Attributes
- Water Body IDGB510402703400
- Water Body TypeTransitional Water
- Hydromorphological designationheavily modified
- NGRNZ8997510347
- Surface area31.532 ha
- Surface area0.315 km2
- Surveillance Water BodyYes
Classifications
Classification Item | 2019 |
---|---|
Ecological | Moderate |
Biological quality elements | Moderate |
Fish | Moderate |
Invertebrates | Moderate |
Infaunal Quality Index | Moderate |
Macroalgae | High |
Fucoid Extent | High |
Phytoplankton | High |
Physico-chemical quality elements | Moderate |
Dissolved Inorganic Nitrogen | Moderate |
Dissolved oxygen | High |
Hydromorphological Supporting Elements | Supports good |
Hydrological Regime | Supports good |
Supporting elements (Surface Water) | Moderate |
Mitigation Measures Assessment | Moderate or less |
Specific pollutants | High |
Arsenic | High |
Chromium (VI) | High |
Copper | High |
Iron | High |
Un-ionised ammonia | High |
Zinc | High |
Chemical | Fail |
Priority hazardous substances | Fail |
Anthracene | Good |
Benzo(a)pyrene | Good |
Benzo(b)fluoranthene | Good |
Benzo(g-h-i)perylene | Fail |
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 | Fail |
Priority substances | Good |
Aclonifen | Good |
Alachlor | Good |
Bifenox | Good |
Fluoranthene | Good |
Lead and Its Compounds | Good |
Napthalene | Good |
Nickel and Its Compounds | Good |
Octylphenol | Good |
Trichloromethane | Good |
Other Pollutants | Good |
Aldrin, Dieldrin, Endrin & Isodrin | 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 | Unknown (pending investigation) | Unknown (pending investigation) | Sector under investigation | Benzo(g-h-i)perylene | Details |
RNAG | Diffuse source | Poor nutrient management | Agriculture and rural land management | Dissolved Inorganic Nitrogen | Details |
RNAG | Physical modification | Ports and harbours - operational management | Navigation | Invertebrates | Details |
RNAG | Physical modification | Other (not in list, must add details in comments) | Sector under investigation | Mitigation Measures Assessment | 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 |
RNAG | Point source | Misconnections | Domestic General Public | Invertebrates | Details |
RNAG | Physical modification | Other (not in list, must add details in comments) | Sector under investigation | Mitigation Measures Assessment | Details |
RNAG | Point source | Incidents | Water Industry | Invertebrates | Details |
RNAG | Suspect data | Not applicable | No sector responsible | Fish | Details |
RNAG | Point source | Contaminated land | Industry | Tributyltin Compounds | Details |
RNAG | Diffuse source | Other (not in list, must add details in comments) | Navigation | Tributyltin 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 | 0 | 0 |
Industry | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
Mining and quarrying | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Navigation | 1 | 0 | 1 | 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 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
Total | 3 | 0 | 2 | 0 | 0 | 0 | 0 |
Objectives
Classification Item | Status | Year | Reasons |
---|---|---|---|
Ecological | Moderate | 2021 | 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 | 2021 | 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 | Good | 2027 - Low confidence | Disproportionately expensive: Disproportionate burdens |
Invertebrates | Moderate | 2021 | Good status prevented by A/HMWB designated use: Action to get biological element to good would have significant adverse impact on use |
Macroalgae | Good | 2015 | |
Phytoplankton | Good | 2015 | |
Physico-chemical quality elements | Good | 2027 - Low confidence | Disproportionately expensive: Disproportionate burdens |
Dissolved Inorganic Nitrogen | Good | 2027 - Low confidence | Disproportionately expensive: Disproportionate burdens |
Dissolved oxygen | 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 | |
Arsenic | High | 2015 | |
Chromium (VI) | High | 2015 | |
Copper | High | 2015 | |
Iron | High | 2015 | |
Un-ionised ammonia | High | 2015 | |
Zinc | 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 | Disproportionately expensive: Disproportionate burdens; Natural conditions: Chemical status recovery time; Technically infeasible: No known technical solution is available |
Anthracene | Good | 2015 | |
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 | |
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 | 2027 - Low confidence | Disproportionately expensive: Disproportionate burdens |
Priority substances | Good | 2015 | |
Aclonifen | Good | 2015 | |
Alachlor | Good | 2015 | |
Bifenox | Good | 2015 | |
Fluoranthene | Good | 2015 | |
Lead and Its Compounds | Good | 2015 | |
Napthalene | Good | 2015 | |
Nickel and Its Compounds | Good | 2015 | |
Octylphenol | Good | 2015 | |
Trichloromethane | Good | 2015 | |
Other Pollutants | Good | 2015 | |
Aldrin, Dieldrin, Endrin & Isodrin | Good | 2015 | |
para - para DDT | Good | 2015 |
Protected areas
No data to show
Monitoring sites which have been used to classify this water body
Shows which sites were used for classification for which years within each cycle.