Cranleigh Waters Water Body

Moderate ecological status

Attributes

  • Water Body IDGB106039017810
  • Water Body TypeRiver
  • Hydromorphological designationnot designated artificial or heavily modified
  • NGRTQ0391237513
  • Catchment area11098.89 ha
  • Length28.873 km
  • Catchment area110.989 km2
  • Surveillance Water BodyNo

Classifications

Classification Item2019
EcologicalModerate
Biological quality elementsModerate
FishGood
InvertebratesGood
Macrophytes and Phytobenthos CombinedModerate
Macrophytes Sub ElementModerate
Phytobenthos Sub ElementModerate
Physico-chemical quality elementsModerate
Acid Neutralising CapacityHigh
Ammonia (Phys-Chem)High
Dissolved oxygenModerate
PhosphateModerate
TemperatureHigh
pHHigh
Hydromorphological Supporting ElementsSupports good
Hydrological RegimeSupports good
MorphologySupports good
Specific pollutantsModerate
CopperHigh
IronHigh
ManganeseHigh
PermethrinHigh
ZincModerate
ChemicalFail
Priority hazardous substancesFail
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 CompoundsGood
Perfluorooctane sulphonate (PFOS)Fail
Polybrominated diphenyl ethers (PBDE)Fail
Priority substancesFail
Cypermethrin (Priority)Fail
FluorantheneGood
Lead and Its CompoundsGood
Nickel and Its CompoundsGood
Other PollutantsGood
Aldrin, Dieldrin, Endrin & IsodrinGood

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
RNAGPhysical modificationReservoir / Impoundment - non flow relatedAgriculture and rural land managementDissolved oxygenDetails
RNAGmeasures delivered to address reason, awaiting recoveryNot applicableNo sector responsiblePolybrominated diphenyl ethers (PBDE)Details
RNAGPoint sourceSewage discharge (intermittent)Urban and transportPhosphateDetails
RNAGPoint sourceSewage discharge (continuous)Water IndustryPhosphateDetails
RNAGDiffuse sourcePoor Livestock ManagementAgriculture and rural land managementPhosphateDetails
RNAGPoint sourceSewage discharge (continuous)Water IndustryDissolved oxygenDetails
RNAGPhysical modificationLand use - arableAgriculture and rural land managementMacrophytes and Phytobenthos CombinedDetails
RNAGDiffuse sourcePoor nutrient managementAgriculture and rural land managementDissolved oxygenDetails
RNAGPhysical modificationLand use - arableAgriculture and rural land managementDissolved oxygenDetails
RNAGPoint sourceSewage discharge (continuous)Water IndustryMacrophytes and Phytobenthos CombinedDetails
RNAGPoint sourceSewage discharge (intermittent)Urban and transportMacrophytes and Phytobenthos CombinedDetails
RNAGDiffuse sourcePoor Livestock ManagementAgriculture and rural land managementMacrophytes and Phytobenthos CombinedDetails
RNAGFlowLow Flow (not drought)No sector responsibleDissolved oxygenDetails
RNAGUnknown (pending investigation)Unknown (pending investigation)Sector under investigationPerfluorooctane sulphonate (PFOS)Details

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 management2000020
Industry0000000
Mining and quarrying0000000
Navigation0000000
Urban and transport0200000
Water Industry0200000
Local & central government0000000
Domestic general public0000000
Recreation0000000
Waste treatment and disposal0000000
Other0000000
No sector responsible0000000
Sector under investigation0000000
Total2400020

Objectives

Classification ItemStatusYearReasons
EcologicalGood2039Natural conditions: Ecological recovery time;
Technically infeasible: No known technical solution is available
Biological quality elementsGood2039Natural conditions: Ecological recovery time
FishGood2015
InvertebratesGood2015
Macrophytes and Phytobenthos CombinedGood2039Natural conditions: Ecological recovery time
Physico-chemical quality elementsGood2027Technically infeasible: No known technical solution is available
Acid Neutralising CapacityGood2015
Ammonia (Phys-Chem)Good2015
Dissolved oxygenGood2015
PhosphateGood2027Technically infeasible: No known technical solution is available
TemperatureGood2015
pHGood2015
Hydromorphological Supporting ElementsSupports good2015
Hydrological RegimeSupports good2015
Supporting elements (Surface Water)Not assessed2015
Specific pollutantsHigh2015
CopperHigh2015
IronHigh2015
ManganeseHigh2015
PermethrinHigh2015
ZincHigh2015
ChemicalGood2063Natural conditions: Chemical status recovery time;
Technically infeasible: Cause of adverse impact unknown;
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 CompoundsGood2015
Perfluorooctane sulphonate (PFOS)Good2039Technically infeasible: No known technical solution is available
Polybrominated diphenyl ethers (PBDE)Good2063Natural conditions: Chemical status recovery time
Priority substancesGood2039Technically infeasible: Cause of adverse impact unknown
Cypermethrin (Priority)Good2039Technically infeasible: Cause of adverse impact unknown
FluorantheneGood2015
Lead and Its CompoundsGood2015
Nickel and Its CompoundsGood2015
Other PollutantsGood2015
Aldrin, Dieldrin, Endrin & IsodrinGood2015

Protected areas

PA NameIdDirectiveMore information
WeySWSGZ4015Safeguard Zone
Cranleigh Waters NVZS453Nitrates 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
36182 361822010, 2011, 20142016, 2015, 2014
36178 361782009
COLLINS BROOK ABOVE COLLINS FARM, BAYNAR PWER00022009, 2010
CRANLEIGH WATERS AT ELMBRIDGE, CRANLEIGH PWER00042010, 20092015, 2016
RIVER WEY/CRANLEIGH WATER/RUN COMMON/ 103812013, 2011, 2014, 2012, 2010, 20092015, 2016, 2014, 20192019
CRANLEIGH WATERS AT RUN COMMON, WONERSH PWER00062011, 2014, 2012, 2013, 2010, 20092016, 2015, 2014, 2013
36181 3618120142016, 2015, 2014
RIVER WEY/CRANLEIGH WATER/U/S ELMBRIDGE ROAD/ 510432015, 2016, 20192019
CRANLEIGH WATERS AT WATER BRIDGE, CRANLE PWER00082013, 2009, 2011, 2014, 2012, 20102016, 2013, 2015, 2014
36183 3618320142015, 2013, 2016, 2019, 20142019

Upstream water bodies