Hollowell Arm of Spratton Brook Water Body

Good ecological status

Attributes

  • Water Body IDGB105032045510
  • Water Body TypeRiver
  • Hydromorphological designationheavily modified
  • NGRSP6903272602
  • Surveillance Water BodyNo
  • Length8.505 km
  • Catchment area15.892 km2
  • Catchment area1589.18 ha

Classifications

Classification Item2019
EcologicalGood
Biological quality elementsModerate
FishGood
InvertebratesModerate
Macrophytes and Phytobenthos Combined
Macrophytes Sub ElementPoor
Physico-chemical quality elementsGood
Acid Neutralising CapacityHigh
Ammonia (Phys-Chem)High
Dissolved oxygenHigh
PhosphateGood
TemperatureHigh
pHHigh
Supporting elements (Surface Water)Good
Mitigation Measures AssessmentGood
Specific pollutantsHigh
CopperHigh
IronHigh
ManganeseHigh
ZincHigh
ChemicalFail
Priority hazardous substancesFail
Benzo(a)pyreneGood
Benzo(b)fluorantheneGood
Benzo(g-h-i)peryleneFail
Benzo(k)fluorantheneGood
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 substancesFail
Cypermethrin (Priority)Fail
FluorantheneGood
Lead and Its CompoundsGood
Nickel and Its CompoundsGood
Other PollutantsDoes not require assessment

Why do all water bodies have a chemical status of fail?

Investigations into classification status

Classification ElementCycleYearStatusOutcome
Phosphate22014HighVery certain there is a problem

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
RNAGDiffuse sourcePoor Livestock ManagementAgriculture and rural land managementPhosphateDetails
RNAGDiffuse sourcePoor nutrient managementAgriculture and rural land managementPhosphateDetails
RNAGPoint sourceSewage discharge (continuous)Water IndustryPhosphateDetails
RNAGPoint sourceSewage discharge (continuous)Water IndustryInvertebratesDetails
RNAGUnknown (pending investigation)Unknown (pending investigation)Sector under investigationBenzo(g-h-i)peryleneDetails
RNAGmeasures delivered to address reason, awaiting recoveryNot applicableNo sector responsibleMercury and Its CompoundsDetails
RNAGmeasures delivered to address reason, awaiting recoveryNot applicableNo sector responsiblePolybrominated diphenyl ethers (PBDE)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 management0000000
Industry0000000
Mining and quarrying0000000
Navigation0000000
Urban and transport0000000
Water Industry0000000
Local & central government0000000
Domestic general public0000000
Recreation0000000
Waste treatment and disposal0000000
Other0000000
No sector responsible0000000
Sector under investigation0000000
Total0000000

Objectives

Classification ItemStatusYearReasons
EcologicalGood2015
Biological quality elementsGood2027 - Low confidenceDisproportionately expensive: Disproportionate burdens
FishGood2015
InvertebratesGood2027 - Low confidenceDisproportionately expensive: Disproportionate burdens
Macrophytes and Phytobenthos CombinedNot assessed2015Disproportionately expensive: Disproportionate burdens
Physico-chemical quality elementsGood2015
Acid Neutralising CapacityGood2015
Ammonia (Phys-Chem)Good2015
Dissolved oxygenGood2015
PhosphateGood2015
TemperatureGood2015
pHGood2015
Hydromorphological Supporting ElementsNot assessed2015
Supporting elements (Surface Water)Good2015
Mitigation Measures AssessmentGood2015
Specific pollutantsHigh2015
CopperHigh2015
IronHigh2015
ManganeseHigh2015
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
Benzo(b)fluorantheneGood2015
Benzo(g-h-i)peryleneGood2033Technically infeasible: No known technical solution is available
Benzo(k)fluorantheneGood2015
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 substancesGood2027 - Low confidenceTechnically infeasible: Cause of adverse impact unknown
Cypermethrin (Priority)Good2027 - Low confidenceTechnically infeasible: Cause of adverse impact unknown
FluorantheneGood2015
Lead and Its CompoundsGood2015
Nickel and Its CompoundsGood2015
Other PollutantsDoes not require assessment2015

Protected areas

PA NameIdDirectiveMore information
Thrapstone lake Eutrophic lake NVZEL148Nitrates Directive
River Nene NVZS382Nitrates Directive
River Nene (SWSGZ1009)SWSGZ1009Safeguard Zone
River Nene (SWSGZ1006)SWSGZ1006Safeguard Zone

Upstream water bodies

    Downstream water bodies