Little Don from Source to River Don Water Body

Moderate ecological status

Attributes

  • Water Body IDGB104027057460
  • Water Body TypeRiver
  • Hydromorphological designationheavily modified
  • NGRSK2567799078
  • Catchment area45.874 km2
  • Surveillance Water BodyNo
  • Length16.47 km
  • Catchment area4587.408 ha

Classifications

Classification Item20192022
EcologicalModerateModerate
Biological quality elementsPoorPoor
FishPoorPoor
InvertebratesGoodHigh
Macrophytes and Phytobenthos CombinedModerateModerate
Phytobenthos Sub ElementModerateModerate
Physico-chemical quality elementsGoodGood
Acid Neutralising CapacityHighHigh
Ammonia (Phys-Chem)HighHigh
Dissolved oxygenHighHigh
PhosphateGoodGood
TemperatureHighHigh
pHHighHigh
Supporting elements (Surface Water)ModerateModerate
Mitigation Measures AssessmentModerate or lessModerate or less
Specific pollutantsHighHigh
Chromium (VI)HighHigh
CopperHighHigh
IronHighHigh
ManganeseHighHigh
ZincHighHigh
ChemicalFailDoes not require assessment
Priority hazardous substancesFailDoes not require assessment
Benzo(a)pyreneGood
Cadmium and Its CompoundsGood
Dioxins and dioxin-like compoundsGood
Heptachlor and cis-Heptachlor epoxideGood
Hexabromocyclododecane (HBCDD)Good
HexachlorobenzeneGood
HexachlorobutadieneGood
Mercury and Its CompoundsFail
Perfluorooctane sulphonate (PFOS)Fail
Polybrominated diphenyl ethers (PBDE)Fail
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
RNAGPoint sourceSewage discharge (intermittent)Water IndustryMacrophytes and Phytobenthos CombinedDetails
RNAGmeasures delivered to address reason, awaiting recoveryNot applicableNo sector responsibleMercury and Its CompoundsDetails
RNAGUnknown (pending investigation)Unknown (pending investigation)Sector under investigationPerfluorooctane sulphonate (PFOS)Details
RNAGmeasures delivered to address reason, awaiting recoveryNot applicableNo sector responsiblePolybrominated diphenyl ethers (PBDE)Details
RNAGFlowRegulating Reservoir Flow RegimeWater IndustryFishDetails
RFDMonitoring Site Changed (RFD only)Not applicableNo sector responsibleFishDetails
RNAGPhysical modificationBarriers - ecological discontinuityIndustryFishDetails
RNAGPhysical modificationOther (not in list, must add details in comments)Urban and transportMitigation Measures AssessmentDetails
RNAGPhysical modificationOther (not in list, must add details in comments)Local and Central GovernmentMitigation Measures AssessmentDetails
RNAGPhysical modificationOther (not in list, must add details in comments)Water IndustryMitigation Measures AssessmentDetails
RNAGPhysical modificationOther (not in list, must add details in comments)Water IndustryMitigation 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 management0000000
Industry1000000
Mining and quarrying0000000
Navigation0000000
Urban and transport1000000
Water Industry2100000
Local & central government1000000
Domestic general public0000000
Recreation0000000
Waste treatment and disposal0000000
Other0000000
No sector responsible0000000
Sector under investigation0000000
Total5100000

Objectives

Classification ItemStatusYearReasons
EcologicalModerate2015Disproportionately expensive: Disproportionate burdens;
Disproportionately expensive: Unfavourable balance of costs and benefits
Biological quality elementsGood2027 - Low confidenceDisproportionately expensive: Disproportionate burdens
FishGood2015
InvertebratesGood2021Disproportionately expensive: Disproportionate burdens
Macrophytes and Phytobenthos CombinedGood2027 - Low confidenceDisproportionately expensive: Disproportionate burdens
Physico-chemical quality elementsGood2015
Acid Neutralising CapacityGood2015
Ammonia (Phys-Chem)Good2015
Dissolved oxygenGood2015
PhosphateGood2015
TemperatureGood2015
pHGood2015
Hydromorphological Supporting ElementsNot assessed2015
Supporting elements (Surface Water)Moderate2015Disproportionately expensive: Unfavourable balance of costs and benefits
Mitigation Measures AssessmentModerate or less2021Disproportionately expensive: Unfavourable balance of costs and benefits
Specific pollutantsHigh2015
Chromium (VI)High2015
CopperHigh2015
IronHigh2015
ManganeseHigh2015
ZincHigh2015
ChemicalGood2063Natural conditions: Chemical status recovery time;
Technically infeasible: No known technical solution is available
Priority hazardous substancesGood2063Natural conditions: Chemical status recovery time;
Technically infeasible: No known technical solution is available
Benzo(a)pyreneGood2015
Cadmium and Its CompoundsGood2015
Dioxins and dioxin-like compoundsGood2015
Heptachlor and cis-Heptachlor epoxideGood2015
Hexabromocyclododecane (HBCDD)Good2015
HexachlorobenzeneGood2015
HexachlorobutadieneGood2015
Mercury and Its CompoundsGood2040Natural conditions: Chemical status recovery time
Perfluorooctane sulphonate (PFOS)Good2039Technically infeasible: No known technical solution is available
Polybrominated diphenyl ethers (PBDE)Good2063Natural conditions: Chemical status recovery time
Priority substancesGood2015
Cypermethrin (Priority)Good2015
FluorantheneGood2015
Lead and Its CompoundsGood2015
Nickel and Its CompoundsGood2015
Other PollutantsDoes not require assessment2015

Protected areas

PA NameIdDirectiveMore information
South Pennine MoorsUK0030280Special Area of ConservationNatural England
Peak District Moors (South Pennine Moors Phase 1)UK9007021Special Protection AreaNatural 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
LITTLE DON D/S UNDERBANK RESERVOIR 493018042014, 2010, 2012, 2011, 2009, 20132014, 2015, 2013, 2016, 20192022, 2019
LITTLE DON AT MIDHOPESTONES BRIDGE 4930179920142014, 2015, 2016, 20192019
RIVER DON CATCHMENT/LITTLE DON/DOWNSTREAM UNDERBANK RESERVOIR/ 316242014, 2012, 2010, 2013, 2011, 20092014, 2015, 2013, 2016, 20192022, 2019
LITTLE DON AT DEEPCAR. 493011532014, 2013, 20092014, 2016, 2015, 2013, 20192022, 2019
RIVER DON CATCHMENT/LITTLE DON/DOWNSTREAM LANGSETT RESERVOIR/ 119572014, 2012, 2010, 2013, 2011, 20092014, 2015, 2013, 2016, 20192022, 2019
LITTLE DON BELOW LANGSETT FILTERS 493017882014, 2012, 2011, 2010, 2013, 20092014, 2015, 2013, 2016, 20192019
RIVER DON CATCHMENT/LITTLE DON/DEEPCAR (FORMERLY STOCKSBRIDGE STW US)/ 43422014, 20132014, 2015, 2013, 2016
199 19920142015, 2016, 2019, 20142019
LITTLE DON AT CROOKLAND WOOD 493017892014, 20092014, 2015, 2016, 20192019
LITTLE DON D/S STOCKSBRIDGE CULVERT 493018032010, 2011, 2009
198 19820142015, 2014, 2013, 2016
LITTLE DON AT MANCHESTER ROAD -ABOVE BSC 493011572016, 2015, 20192019
1240 12402009, 2011, 20142015, 2013, 2016, 2019, 20142022, 2019

Upstream water bodies