Frome Dorset (Lower) d/s Louds Mill Dorchester Water Body

Moderate ecological status

Attributes

  • Water Body IDGB108044009692
  • Water Body TypeRiver
  • Hydromorphological designationnot designated artificial or heavily modified
  • NGRSY7252190205
  • Surveillance Water BodyYes
  • Catchment area109.028 km2
  • Catchment area10902.837 ha
  • Length63.835 km

Classifications

Classification Item20192022
EcologicalModerateModerate
Biological quality elementsModerateModerate
FishGoodHigh
InvertebratesHighHigh
Macrophytes and Phytobenthos CombinedModerateModerate
Macrophytes Sub ElementModerateModerate
Phytobenthos Sub ElementModerateModerate
Physico-chemical quality elementsGoodGood
Acid Neutralising CapacityHighHigh
Ammonia (Phys-Chem)HighHigh
Biochemical Oxygen Demand (BOD)HighHigh
Dissolved oxygenHighHigh
PhosphateGoodGood
TemperatureGoodHigh
pHHighHigh
Hydromorphological Supporting ElementsSupports goodSupports good
Hydrological RegimeSupports goodSupports good
Specific pollutantsHighHigh
ArsenicHighHigh
ChlorothalonilHighHigh
CopperHighHigh
IronHighHigh
ManganeseHighHigh
PendimethalinHighHigh
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
HexachlorocyclohexaneGood
Mercury and Its CompoundsFail
Perfluorooctane sulphonate (PFOS)Good
Polybrominated diphenyl ethers (PBDE)Fail
QuinoxyfenGood
Priority substancesGoodDoes not require assessment
AclonifenGood
AlachlorGood
BifenoxGood
CybutryneGood
Cypermethrin (Priority)Good
Dichlorvos (Priority)Good
FluorantheneGood
Lead and Its CompoundsGood
Nickel and Its CompoundsGood
TerbutrynGood
Other PollutantsGoodDoes not require assessment
Aldrin, Dieldrin, Endrin & IsodrinGood
para - para DDTGood

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
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
RNAGDiffuse sourcePoor nutrient managementAgriculture and rural land managementMacrophytes and Phytobenthos CombinedDetails
RNAGDiffuse sourceUrbanisation - urban developmentUrban and transportMacrophytes and Phytobenthos CombinedDetails
RNAGDiffuse sourcePoor Livestock ManagementAgriculture and rural land managementMacrophytes and Phytobenthos CombinedDetails
RNAGPoint sourceTrade/Industry dischargeIndustryMacrophytes and Phytobenthos CombinedDetails
RNAGPoint sourceTrade/Industry dischargeIndustryMacrophytes and Phytobenthos CombinedDetails

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 management0000020
Industry0020000
Mining and quarrying0000000
Navigation0000000
Urban and transport0010000
Water Industry0000000
Local & central government0000000
Domestic general public0000000
Recreation0000000
Waste treatment and disposal0000000
Other0000000
No sector responsible0000000
Sector under investigation0000000
Total0030020

Objectives

Classification ItemStatusYearReasons
EcologicalGood2027 - Low confidenceDisproportionately expensive: Disproportionate burdens
Biological quality elementsGood2027 - Low confidenceDisproportionately expensive: Disproportionate burdens
FishGood2015
InvertebratesGood2015
Macrophytes and Phytobenthos CombinedGood2027 - Low confidenceDisproportionately expensive: Disproportionate burdens
Physico-chemical quality elementsGood2015
Acid Neutralising CapacityGood2015
Ammonia (Phys-Chem)Good2015
Dissolved oxygenGood2015
PhosphateGood2015
TemperatureGood2015
pHGood2015
Hydromorphological Supporting ElementsSupports good2015
Hydrological RegimeSupports good2015
Supporting elements (Surface Water)Not assessed2015
Specific pollutantsHigh2015
ArsenicHigh2015
ChlorothalonilHigh2015
CopperHigh2015
IronHigh2015
ManganeseHigh2015
PendimethalinHigh2015
ZincHigh2015
ChemicalGood2063Natural conditions: Chemical status recovery time
Priority hazardous substancesGood2063Natural conditions: Chemical status recovery time
Benzo (b) and (k) fluorantheneGood2015
Benzo (ghi) perelyene and indeno (123-cd) pyreneGood2015
Benzo(a)pyreneGood2015
Cadmium and Its CompoundsGood2015
Dioxins and dioxin-like compoundsGood2015
Heptachlor and cis-Heptachlor epoxideGood2015
Hexabromocyclododecane (HBCDD)Good2015
HexachlorobenzeneGood2015
HexachlorobutadieneGood2015
HexachlorocyclohexaneGood2015
Mercury and Its CompoundsGood2040Natural conditions: Chemical status recovery time
Perfluorooctane sulphonate (PFOS)Good2015
Polybrominated diphenyl ethers (PBDE)Good2063Natural conditions: Chemical status recovery time
QuinoxyfenGood2015
Priority substancesGood2015
AclonifenGood2015
AlachlorGood2015
BifenoxGood2015
CybutryneGood2015
Cypermethrin (Priority)Good2015
Dichlorvos (Priority)Good2015
FluorantheneGood2015
Lead and Its CompoundsGood2015
Nickel and Its CompoundsGood2015
TerbutrynGood2015
Other PollutantsGood2015
Aldrin, Dieldrin, Endrin & IsodrinGood2015
para - para DDTGood2015

Protected areas

PA NameIdDirectiveMore information
South WessexG151Nitrates Directive
Poole HarbourET1Nitrates Directive
Poole HarbourUK11054Ramsar SiteNatural England
Dorset HeathsUK0019857Special Area of ConservationNatural England
Dorset Heaths (Purbeck & Wareham) & Studland DunesUK0030038Special Area of ConservationNatural England
Isle Of Portland To Studland CliffsUK0019861Special Area of ConservationNatural England
Dorset HeathlandsUK11021Ramsar SiteNatural England
Poole Harbour WestUKSW54Shellfish Water Directive
Poole HarbourUK9010111Special Protection AreaNatural England
Tadnoll Brook (including Empool Bottom) NVZS533Nitrates 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
TINCLETON BROOK DS TINCLETON CRESS 505703842016, 20192019
TRIB OF FROME DS ILSINGTON CRESS 505702252016, 20192019
TRIB OF FROME DS WOODSFORD QUARRY 505702192019, 20162019
RIVER FROME AT BOCKHAMPTON 505501302015, 2013, 2016, 2019, 20142022, 2019
9014 90142022
RIVER FROME AT HOLME BRIDGE 505901272019, 2016, 2013, 2015, 20142019, 2022
9066 90662013, 2019, 20162019
FROME/MAIN RIVER SITES/U/S WOODSFORD WLMP/ 364122015, 2013, 2016, 2014
RIVER FROME DS WADDOCK CROSS 505701452016, 20192019
FROME/MILL STREAM AT EAST STOKE/ 136402015, 2013, 2016, 2014, 20192022, 2019
RIVER FROME AT WOOL BRIDGE 505901882013, 2015, 2016, 2019, 20142019
9068 90682013, 2015, 2019, 2016, 20142019, 2022
FROME/MAIN RIVER SITES/LOWER BOCKHAMPTON/ 215352015, 2013, 2016, 2014, 20192019
9057 90572022
RIVER FROME U/S LYTCHETT CONFLUENCE 5059020320192019

Downstream water bodies