Par River (Upper) Water Body

Moderate ecological status

Attributes

  • Water Body IDGB108048002310
  • Water Body TypeRiver
  • Hydromorphological designationnot designated artificial or heavily modified
  • NGRSX0434158192
  • Catchment area32.499 km2
  • Surveillance Water BodyNo
  • Length15.214 km
  • Catchment area3249.901 ha

Classifications

Classification Item20192022
EcologicalModerateModerate
Biological quality elementsModerateModerate
FishModerateModerate
InvertebratesGoodGood
Macrophytes and Phytobenthos CombinedHighHigh
Phytobenthos Sub ElementHighHigh
Physico-chemical quality elementsModerateGood
Acid Neutralising CapacityHighHigh
Ammonia (Phys-Chem)ModerateGood
Biochemical Oxygen Demand (BOD)HighHigh
Dissolved oxygenHighHigh
PhosphateGoodGood
TemperatureGoodHigh
pHHighHigh
Hydromorphological Supporting ElementsSupports goodSupports good
Hydrological RegimeDoes not support goodSupports good
MorphologySupports goodSupports good
Specific pollutantsHighHigh
ArsenicHighHigh
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)Good
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
RNAGFlowSurface water abstractionOtherHydrological RegimeDetails
RNAGPhysical modificationReservoir / Impoundment - non flow relatedOtherFishDetails
RNAGPoint sourceActive mineMining and quarryingFishDetails
RNAGNaturalNatural mineralisationNo sector responsibleFishDetails
RNAGDiffuse sourceAbandoned mineMining and quarryingFishDetails
RNAGDiffuse sourceAbandoned mineMining and quarryingFishDetails
RNAGmeasures delivered to address reason, awaiting recoveryNot applicableNo sector responsiblePolybrominated diphenyl ethers (PBDE)Details
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 management0000000
Industry0000000
Mining and quarrying0000003
Navigation0000000
Urban and transport0000000
Water Industry0000000
Local & central government0000000
Domestic general public0000000
Recreation0000000
Waste treatment and disposal0000000
Other1000000
No sector responsible0000000
Sector under investigation0000000
Total1000003

Objectives

Classification ItemStatusYearReasons
EcologicalGood2027 - Low confidenceDisproportionately expensive: Disproportionate burdens;
Technically infeasible: Cause of adverse impact unknown
Biological quality elementsGood2027 - Low confidenceDisproportionately expensive: Disproportionate burdens
FishGood2027 - Low confidenceDisproportionately expensive: Disproportionate burdens
InvertebratesGood2015
Macrophytes and Phytobenthos CombinedGood2015
Physico-chemical quality elementsGood2027 - Low confidenceTechnically infeasible: Cause of adverse impact unknown
Acid Neutralising CapacityGood2015
Ammonia (Phys-Chem)Good2027 - Low confidenceTechnically infeasible: Cause of adverse impact unknown
Dissolved oxygenGood2015
PhosphateGood2015
TemperatureGood2015
pHGood2015
Hydromorphological Supporting ElementsSupports good2015
Hydrological RegimeSupports good2027 - Low confidenceDisproportionately expensive: Disproportionate burdens
Supporting elements (Surface Water)Not assessed2015
Specific pollutantsHigh2015
ArsenicHigh2015
CopperHigh2015
IronHigh2015
ManganeseHigh2015
ZincHigh2015
ChemicalGood2063Natural conditions: Chemical status recovery time
Priority hazardous substancesGood2063Natural conditions: Chemical status recovery time
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)Good2015
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

No data to show

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
141862 1418622012
PAR RIVER AT LUXULYAN BRIDGE 816101942009, 2012, 2013, 2010, 2011, 20142022
PAR/MAIN PAR/D/S LUXULYAN STW/ 207802009, 2011, 2012, 2010
RESCORLA BROOK PRIOR TO PAR RIVER 816108082009
PAR/MAIN PAR/U/S ROSEVEAN STREAM/ 196742009, 2013, 2011, 2012, 2010
PAR/MAIN PAR/U/S CARBIS STREAM/ 196732009, 2011, 2012, 2010
87339 873392009
141859 141859201120192019
PAR/MAIN PAR/TREMODRETT MILL/ 392752013, 2014, 20122019, 2015, 2013, 2016, 20142019
PAR RIVER D/S ST.AUSTELL (NORTH) STW 816101862016, 2019, 20152019
8773 87732014, 20092014, 2015, 2016
141861 1418612013, 2014, 2012
PAR/ROSEVEAN STREAM/U/S ROCK DRYERS/ 196832009, 2013, 2011, 2012, 2010
ROSEVEAN STREAM APPROX 75M D/S ROCKS STM 816110752009, 2012, 2013, 2014, 2010, 201120192019
8782 87822014, 20092014, 2015, 2016
PAR/TREVERBYN STREAM/TRESKILLING/ 196852009, 2013, 2011, 2014, 2012, 20102019, 2015, 2013, 2016, 20142019
ROSEVEAN STREAM PRIOR TO PAR RIVER 8161103320092019, 2016, 20152019
PAR RIVER AT LAVREAN BRIDGE 816102102009, 2012, 2013, 2010, 20112016, 2015
TREVERBYN STREAM AT PENROSE 816105592009, 2012, 2013, 2010, 20112019, 2016, 20152019
PAR/CARBIS STREAM/HALLEW/ 390072013, 2014, 20122019, 2015, 2013, 2016, 20142019
PAR/MAIN PAR/BRIDGES MOOR/ 196762009, 2013, 2011, 2014, 2012, 20102019, 2015, 2013, 2016, 20142019
PAR/MAIN PAR/D/S ROSEVEAN STREAM/ 196752009, 2013, 2011, 2012, 2010
PAR RIVER AT HIGHER MENADEW 816102212009, 2013, 2014, 20122022
CARBIS STREAM PRIOR TO PAR RIVER 816111052009, 2012, 2013, 2010, 20112016, 2015, 20192019
CARBIS STREAM D/S WHEAL PROSPER MICA DAM 816111822009, 2012, 2013, 2010, 201120192019
PAR/MAIN PAR/BILBERRRY/ 159512009, 2011, 2010
PAR/CARBIS STREAM/U/S MOLINNIS STREAM/ 196812009, 2011, 2012, 2010
PAR/CARBIS STREAM/U/S PAR RIVER CONFLUENCE/ 196822009, 2011, 2012, 2010
8769 876920142014, 2015, 2016

Upstream water bodies

    Downstream water bodies