Rythe Water Body

Poor ecological status

Attributes

  • Water Body IDGB106039017650
  • Water Body TypeRiver
  • Hydromorphological designationheavily modified
  • NGRTQ1522365640
  • Catchment area20.04 km2
  • Surveillance Water BodyNo
  • Length5.099 km
  • Catchment area2003.99 ha

Classifications

Classification Item2019
EcologicalPoor
Biological quality elementsBad
FishBad
InvertebratesModerate
Macrophytes and Phytobenthos CombinedPoor
Phytobenthos Sub ElementPoor
Physico-chemical quality elementsModerate
Ammonia (Phys-Chem)High
Dissolved oxygenGood
PhosphatePoor
TemperatureHigh
pHHigh
Hydromorphological Supporting ElementsSupports good
Hydrological RegimeSupports good
Supporting elements (Surface Water)Moderate
Mitigation Measures AssessmentModerate or less
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
RNAGPhysical modificationFlood protection - structuresLocal and Central GovernmentFishDetails
RNAGPoint sourceLeaking utility sewersWater IndustryMacrophytes and Phytobenthos CombinedDetails
RNAGPoint sourceIncidentsWater IndustryMacrophytes and Phytobenthos CombinedDetails
RNAGPoint sourceMisconnectionsDomestic General PublicMacrophytes and Phytobenthos CombinedDetails
RNAGmeasures delivered to address reason, awaiting recoveryNot applicableNo sector responsiblePolybrominated diphenyl ethers (PBDE)Details
RNAGPoint sourceLeaking utility sewersWater IndustryPhosphateDetails
RNAGPoint sourceIncidentsWater IndustryPhosphateDetails
RNAGPoint sourceIncidentsWater IndustryInvertebratesDetails
RNAGPoint sourceMisconnectionsDomestic General PublicPhosphateDetails
RNAGPoint sourceMisconnectionsDomestic General PublicInvertebratesDetails
RNAGPoint sourceLeaking utility sewersWater IndustryInvertebratesDetails
RNAGPhysical modificationUrbanisation - urban developmentUrban and transportInvertebratesDetails
RNAGmeasures delivered to address reason, awaiting recoveryNot applicableNo sector responsibleMercury and Its CompoundsDetails
RNAGDiffuse sourceUrbanisation - urban developmentUrban and transportFishDetails
RNAGPhysical modificationBarriers - ecological discontinuityLocal and Central GovernmentFishDetails
RNAGPhysical modificationOther (not in list, must add details in comments)Urban and transportMitigation Measures AssessmentDetails
RNAGPhysical modificationOther (not in list, must add details in comments)Local and Central GovernmentMitigation Measures AssessmentDetails

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 transport2010000
Water Industry0330000
Local & central government3000000
Domestic general public0030000
Recreation0000000
Waste treatment and disposal0000000
Other0000000
No sector responsible0000000
Sector under investigation0000000
Total5370000

Objectives

Classification ItemStatusYearReasons
EcologicalGood2027 - Low confidenceDisproportionately expensive: Disproportionate burdens;
Good status prevented by A/HMWB designated use: Action to get biological element to good would have significant adverse impact on use
Biological quality elementsBad2015Disproportionately expensive: Disproportionate burdens;
Good status prevented by A/HMWB designated use: Action to get biological element to good would have significant adverse impact on use
FishBad2015Good status prevented by A/HMWB designated use: Action to get biological element to good would have significant adverse impact on use
InvertebratesGood2027 - Low confidenceDisproportionately expensive: Disproportionate burdens
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)Good2027 - Low confidenceDisproportionately expensive: Disproportionate burdens
Mitigation Measures AssessmentGood2027 - Low confidenceDisproportionately expensive: Disproportionate burdens
Specific pollutantsNot assessed2015
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

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
RYTHE STREAM BELOW WAFFRON BROOK PTHR031820142015, 2019, 2016, 20142019
34747 3474720142016, 2019, 2014, 20152019
34741 3474120142016, 2019, 2014, 20152019
RIVER MOLE/MOLE - MAIN RIVER/EMBER FAS/OLD EMBER CHANNEL OPPOSITE ORCHARD LANE/ 232902009
RIVER MOLE/MOLE TRIBUTARIES/RYTHE/ARBROOK COMMON/ 422852013, 20142015, 2013, 2016, 2014
RIVER MOLE/MOLE TRIBUTARIES/RYTHE/COUCHMORE AVENUE/ 422842013, 20142015, 2013, 2016, 2014

Upstream water bodies

    Downstream water bodies