STOUR (KENT) Water Body

Moderate ecological status

Attributes

  • Water Body IDGB520704004700
  • Water Body TypeTransitional Water
  • Hydromorphological designationheavily modified
  • NGRTR3356461222
  • Surveillance Water BodyNo
  • Surface area5.113 km2
  • Surface area511.259 ha

Classifications

Classification Item2019
EcologicalModerate
Biological quality elementsModerate
MacroalgaeHigh
Opportunistic MacroalgaeHigh
PhytoplanktonModerate
Physico-chemical quality elementsModerate
Dissolved Inorganic NitrogenModerate
Dissolved oxygenHigh
Hydromorphological Supporting ElementsSupports good
Hydrological RegimeSupports good
Supporting elements (Surface Water)Moderate
Mitigation Measures AssessmentModerate or less
Specific pollutantsHigh
ArsenicHigh
CopperHigh
DimethoateHigh
IronHigh
ZincHigh
ChemicalFail
Priority hazardous substancesFail
Benzo(a)pyreneGood
Cadmium and Its CompoundsGood
Dioxins and dioxin-like compoundsGood
Heptachlor and cis-Heptachlor epoxideGood
Hexabromocyclododecane (HBCDD)Good
HexachlorobenzeneGood
HexachlorobutadieneGood
HexachlorocyclohexaneGood
Mercury and Its CompoundsFail
Perfluorooctane sulphonate (PFOS)Good
Polybrominated diphenyl ethers (PBDE)Fail
Priority substancesGood
1,2-dichloroethaneGood
FluorantheneGood
Lead and Its CompoundsGood
Nickel and Its CompoundsGood
PentachlorophenolGood
TrichlorobenzenesGood
TrichloromethaneGood
Other PollutantsGood
Aldrin, Dieldrin, Endrin & IsodrinGood
Carbon TetrachlorideGood
DDT TotalGood
TetrachloroethyleneGood
TrichloroethyleneGood
para - para DDTGood

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
RNAGDiffuse sourcePoor nutrient managementAgriculture and rural land managementPhytoplanktonDetails
RNAGPoint sourceSewage discharge (continuous)Water IndustryPhytoplanktonDetails
RNAGmeasures delivered to address reason, awaiting recoveryNot applicableNo sector responsibleMercury and Its CompoundsDetails
RNAGmeasures delivered to address reason, awaiting recoveryNot applicableNo sector responsiblePolybrominated diphenyl ethers (PBDE)Details
RNAGPoint sourceSewage discharge (continuous)Water IndustryDissolved Inorganic NitrogenDetails
RNAGPhysical modificationOther (not in list, must add details in comments)Local and Central GovernmentMitigation 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 management0000010
Industry0000000
Mining and quarrying0000000
Navigation0000000
Urban and transport0000000
Water Industry0200000
Local & central government1000000
Domestic general public0000000
Recreation0000000
Waste treatment and disposal0000000
Other0000000
No sector responsible0000000
Sector under investigation0000000
Total1200010

Objectives

Classification ItemStatusYearReasons
EcologicalModerate2015Disproportionately expensive: Disproportionate burdens;
Disproportionately expensive: Unfavourable balance of costs and benefits
Biological quality elementsGood2027 - Low confidenceDisproportionately expensive: Disproportionate burdens
MacroalgaeGood2015
PhytoplanktonGood2027 - Low confidenceDisproportionately expensive: Disproportionate burdens
Physico-chemical quality elementsModerate2015Disproportionately expensive: Unfavourable balance of costs and benefits
Dissolved Inorganic NitrogenModerate2015Disproportionately expensive: Unfavourable balance of costs and benefits
Dissolved oxygenGood2015
Hydromorphological Supporting ElementsSupports good2015
Hydrological RegimeSupports good2015
Supporting elements (Surface Water)Good2027 - Low confidenceDisproportionately expensive: Disproportionate burdens
Mitigation Measures AssessmentGood2027 - Low confidenceDisproportionately expensive: Disproportionate burdens
Specific pollutantsHigh2015
ArsenicHigh2015
CopperHigh2015
DimethoateHigh2015
IronHigh2015
ZincHigh2015
ChemicalGood2063Natural conditions: Chemical status recovery time
Priority hazardous substancesGood2063Natural conditions: Chemical status recovery time
Benzo(a)pyreneGood2015
Cadmium and Its CompoundsGood2015
Dioxins and dioxin-like compoundsGood2015
Heptachlor and cis-Heptachlor epoxideGood2021Natural conditions: Chemical status recovery time
Hexabromocyclododecane (HBCDD)Good2015
HexachlorobenzeneGood2015
HexachlorobutadieneGood2015
HexachlorocyclohexaneGood2015
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
1,2-dichloroethaneGood2015
FluorantheneGood2015
Lead and Its CompoundsGood2015
Nickel and Its CompoundsGood2015
PentachlorophenolGood2015
TrichlorobenzenesGood2015
TrichloromethaneGood2015
Other PollutantsGood2015
Aldrin, Dieldrin, Endrin & IsodrinGood2015
Carbon TetrachlorideGood2015
DDT TotalGood2015
TetrachloroethyleneGood2015
TrichloroethyleneGood2015
para - para DDTGood2015

Protected areas

PA NameIdDirectiveMore information
Thanet Coast & Sandwich BayUK9012071Special Protection AreaNatural England
Thanet Coast & Sandwich BayUK11070Ramsar SiteNatural England
Sandwich BayUK0013077Special Area of ConservationNatural England
StodmarshUK9012121Special Protection AreaNatural England
StodmarshUK11066Ramsar SiteNatural England
StodmarshUK0030283Special Area of ConservationNatural England
River Great StourUKENRI14Urban Waste Water Treatment Directive
Little StourUKENRI126Urban Waste Water Treatment Directive
Thanet CoastUK0013107Special Area of ConservationNatural 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.

Monitoring SiteCycle 1Cycle 2Cycle 3
GREAT STOUR SPORTS GROUND H/W E00012022013
GREAT STOUR SPORTS GROUND L/W E00012012013, 20122016, 2015
PEGWELL BAY (SURFACE) E00013262010, 2013, 2011, 20122015
GREAT STOUR GEGB FOOTBRIDGE E00012282010, 2013, 2011, 2009, 2012
DOWNSTREAM MINSTER STW (EMZ) E00012372010, 2013, 2011, 2012
GREAT STOUR PLUCKS GUTTER E00012462010, 2009, 2011, 2012, 2013
GREAT STOUR - NEWINGS BOATYARD E00045202013, 2009, 2011, 2012, 2010
GREAT STOUR GROVE FERRY E00012502011, 2010, 20132016

Downstream water bodies