Deer Water Body

Poor ecological status

Attributes

  • Water Body IDGB108047013880
  • Water Body TypeRiver
  • Hydromorphological designationnot designated artificial or heavily modified
  • NGRSS3289500294
  • Catchment area4530.98 ha
  • Length23.841 km
  • Catchment area45.31 km2
  • Surveillance Water BodyNo

Classifications

Classification Item20192022
EcologicalModeratePoor
Biological quality elementsModeratePoor
FishModeratePoor
InvertebratesGoodGood
Macrophytes and Phytobenthos CombinedModerateModerate
Phytobenthos Sub ElementModerateModerate
Physico-chemical quality elementsModerateModerate
Ammonia (Phys-Chem)HighHigh
Dissolved oxygenHighHigh
PhosphatePoorPoor
TemperatureHighHigh
pHHighHigh
Hydromorphological Supporting ElementsSupports goodSupports good
Hydrological RegimeSupports goodSupports good
MorphologySupports goodSupports good
Specific pollutantsHighHigh
ZincHighHigh
ChemicalFailDoes not require assessment
Priority hazardous substancesFailDoes not require assessment
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 substancesGoodDoes not require assessment
Cypermethrin (Priority)Good
FluorantheneGood
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 IndustryPhosphateDetails
RNAGDiffuse sourcePoor soil managementAgriculture and rural land managementMacrophytes and Phytobenthos CombinedDetails
RNAGNaturalNatural conditions - otherNo sector responsibleFishDetails
RNAGDiffuse sourcePoor nutrient managementAgriculture and rural land managementMacrophytes and Phytobenthos CombinedDetails
RNAGDiffuse sourcePoor soil managementAgriculture and rural land managementFishDetails
RNAGDiffuse sourcePoor Livestock ManagementAgriculture and rural land managementMacrophytes and Phytobenthos CombinedDetails
RNAGPoint sourceSewage discharge (continuous)Water IndustryFishDetails
RNAGPoint sourceSewage discharge (continuous)Water IndustryMacrophytes and Phytobenthos CombinedDetails
RNAGDiffuse sourcePoor Livestock ManagementAgriculture and rural land managementFishDetails
RNAGPoint sourceSewage discharge (intermittent)Water IndustryMacrophytes and Phytobenthos CombinedDetails
RNAGNaturalDroughtNo sector responsibleFishDetails
RNAGDiffuse sourcePoor soil managementAgriculture and rural land managementPhosphateDetails
RNAGmeasures delivered to address reason, awaiting recoveryNot applicableNo sector responsiblePolybrominated diphenyl ethers (PBDE)Details
RNAGDiffuse sourcePoor nutrient managementAgriculture and rural land managementPhosphateDetails
RNAGmeasures delivered to address reason, awaiting recoveryNot applicableNo sector responsibleMercury and Its CompoundsDetails
RNAGDiffuse sourcePoor Livestock ManagementAgriculture and rural land managementPhosphateDetails
RNAGPoint sourceSewage discharge (continuous)Water IndustryPhosphateDetails

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 management0000080
Industry0000000
Mining and quarrying0000000
Navigation0000000
Urban and transport0000000
Water Industry0300000
Local & central government0000000
Domestic general public0000000
Recreation0000000
Waste treatment and disposal0000000
Other0000000
No sector responsible0000000
Sector under investigation0000000
Total0300080

Objectives

Classification ItemStatusYearReasons
EcologicalGood2027 - Low confidenceDisproportionately expensive: Disproportionate burdens
Biological quality elementsGood2027 - Low confidenceDisproportionately expensive: Disproportionate burdens
FishGood2027 - Low confidenceDisproportionately expensive: Disproportionate burdens
InvertebratesGood2015
Macrophytes and Phytobenthos CombinedGood2027 - Low confidenceDisproportionately expensive: Disproportionate burdens
Physico-chemical quality elementsGood2027 - Low confidenceDisproportionately expensive: Disproportionate burdens
Ammonia (Phys-Chem)Good2015
Dissolved oxygenGood2015
PhosphateGood2027 - Low confidenceDisproportionately expensive: Disproportionate burdens
TemperatureGood2015
pHGood2015
Hydromorphological Supporting ElementsSupports good2015
Hydrological RegimeSupports good2015
Supporting elements (Surface Water)Not assessed2015
Specific pollutantsHigh2015
ZincHigh2015
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
Lower River TamarSWSGZ5015Safeguard Zone

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
DEER AT DERRITON BR 812014602022
COLES MILL STREAM 100MD/S HOLSWORTHY STW 812016022014, 2009, 2012, 2013
TAMAR/DEER/MAIN DEER/DEER BRIDGE/ 132442012, 2009, 2010, 2013, 2011, 20142019, 2015, 2013, 2016, 20142022, 2019
RIVER DEER AT DEER BRIDGE 812014022012, 2010, 2014, 2009, 2013, 20112016, 2015, 2014, 20132022
TAMAR/DEER/MAIN DEER/FORDA MILL/ 132602012, 2009, 2010, 2013, 2011, 20142019, 2015, 20162022, 2019
TAMAR/DEER/CHILSWORTHY STREAM/CHILSWORTHY/ 132322012, 2009, 2010, 2013, 2011, 20142015, 20162022
HOLLACOMBE LANDFILL SITE DANGEROUS SUBS 812016322011, 2012, 2010, 2013, 20092016, 20192019
TAMAR/DEER/MAIN DEER/DERRITON BRIDGE/ 132542012, 2009, 2010, 2013, 2011, 20142019, 2015, 2013, 2016, 20142022, 2019
TAMAR/DEER/DUNSTABLE/DUNSTABLE/ 132382012, 2009, 2010, 2013, 2011, 20142015, 2016
8872 88722012, 2010, 2013, 2014, 2011, 20092015, 2016, 2014, 2013
COLESMILL STREAM U/S HOLSWORTHY STW 812016122022
8948 89482012, 2013, 20142015, 2014, 2016, 2013
8947 89472013, 2011, 20142015, 2014, 2016, 2013
RIVER DEER AT WINSCOTT BRIDGE 8120144420142015, 2016, 20142022
TAMAR/DEER/DUNSTABLE/DUNSTABLE U/S STW/ 524652022
TAMAR/DEER/MAIN DEER/HONEYCROFT BRIDGE/ 132482012, 2009, 2010, 2013, 2011, 20142015, 20162022
RIVER DEER AT RYDON BRIDGE 8120147020092015, 20162022
8946 89462009
ANVIL CORNER TIP DOWNSTREAM 812013702009

Upstream water bodies

    Downstream water bodies