Windermere (S Basin) Water Body

Moderate ecological status

Attributes

  • Water Body IDGB31247008
  • Water Body TypeLake
  • Hydromorphological designationheavily modified
  • NGRSD3845792173
  • Mean depth16.7 m
  • Altitude40 m
  • Surveillance Water BodyYes
  • Surface area5.896 km2
  • Surface area589.636 ha
  • Catchment area24877.25 ha

Classifications

Classification Item2019
EcologicalModerate
Biological quality elementsModerate
Chironomids (CPET)Good
Macrophytes and Phytobenthos CombinedModerate
Macrophytes Sub ElementModerate
Phytobenthos Sub ElementModerate
PhytoplanktonGood
Physico-chemical quality elementsModerate
Acid Neutralising CapacityHigh
Ammonia (Phys-Chem)High
Dissolved oxygenModerate
SalinityHigh
Total NitrogenGood
Total PhosphorusModerate
Supporting elements (Surface Water)Moderate
Expert JudgementModerate
Mitigation Measures AssessmentGood
Specific pollutantsHigh
ChlorothalonilHigh
Chromium (VI)High
CopperHigh
DiazinonHigh
DimethoateHigh
IronHigh
ManganeseHigh
PendimethalinHigh
PermethrinHigh
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
HexachlorocyclohexaneGood
Mercury and Its CompoundsFail
NonylphenolGood
PentachlorobenzeneGood
Perfluorooctane sulphonate (PFOS)Good
Polybrominated diphenyl ethers (PBDE)Fail
QuinoxyfenGood
Tributyltin CompoundsGood
Priority substancesGood
1,2-dichloroethaneGood
AclonifenGood
AlachlorGood
BenzeneGood
BifenoxGood
CybutryneGood
DichloromethaneGood
Dichlorvos (Priority)Good
FluorantheneGood
Lead and Its CompoundsGood
Nickel and Its CompoundsGood
TerbutrynGood
TrichloromethaneGood
Other PollutantsGood
Carbon TetrachlorideGood
DDT TotalGood
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
RNAGPoint sourceSewage discharge (intermittent)Water IndustryMacrophytes and Phytobenthos CombinedDetails
RNAGDiffuse sourcePoor nutrient managementAgriculture and rural land managementMacrophytes and Phytobenthos CombinedDetails
RNAGPoint sourceSewage discharge (continuous)Water IndustryMacrophytes and Phytobenthos CombinedDetails
RNAGmeasures delivered to address reason, awaiting recoveryNot applicableNo sector responsiblePolybrominated diphenyl ethers (PBDE)Details
RNAGPoint sourceSewage discharge (continuous)Urban and transportTotal PhosphorusDetails
RNAGPhysical modificationOther (not in list, must add details in comments)Water IndustryMitigation Measures AssessmentDetails
RNAGPoint sourceSewage discharge (continuous)Water IndustryTotal PhosphorusDetails
RNAGDiffuse sourcePoor nutrient managementAgriculture and rural land managementTotal PhosphorusDetails
RFDMethod Change (RFD Only)Not applicableNo sector responsibleDissolved oxygenDetails
RNAGmeasures delivered to address reason, awaiting recoveryNot applicableNo sector responsibleMercury and Its CompoundsDetails

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 management0000020
Industry0000000
Mining and quarrying0000000
Navigation0000000
Urban and transport0100000
Water Industry0300000
Local & central government0000000
Domestic general public0000000
Recreation0000000
Waste treatment and disposal0000000
Other0000000
No sector responsible0000000
Sector under investigation0000000
Total0400020

Objectives

Classification ItemStatusYearReasons
EcologicalGood2027 - Low confidenceDisproportionately expensive: Disproportionate burdens;
Natural conditions: Ecological recovery time
Biological quality elementsGood2027 - Low confidenceDisproportionately expensive: Disproportionate burdens;
Natural conditions: Ecological recovery time
Chironomids (CPET)Good2015
Macrophytes and Phytobenthos CombinedGood2027 - Low confidenceDisproportionately expensive: Disproportionate burdens;
Natural conditions: Ecological recovery time
PhytoplanktonGood2015
Physico-chemical quality elementsGood2027 - Low confidenceDisproportionately expensive: Disproportionate burdens;
Natural conditions: Ecological recovery time
Acid Neutralising CapacityGood2015
Ammonia (Phys-Chem)Good2015
Dissolved oxygenGood2015
SalinityGood2015
Total NitrogenGood2015
Total PhosphorusGood2027 - Low confidenceDisproportionately expensive: Disproportionate burdens;
Natural conditions: Ecological recovery time
Hydromorphological Supporting ElementsNot assessed2015
Supporting elements (Surface Water)Good2027 - Low confidenceDisproportionately expensive: Disproportionate burdens
Expert JudgementGood2027 - Low confidenceDisproportionately expensive: Disproportionate burdens
Mitigation Measures AssessmentGood2021Disproportionately expensive: Disproportionate burdens
Specific pollutantsHigh2015
ChlorothalonilHigh2015
Chromium (VI)High2015
CopperHigh2015
DiazinonHigh2015
DimethoateHigh2015
IronHigh2015
ManganeseHigh2015
PendimethalinHigh2015
PermethrinHigh2015
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
HexachlorocyclohexaneGood2015
Mercury and Its CompoundsGood2040Natural conditions: Chemical status recovery time
NonylphenolGood2015
PentachlorobenzeneGood2015
Perfluorooctane sulphonate (PFOS)Good2015
Polybrominated diphenyl ethers (PBDE)Good2063Natural conditions: Chemical status recovery time
QuinoxyfenGood2015
Tributyltin CompoundsGood2015
Priority substancesGood2015
1,2-dichloroethaneGood2015
AclonifenGood2015
AlachlorGood2015
BenzeneGood2015
BifenoxGood2015
CybutryneGood2015
DichloromethaneGood2015
Dichlorvos (Priority)Good2015
FluorantheneGood2015
Lead and Its CompoundsGood2015
Nickel and Its CompoundsGood2015
TerbutrynGood2015
TrichloromethaneGood2015
Other PollutantsGood2015
Carbon TetrachlorideGood2015
DDT TotalGood2015
para - para DDTGood2015

Protected areas

PA NameIdDirectiveMore information
Windermere, Millerground LandingUK45650Bathing Water Directive
Windermere, Rayrigg MeadowUK45675Bathing Water Directive
Windermere, Lakeside YMCAUK45625Bathing Water Directive
Windermere, FellfootUK45700Bathing Water Directive
Windermere (S Basin)UKGB31247008Drinking Water Protected Area
Lake WindermereUKENLK3Urban Waste Water Treatment Directive

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
WINDERMERE SOUTH BASIN 880160962016, 2014, 2015, 2019, 20132019
89140 891402014, 2013, 2016, 2015, 20192019
102078 1020782016, 2015, 2014, 2013
151067 1510672019, 20162019

Upstream water bodies

    Downstream water bodies