St Neot River Water Body

Moderate ecological status

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Attributes

  • Water Body IDGB108048007640
  • Water Body TypeRiver
  • Hydromorphological designationheavily modified
  • NGRSX1838170094
  • Catchment area24.112 km2
  • Surveillance Water BodyNo
  • Length14.248 km
  • Catchment area2411.169 ha

Classifications

Classification Item2019
EcologicalModerate
Biological quality elementsModerate
FishModerate
InvertebratesHigh
Macrophytes and Phytobenthos CombinedGood
Phytobenthos Sub ElementGood
Physico-chemical quality elementsGood
Acid Neutralising CapacityHigh
Ammonia (Phys-Chem)High
Dissolved oxygenHigh
PhosphateHigh
TemperatureGood
pHHigh
Supporting elements (Surface Water)Moderate
Mitigation Measures AssessmentModerate or less
Specific pollutantsHigh
CopperHigh
IronHigh
ManganeseHigh
ZincHigh
ChemicalFail
Priority hazardous substancesFail
Benzo(a)pyreneGood
Benzo(b)fluorantheneGood
Benzo(g-h-i)peryleneGood
Benzo(k)fluorantheneGood
Cadmium and Its CompoundsGood
Dioxins and dioxin-like compoundsGood
Heptachlor and cis-Heptachlor epoxideGood
Hexabromocyclododecane (HBCDD)Good
HexachlorobenzeneGood
HexachlorobutadieneGood
Mercury and Its CompoundsFail
Perfluorooctane sulphonate (PFOS)Good
Polybrominated diphenyl ethers (PBDE)Fail
Priority substancesGood
Cypermethrin (Priority)Good
FluorantheneGood
Lead and Its CompoundsGood
Nickel and Its CompoundsGood
Other PollutantsDoes not require assessment

Why do all water bodies have a chemical status of fail?

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 TypeSWMIActivityCategoryClassification ElementMore information
RNAGPoint sourceIncidentsSector under investigationFishDetails
RNAGFlowRegulating Reservoir Flow RegimeWater IndustryFishDetails
RNAGmeasures delivered to address reason, awaiting recoveryNot applicableNo sector responsiblePolybrominated diphenyl ethers (PBDE)Details
RNAGmeasures delivered to address reason, awaiting recoveryNot applicableNo sector responsibleMercury and Its CompoundsDetails
RNAGPhysical modificationOther (not in list, must add details in comments)Water IndustryMitigation Measures AssessmentDetails

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 issuePhysical modificationsPollution from waste waterPollution from towns, cities and transportChanges to the natural flow and level of waterInvasive non-native speciesPollution from rural areasPollution from abandoned mines
Agriculture and rural land management0000000
Industry0000000
Mining and quarrying0000000
Navigation0000000
Urban and transport0000000
Water Industry1001000
Local & central government0000000
Domestic general public0000000
Recreation0000000
Waste treatment and disposal0000000
Other0000000
No sector responsible0000000
Sector under investigation0000000
Total1001000

Objectives

Classification ItemStatusYearReasons
EcologicalGood2027 - Low confidenceDisproportionately 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 elementsModerate2021Good status prevented by A/HMWB designated use: Action to get biological element to good would have significant adverse impact on use
FishModerate2021Good status prevented by A/HMWB designated use: Action to get biological element to good would have significant adverse impact on use
InvertebratesGood2015
Macrophytes and Phytobenthos CombinedGood2015
Physico-chemical quality elementsGood2015
Acid Neutralising CapacityGood2015
Ammonia (Phys-Chem)Good2015
Dissolved oxygenGood2015
PhosphateGood2015
TemperatureGood2015
pHGood2015
Hydromorphological Supporting ElementsNot assessed2015
Supporting elements (Surface Water)Good2027 - Low confidenceDisproportionately expensive: Disproportionate burdens
Mitigation Measures AssessmentGood2027 - Low confidenceDisproportionately expensive: Disproportionate burdens
Specific pollutantsHigh2015
CopperHigh2015
IronHigh2015
ManganeseHigh2015
ZincHigh2015
ChemicalGood2063Natural conditions: Chemical status recovery time
Priority hazardous substancesGood2063Natural conditions: Chemical status recovery time
Benzo(a)pyreneGood2015
Benzo(b)fluorantheneGood2015
Benzo(g-h-i)peryleneGood2015
Benzo(k)fluorantheneGood2015
Cadmium and Its CompoundsGood2015
Dioxins and dioxin-like compoundsGood2015
Heptachlor and cis-Heptachlor epoxideGood2015
Hexabromocyclododecane (HBCDD)Good2015
HexachlorobenzeneGood2015
HexachlorobutadieneGood2015
Mercury and Its CompoundsGood2040Natural conditions: Chemical status recovery time
Perfluorooctane sulphonate (PFOS)Good2015
Polybrominated diphenyl ethers (PBDE)Good2063Natural conditions: Chemical status recovery time
Priority substancesGood2015
Cypermethrin (Priority)Good2015
FluorantheneGood2015
Lead and Its CompoundsGood2015
Nickel and Its CompoundsGood2015
Other PollutantsDoes not require assessment2015

Protected areas

PA NameIdDirectiveMore information
Lower River FoweySWSGZ5017Safeguard Zone
Colliford LakeSWSGZ5109Safeguard 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.

Monitoring SiteCycle 1Cycle 2Cycle 3
COLLIFORD LAKE DAM SURFACE 815227762010, 2011, 2009, 2012
ST. NEOT RIVER AT COLLIFORD BRIDGE 815227462014, 20092015, 2016, 2014, 20192019
FOWEY/ST NEOT/MILLHOUSE/ 127082010, 2009
FOWEY/ST NEOT/PENGELLY/ 122112009
160961 16096120142016, 2014, 2015
FOWEY/ST NEOT/PENGELLY DIP SITE 4/ 302882011, 2012, 2010
ST. NEOT RIVER AT TWO WATERS FOOT 815227032012, 2013, 2010, 2011, 2014, 20092015, 2013, 2016, 2014, 20192019
FOWEY/ST NEOT/PENGELLY BRIDGE/ 84212013, 2014, 2012, 20092015, 2013, 2016, 2019, 20142019
10704 1070420142014, 2016, 2015
FOWEY/ST NEOT/HOLY WELL/ 127092011, 2012, 2010
FOWEY/ST NEOT/LAMPEN/ 84192009
FOWEY/ST NEOT/ST. NEOT/ 84182013, 2014, 2012, 20092015, 2013, 2016, 2019, 20142019
FOWEY/ST NEOT/CARNGLAZE/ 84202011, 2012, 2010, 2009
10690 106902010, 2013, 2011, 2014, 2012, 200920192019
FOWEY/ST NEOT/U/S COLLIFORD FALLS/ 84172011, 2014, 2012, 2010, 20092015, 2016, 2019, 20142019

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