Birkin Brook - Source to Mobberley Brook Water Body

Poor ecological status

Updated on 14 September 2021 (Live data).

Attributes

  • Water Body IDGB112069061340
  • Water Body TypeRiver
  • Hydromorphological designationnot designated artificial or heavily modified
  • NGRSJ7652183294
  • Surveillance Water BodyYes
  • Length25.76 km
  • Catchment area42.533 km2
  • Catchment area4253.3 ha

Classifications

Classification Item20132014201520162019
EcologicalPoorPoorPoorPoorPoor
Biological quality elementsPoorPoorPoorPoorPoor
FishPoorPoorPoorPoorModerate
InvertebratesHighModerateGoodGoodGood
Macrophytes and Phytobenthos CombinedModerateModeratePoorPoor
Physico-chemical quality elementsModerateModerateModerateModerateModerate
Acid Neutralising CapacityHigh
Ammonia (Phys-Chem)HighHighHighHighHigh
Biochemical Oxygen Demand (BOD)HighHighHighHigh
Dissolved oxygenHighHighHighHighHigh
PhosphatePoorPoorModerateModerateModerate
TemperatureHighHighHighHighHigh
pHHighHighHighHighHigh
Hydromorphological Supporting ElementsSupports goodSupports goodSupports goodSupports goodSupports good
Hydrological RegimeSupports goodSupports goodSupports goodSupports goodSupports good
MorphologySupports goodSupports goodSupports goodSupports goodSupports good
Specific pollutantsHighHighHighHighHigh
ChlorothalonilHigh
Chromium (VI)High
CopperHighHighHighHighHigh
IronHigh
ManganeseHigh
PendimethalinHigh
TriclosanHighHigh
ZincHighHighHigh
ChemicalGoodGoodGoodGoodFail
Priority hazardous substancesGoodGoodGoodGoodFail
Benzo(a)pyreneGood
Benzo(b)fluorantheneFail
Benzo(g-h-i)peryleneFail
Benzo(k)fluorantheneFail
Cadmium and Its CompoundsGoodGoodGood
Di(2-ethylhexyl)phthalate (Priority hazardous)GoodGood
Dioxins and dioxin-like compoundsGood
Heptachlor and cis-Heptachlor epoxideGood
Hexabromocyclododecane (HBCDD)Good
HexachlorobenzeneGood
HexachlorobutadieneGood
HexachlorocyclohexaneGood
Mercury and Its CompoundsFail
NonylphenolGoodGoodGoodGoodGood
PentachlorobenzeneGood
Perfluorooctane sulphonate (PFOS)Good
Polybrominated diphenyl ethers (PBDE)Fail
QuinoxyfenGood
Tributyltin CompoundsGoodGoodGood
Priority substancesGoodGoodGoodGoodGood
1,2-dichloroethaneGoodGoodGood
AclonifenGood
AlachlorGood
BenzeneGoodGoodGood
BifenoxGood
Cybutryne (IrgarolĀ®)Good
Cypermethrin (Priority hazardous)Good
DichloromethaneGoodGoodGood
Dichlorvos (Priority)Good
FluorantheneGood
Lead and Its CompoundsGoodGoodGood
Nickel and Its CompoundsGoodGoodGood
TerbutrynGood
TrichloromethaneGoodGoodGood
Other PollutantsDoes not require assessmentDoes not require assessmentGoodGoodGood
Carbon TetrachlorideGoodGoodGood
DDT TotalGoodGoodGood
para - para DDTGoodGoodGood

Investigations into classification status

No data to show

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

Reason TypeSWMIActivityCategoryClassification ElementMore information
RNAGDiffuse sourcePoor Livestock ManagementAgriculture and rural land managementFishDetails
RNAGPoint sourceMisconnectionsDomestic General PublicPhosphateDetails
RNAGPoint sourceSewage discharge (continuous)Water IndustryPhosphateDetails
RNAGDiffuse sourceRiparian/in-river activities (inc bankside erosion)Agriculture and rural land managementPhosphateDetails
RNAGDiffuse sourcePoor nutrient managementAgriculture and rural land managementPhosphateDetails
RNAGDiffuse sourcePoor soil managementAgriculture and rural land managementPhosphateDetails
RNAGDiffuse sourcePoor Livestock ManagementAgriculture and rural land managementPhosphateDetails
RNAGDiffuse sourcePoor Livestock ManagementAgriculture and rural land managementMacrophytes and Phytobenthos CombinedDetails
RNAGPoint sourceSewage discharge (continuous)Water IndustryMacrophytes 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
RNAGDiffuse sourcePoor Livestock ManagementAgriculture and rural land managementMacrophytes and Phytobenthos CombinedDetails
RFDMethod Change (RFD Only)Not applicableNo sector responsibleMacrophytes and Phytobenthos CombinedDetails
RNAGDiffuse sourceRiparian/in-river activities (inc bankside erosion)Agriculture and rural land managementMacrophytes and Phytobenthos CombinedDetails

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 management0000020
Industry0000000
Mining and quarrying0000000
Navigation0000000
Urban and transport0000000
Water Industry0200000
Local & central government0000000
Domestic general public0000000
Recreation0000000
Waste treatment and disposal0000000
Other0000000
No sector responsible0000000
Sector under investigation0000000
Total0200020

Objectives

Classification ItemStatusYearReasons
EcologicalModerate2027Disproportionately expensive: Disproportionate burdens;
Technically infeasible: No known technical solution is available
Biological quality elementsModerate2027Disproportionately expensive: Disproportionate burdens;
Technically infeasible: No known technical solution is available
FishGood2027Disproportionately expensive: Disproportionate burdens
InvertebratesGood2015
Macrophytes and Phytobenthos CombinedModerate2015Technically infeasible: No known technical solution is available
Physico-chemical quality elementsModerate2015Technically infeasible: No known technical solution is available
Ammonia (Phys-Chem)Good2015
Dissolved oxygenGood2015
PhosphateModerate2015Technically infeasible: No known technical solution is available
TemperatureGood2015
pHGood2015
Hydromorphological Supporting ElementsSupports good2015
Hydrological RegimeSupports good2015
Supporting elements (Surface Water)Not assessed2015
Specific pollutantsHigh2015
CopperHigh2015
ChemicalGood2015
Priority hazardous substancesGood2015
NonylphenolGood2015
Priority substancesGood2015
1,2-dichloroethaneGood2015
BenzeneGood2015
DichloromethaneGood2015
TrichloromethaneGood2015
Other PollutantsGood2015
Carbon TetrachlorideGood2015
DDT TotalGood2015
para - para DDTGood2015

Protected areas

No data to show

Upstream water bodies