Valley Brook (Source to Englesea Brook) Water Body

Poor ecological status

Viewing latest data (Updated on 14 September 2021). Switch to draft river basin management plan data

Attributes

  • Water Body IDGB112068074630
  • Water Body TypeRiver
  • Hydromorphological designationnot designated artificial or heavily modified
  • NGRSJ7969754290
  • Surveillance Water BodyNo
  • Length22.676 km
  • Catchment area25.161 km2
  • Catchment area2516.13 ha

Classifications

Classification Item20132014201520162019
EcologicalModeratePoorPoorPoorPoor
Biological quality elementsModeratePoorPoorPoorPoor
InvertebratesPoorPoorPoorPoor
Macrophytes and Phytobenthos CombinedModerateModerateModeratePoorModerate
Physico-chemical quality elementsHighModerateModerateModerateModerate
Acid Neutralising CapacityHighHighHigh
Ammonia (Phys-Chem)ModerateHighHighModerate
Biochemical Oxygen Demand (BOD)High
Dissolved oxygenModerateHighHighGood
PhosphatePoorModerateModerateGood
TemperatureHighHighHighHigh
pHHighHighHighHighHigh
Hydromorphological Supporting ElementsSupports goodSupports goodSupports goodSupports goodSupports good
Hydrological RegimeSupports goodSupports goodSupports goodSupports goodDoes not support good
MorphologySupports goodSupports goodSupports goodSupports goodSupports good
Specific pollutantsHighHighModerateModerateHigh
Chromium (VI)High
CopperHighHighModerateModerateHigh
IronHigh
TriclosanHighHigh
ZincHighHighHighHigh
ChemicalGoodGoodGoodGoodFail
Priority hazardous substancesGoodGoodDoes not require assessmentDoes not require assessmentFail
Benzo(a)pyreneGood
Cadmium and Its CompoundsGoodGood
Di(2-ethylhexyl)phthalate (Priority hazardous)GoodGood
Dioxins and dioxin-like compoundsGood
Heptachlor and cis-Heptachlor epoxideGood
Hexabromocyclododecane (HBCDD)Good
HexachlorobenzeneGood
HexachlorobutadieneGood
Mercury and Its CompoundsFail
NonylphenolGoodGood
Perfluorooctane sulphonate (PFOS)Good
Polybrominated diphenyl ethers (PBDE)Fail
Tributyltin CompoundsGoodGood
Priority substancesGoodGoodGoodGoodGood
Cypermethrin (Priority hazardous)Good
FluorantheneGood
Lead and Its CompoundsGoodGoodGoodGoodGood
Nickel and Its CompoundsGoodGoodGoodGoodGood
Other PollutantsDoes not require assessmentDoes not require assessmentDoes not require assessmentDoes not require assessmentDoes not require assessment

Investigations into classification status

Classification ElementCycleYearStatusOutcome
Copper22015Moderate
Ammonia (Phys-Chem)22014Moderate
Dissolved oxygen22014Moderate
Dissolved oxygen22016High
Hydrological Regime22016Supports Good

Reasons for not achieving good (RNAG) and reasons for deterioration (RFD)

Reason TypeSWMIActivityCategoryClassification ElementMore information
RFDPoint sourceSewage discharge (continuous)Water IndustryMacrophytes and Phytobenthos CombinedDetails
RNAGPoint sourceSewage discharge (continuous)Water IndustryMacrophytes and Phytobenthos CombinedDetails
RNAGDiffuse sourceUrbanisation - urban developmentUrban and transportMacrophytes and Phytobenthos CombinedDetails
RNAGDiffuse sourcePoor Livestock ManagementAgriculture and rural land managementMacrophytes and Phytobenthos CombinedDetails
RNAGDiffuse sourcePoor soil managementAgriculture and rural land managementMacrophytes and Phytobenthos CombinedDetails
RNAGDiffuse sourcePoor nutrient managementAgriculture and rural land managementMacrophytes and Phytobenthos CombinedDetails
RNAGPoint sourceFarm/site infrastructureAgriculture and rural land managementMacrophytes and Phytobenthos CombinedDetails
RFDSuspect dataNot applicableNo sector responsibleMacrophytes and Phytobenthos CombinedDetails
RNAGDiffuse sourcePoor nutrient managementAgriculture and rural land managementPhosphateDetails
RNAGDiffuse sourcePoor Livestock ManagementAgriculture and rural land managementPhosphateDetails
RFDPoint sourceSewage discharge (continuous)Water IndustryPhosphateDetails
RNAGDiffuse sourceUrbanisation - urban developmentUrban and transportPhosphateDetails
RNAGPoint sourceFarm/site infrastructureAgriculture and rural land managementPhosphateDetails
RNAGDiffuse sourcePoor soil managementAgriculture and rural land managementPhosphateDetails
RFDUnknown (pending investigation)Unknown (pending investigation)Sector under investigationAmmonia (Phys-Chem)Details
RNAGPoint sourceSewage discharge (continuous)Water IndustryAmmonia (Phys-Chem)Details
RFDHigh to Good deterioration, no action required (RFD only)Not applicableNo sector responsibleDissolved oxygenDetails
RNAGPoint sourceSewage discharge (continuous)Water IndustryDissolved oxygenDetails
RNAGFlowUnknown (pending investigation)Sector under investigationHydrological RegimeDetails
RNAGDiffuse sourceUrbanisation - urban developmentUrban and transportInvertebratesDetails
RNAGPoint sourceSewage discharge (continuous)Water IndustryPhosphateDetails

Reasons for not achieving good status by business sector

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 in water bodies, there may be more than one reason in a single water body.

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 management0000040
Industry0000000
Mining and quarrying0000000
Navigation0000000
Urban and transport0010000
Water Industry0200000
Local & central government0000000
Domestic general public0000000
Recreation0000000
Waste treatment and disposal0000000
Other0000000
No sector responsible0000000
Sector under investigation0000000
Total0210040

Objectives

Classification ItemStatusYearReasons
EcologicalGood2027Disproportionately expensive: Disproportionate burdens;
Technically infeasible: Cause of adverse impact unknown
Biological quality elementsGood2027Disproportionately expensive: Disproportionate burdens
InvertebratesGood2027Disproportionately expensive: Disproportionate burdens
Macrophytes and Phytobenthos CombinedGood2027Disproportionately expensive: Disproportionate burdens
Physico-chemical quality elementsGood2027Disproportionately expensive: Disproportionate burdens
Acid Neutralising CapacityGood2015
Ammonia (Phys-Chem)Good2015
Dissolved oxygenGood2015
PhosphateGood2027Disproportionately expensive: Disproportionate burdens
TemperatureGood2015
pHGood2015
Hydromorphological Supporting ElementsSupports good2015
Hydrological RegimeSupports good2015
Supporting elements (Surface Water)Not assessed2015
Specific pollutantsHigh2027Technically infeasible: Cause of adverse impact unknown
CopperHigh2027Technically infeasible: Cause of adverse impact unknown
ChemicalGood2015
Priority hazardous substancesDoes not require assessment2015
Priority substancesGood2015
Lead and Its CompoundsGood2015
Nickel and Its CompoundsGood2015
Other PollutantsDoes not require assessment2015

Protected areas

PA NameIdDirectiveTypeMore information
River Weaver (Dane to Frodsham) NVZ S636S636Nitrates Directive

Upstream water bodies