Derwent US Bassenthwaite Lake Water Body

Moderate ecological status

Attributes

  • Water Body IDGB112075073561
  • Water Body TypeRiver
  • Hydromorphological designationheavily modified
  • NGRNY2727823709
  • Catchment area20.883 km2
  • Natural England Revised WB Protected Area targetshttp://publications.naturalengland.org.uk/publication/4808084962672640
  • Surveillance Water BodyNo
  • Length13.744 km
  • Catchment area2088.309 ha

Classifications

Classification Item20192022
EcologicalModerate
Biological quality elementsGood
FishGood
InvertebratesHigh
Physico-chemical quality elementsHigh
Ammonia (Phys-Chem)High
Dissolved oxygenHigh
PhosphateHigh
TemperatureHigh
pHHigh
Hydromorphological Supporting ElementsSupports good
Hydrological RegimeSupports good
Supporting elements (Surface Water)Good
Mitigation Measures AssessmentGood
Specific pollutantsModerate
CopperHigh
IronHigh
ManganeseHigh
TriclosanHigh
ZincModerate
ChemicalFailDoes not require assessment
Priority hazardous substancesFailDoes not require assessment
Benzo(a)pyreneGood
Cadmium and Its CompoundsGood
Di(2-ethylhexyl)phthalate (Priority hazardous)Good
Dioxins and dioxin-like compoundsGood
Heptachlor and cis-Heptachlor epoxideGood
Hexabromocyclododecane (HBCDD)Good
HexachlorobenzeneGood
HexachlorobutadieneGood
Mercury and Its CompoundsFail
NonylphenolGood
Perfluorooctane sulphonate (PFOS)Good
Polybrominated diphenyl ethers (PBDE)Fail
Tributyltin CompoundsGood
Priority substancesGoodDoes not require assessment
Cypermethrin (Priority)Good
FluorantheneGood
Lead and Its CompoundsGood
Nickel and Its CompoundsGood
Other PollutantsDoes not require assessmentDoes 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
RNAGPhysical modificationLand use - improved grasslandAgriculture and rural land managementFishDetails
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 sourceAbandoned mineMining and quarryingZincDetails
RNAGPoint sourcePrivate Sewage TreatmentRecreationFishDetails

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 quarrying0000001
Navigation0000000
Urban and transport0000000
Water Industry0000000
Local & central government0000000
Domestic general public0000000
Recreation0000000
Waste treatment and disposal0000000
Other0000000
No sector responsible0000000
Sector under investigation0000000
Total0000001

Objectives

Classification ItemStatusYearReasons
EcologicalGood2027 - Low confidenceDisproportionately expensive: Disproportionate burdens
Biological quality elementsGood2021Disproportionately expensive: Disproportionate burdens
FishGood2021Disproportionately expensive: Disproportionate burdens
InvertebratesGood2015
Physico-chemical quality elementsGood2015
Ammonia (Phys-Chem)Good2015
Dissolved oxygenGood2015
PhosphateGood2015
TemperatureGood2015
pHGood2015
Hydromorphological Supporting ElementsSupports good2015
Hydrological RegimeSupports good2015
Supporting elements (Surface Water)Good2015
Mitigation Measures AssessmentGood2015
Specific pollutantsHigh2027 - Low confidenceDisproportionately expensive: Disproportionate burdens
CopperHigh2015
IronHigh2015
ManganeseHigh2015
TriclosanHigh2015
ZincHigh2027 - Low confidenceDisproportionately expensive: Disproportionate burdens
ChemicalGood2063Natural conditions: Chemical status recovery time
Priority hazardous substancesGood2063Natural conditions: Chemical status recovery time
Benzo(a)pyreneGood2015
Cadmium and Its CompoundsGood2015
Di(2-ethylhexyl)phthalate (Priority hazardous)Good2015
Dioxins and dioxin-like compoundsGood2015
Heptachlor and cis-Heptachlor epoxideGood2015
Hexabromocyclododecane (HBCDD)Good2015
HexachlorobenzeneGood2015
HexachlorobutadieneGood2015
Mercury and Its CompoundsGood2040Natural conditions: Chemical status recovery time
NonylphenolGood2015
Perfluorooctane sulphonate (PFOS)Good2015
Polybrominated diphenyl ethers (PBDE)Good2063Natural conditions: Chemical status recovery time
Tributyltin CompoundsGood2015
Priority substancesGood2015
Cypermethrin (Priority)Good2015
FluorantheneGood2015
Lead and Its CompoundsGood2015
Nickel and Its CompoundsGood2015
Other PollutantsDoes not require assessment2015

Protected areas

PA NameIdDirectiveMore information
Lake District High FellsUK0012960Special Area of ConservationNatural England
River Derwent & Bassenthwaite LakeUK0030032Special 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
RIVER DERWENT AT HIGH STOCK BRIDGE 880055732012, 2010, 2013, 2011, 2014, 20092019, 20162019
DERWENT AT LOW STOCK BRIDGE 880055752009, 20102015, 2019, 20162019
RIVER GRETA AT A59 ROAD BRIDGE KESWICK 880055702012, 2010, 2011, 20092016, 2015
ST JOHN'S BECK AT THRELKELD BRIDGE 880055662012, 20112015
DERWENT AT A66 ROAD BRIDGE 880055712009, 20102016, 2015
65072 650722011, 2009, 2014, 20102016, 2019, 2014, 20152019
RIVER DERWENT/1565.00 APPLETHWAITE GILL, RIVER DERWENT/ 55232013, 2011, 2014, 20122013, 2016, 2014, 2019, 20152019
64621 646212010, 20142016, 2019, 2014, 20152019

Downstream water bodies