Lower River Plym Water Body

Good ecological status

Viewing latest data (Updated on 20 May 2022). Switch to draft river basin management plan data

Attributes

  • Water Body IDGB108047004040
  • Water Body TypeRiver
  • Hydromorphological designationnot designated artificial or heavily modified
  • NGRSX5201160645
  • Surveillance Water BodyYes
  • Length9.008 km
  • Catchment area26.767 km2
  • Catchment area2676.71 ha

Classifications

Classification Item20132014201520162019
EcologicalGoodGoodGoodGoodGood
Biological quality elementsGoodGoodGoodGoodGood
FishGoodGoodGoodGoodGood
InvertebratesHighHighGoodGoodHigh
Macrophytes and Phytobenthos CombinedGoodGoodGoodGoodGood
Physico-chemical quality elementsHighHighHighHighHigh
Acid Neutralising CapacityHighHighHighHigh
Ammonia (Phys-Chem)HighHighHighHighHigh
Biochemical Oxygen Demand (BOD)HighHighHighHigh
Dissolved oxygenHighHighHighHighHigh
PhosphateHighHighHighHighHigh
TemperatureHighHighHighHighHigh
pHHighHighHighHighHigh
Hydromorphological Supporting ElementsSupports goodSupports goodSupports goodSupports goodSupports good
Hydrological RegimeDoes not support goodDoes not support goodDoes not support goodDoes not support goodDoes not support good
MorphologySupports goodSupports goodSupports goodSupports goodSupports good
Specific pollutantsHighHighHighHighHigh
ArsenicHighHighHighHighHigh
ChlorothalonilHigh
CopperHighHighHighHighHigh
IronHighHighHigh
ManganeseHighHighHighHighHigh
TriclosanHighHigh
ZincHighHighHighHighHigh
ChemicalGoodGoodGoodGoodFail
Priority hazardous substancesGoodGoodGoodGoodFail
Benzo (b) and (k) fluorantheneGoodGoodGoodGood
Benzo (ghi) perelyene and indeno (123-cd) pyreneGoodGoodGoodGood
Benzo(a)pyreneGoodGoodGood
Cadmium and Its CompoundsGoodGoodGoodGoodGood
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 CompoundsGoodGoodFail
NonylphenolGoodGood
Perfluorooctane sulphonate (PFOS)Good
Polybrominated diphenyl ethers (PBDE)Fail
QuinoxyfenGood
Tributyltin CompoundsGoodGood
Priority substancesGoodGoodGoodGoodGood
AclonifenGood
AlachlorGood
BifenoxGood
CybutryneGood
Cypermethrin (Priority hazardous)Good
Dichlorvos (Priority)Good
FluorantheneGoodGoodGoodGoodGood
Lead and Its CompoundsGoodGoodGoodGoodGood
Nickel and Its CompoundsGoodGoodGoodGoodGood
TerbutrynGood
Other PollutantsGoodGoodGoodGoodGood
Aldrin, Dieldrin, Endrin & IsodrinGoodGoodGoodGoodGood
para - para DDTGoodGoodGoodGoodGood

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
RNAGMeasures delivered to address Reason, awaiting classificationNot applicableNo sector responsiblePolybrominated diphenyl ethers (PBDE)Details
RNAGMeasures delivered to address Reason, awaiting classificationNot applicableNo sector responsibleMercury and Its CompoundsDetails
RNAGFlowRegulating Reservoir Flow RegimeWater IndustryHydrological RegimeDetails

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 quarrying0000000
Navigation0000000
Urban and transport0000000
Water Industry0001000
Local & central government0000000
Domestic general public0000000
Recreation0000000
Waste treatment and disposal0000000
Other0000000
No sector responsible0000000
Sector under investigation0000000
Total0001000

Objectives

Classification ItemStatusYearReasons
EcologicalGood2015
Biological quality elementsGood2015
FishGood2015
InvertebratesGood2015
Macrophytes and Phytobenthos CombinedGood2015
Physico-chemical quality elementsGood2015
Acid Neutralising CapacityGood2015
Ammonia (Phys-Chem)Good2015
Dissolved oxygenGood2015
PhosphateGood2015
TemperatureGood2015
pHGood2015
Hydromorphological Supporting ElementsSupports good2015
Hydrological RegimeSupports good2027Disproportionately expensive: Disproportionate burdens
Supporting elements (Surface Water)Not assessed2015
Specific pollutantsHigh2015
ArsenicHigh2015
CopperHigh2015
IronHigh2015
ManganeseHigh2015
ZincHigh2015
ChemicalGood2015
Priority hazardous substancesGood2015
Benzo (b) and (k) fluorantheneGood2015
Benzo (ghi) perelyene and indeno (123-cd) pyreneGood2015
Benzo(a)pyreneGood2015
Cadmium and Its CompoundsGood2015
Mercury and Its CompoundsGood2015
Priority substancesGood2015
FluorantheneGood2015
Lead and Its CompoundsGood2015
Nickel and Its CompoundsGood2015
Other PollutantsGood2015
Aldrin, Dieldrin, Endrin & IsodrinGood2015
para - para DDTGood2015

Protected areas

No data to show

Upstream water bodies

Downstream water bodies