Isle - Upper Water Body

Moderate ecological status

Attributes

  • Water Body IDGB108052015160
  • Water Body TypeRiver
  • Hydromorphological designationnot designated artificial or heavily modified
  • NGRST3425711951
  • Catchment area2150.08 ha
  • Length8.688 km
  • Catchment area21.501 km2
  • Surveillance Water BodyNo

Classifications

Classification Item2019
EcologicalModerate
Biological quality elementsModerate
InvertebratesHigh
Macrophytes and Phytobenthos CombinedModerate
Macrophytes Sub ElementModerate
Phytobenthos Sub ElementModerate
Physico-chemical quality elementsModerate
Acid Neutralising CapacityHigh
Ammonia (Phys-Chem)High
Dissolved oxygenHigh
PhosphateModerate
TemperatureHigh
pHHigh
Hydromorphological Supporting ElementsSupports good
Hydrological RegimeDoes not support good
MorphologySupports good
Specific pollutantsHigh
IronHigh
ChemicalFail
Priority hazardous substancesFail
Benzo(a)pyreneGood
Dioxins and dioxin-like compoundsGood
Heptachlor and cis-Heptachlor epoxideGood
Hexabromocyclododecane (HBCDD)Good
HexachlorobenzeneGood
HexachlorobutadieneGood
Mercury and Its CompoundsFail
Perfluorooctane sulphonate (PFOS)Good
Polybrominated diphenyl ethers (PBDE)Fail
Priority substancesGood
Cypermethrin (Priority)Good
FluorantheneGood
Other PollutantsDoes 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
RNAGDiffuse sourcePoor nutrient managementAgriculture and rural land managementMacrophytes and Phytobenthos CombinedDetails
RNAGmeasures delivered to address reason, awaiting recoveryNot applicableNo sector responsiblePolybrominated diphenyl ethers (PBDE)Details
RNAGPoint sourceSewage discharge (continuous)No sector responsibleMacrophytes and Phytobenthos CombinedDetails
RNAGNaturalDroughtNo sector responsibleHydrological RegimeDetails
RNAGPoint sourceSewage discharge (continuous)Waste treatment and disposalPhosphateDetails
RNAGNaturalNatural mineralisationNo sector responsiblePhosphateDetails
RNAGPoint sourceSewage discharge (continuous)Water IndustryPhosphateDetails
RNAGmeasures delivered to address reason, awaiting recoveryNot applicableNo sector responsibleMercury and Its CompoundsDetails
RNAGPoint sourceSewage discharge (continuous)Water IndustryMacrophytes and Phytobenthos CombinedDetails

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 management0000010
Industry0000000
Mining and quarrying0000000
Navigation0000000
Urban and transport0000000
Water Industry0200000
Local & central government0000000
Domestic general public0000000
Recreation0000000
Waste treatment and disposal0100000
Other0000000
No sector responsible0000000
Sector under investigation0000000
Total0300010

Objectives

Classification ItemStatusYearReasons
EcologicalModerate2015Disproportionately expensive: Unfavourable balance of costs and benefits
Biological quality elementsModerate2015Disproportionately expensive: Unfavourable balance of costs and benefits
InvertebratesGood2015
Macrophytes and Phytobenthos CombinedModerate2015Disproportionately expensive: Unfavourable balance of costs and benefits
Physico-chemical quality elementsModerate2015Disproportionately expensive: Unfavourable balance of costs and benefits
Acid Neutralising CapacityGood2015
Ammonia (Phys-Chem)Good2015
Dissolved oxygenGood2015
PhosphateModerate2015Disproportionately expensive: Unfavourable balance of costs and benefits
TemperatureGood2015
pHGood2015
Hydromorphological Supporting ElementsSupports good2015
Hydrological RegimeDoes not support good2015Disproportionately expensive: Unfavourable balance of costs and benefits
Supporting elements (Surface Water)Not assessed2015
Specific pollutantsHigh2015
IronHigh2015
ChemicalGood2063Natural conditions: Chemical status recovery time
Priority hazardous substancesGood2063Natural conditions: Chemical status recovery time
Benzo(a)pyreneGood2015
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)Good2015
Polybrominated diphenyl ethers (PBDE)Good2063Natural conditions: Chemical status recovery time
Priority substancesGood2015
Cypermethrin (Priority)Good2015
FluorantheneGood2015
Other PollutantsDoes not require assessment2015

Protected areas

PA NameIdDirectiveMore information
ChardG24Nitrates 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
SOMERSET AREA/RIVER PARRETT CATCHMENT/RIVER ISLE/MAIN RIVER ISLE/U/S CHARD STW/ 479452014
10284 1028420142015, 2016, 2014
R ISLE WATERY LANE 1 E20312002012, 2013, 2014
R ISLE BERE MILLS FM E20310002011, 2009, 2012, 2010, 20132015, 2016
10312 103122010, 2009
US COMBE ST. NICHOLAS STW E203350020092015, 2016
160738 16073820142015, 2016, 2014
R ISLE AT HORNSBURY MILL E21908002012, 2013, 2014
154858 1548582013, 2016, 2015
159872 1598722014, 20132016, 2013, 2015, 2014
R ISLE US CHARD STW E203080020092015, 2016
SOMERSET AREA/RIVER PARRETT CATCHMENT/RIVER ISLE/MAIN RIVER ISLE/MANOR FARM, KNOWLE ST. GILES (SE-06)/ 123682012, 2010, 2009, 2011

Upstream water bodies

    Downstream water bodies