Ranworth Broad Water Body Poor ecological status
Attributes Water Body ID GB30536050 Water Body Type Lake Hydromorphological designation heavily modified NGR TG3557315344 Altitude 2 m Mean depth 1.5 m Surveillance Water Body No Surface area 0.366 km2 Surface area 36.572 ha Catchment area 340 ha Classifications Classification Item 2019 2022 Ecological Poor Poor Biological quality elements Poor Poor Macrophytes and Phytobenthos Combined Poor Poor Macrophytes Sub Element Poor Poor Phytoplankton Poor Poor Physico-chemical quality elements Moderate Moderate Ammonia (Phys-Chem) High High Salinity Moderate High Total Nitrogen Poor Poor Total Phosphorus Moderate Moderate Hydromorphological Supporting Elements Supports good Supports good Hydrological Regime High High Supporting elements (Surface Water) Moderate Moderate Expert Judgement Moderate Moderate Mitigation Measures Assessment Moderate or less Moderate or less Chemical Fail Does not require assessment Priority hazardous substances Fail Does not require assessment Benzo(a)pyrene Good Dioxins and dioxin-like compounds Good Heptachlor and cis-Heptachlor epoxide Good Hexabromocyclododecane (HBCDD) Good Hexachlorobenzene Good Hexachlorobutadiene Good Mercury and Its Compounds Good Perfluorooctane sulphonate (PFOS) Good Polybrominated diphenyl ethers (PBDE) Fail Priority substances Good Does not require assessment Fluoranthene Good Other Pollutants Does not require assessment Does 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 Type SWMI Activity Category Classification Element More information RNAG Physical modification Other (not in list, must add details in comments) Recreation Mitigation Measures Assessment Details RNAG Diffuse source Poor nutrient management Agriculture and rural land management Total Phosphorus Details RNAG Diffuse source Poor nutrient management Agriculture and rural land management Phytoplankton Details RNAG Diffuse source Other (not in list, must add details in comments) Agriculture and rural land management Total Nitrogen Details RNAG Diffuse source Poor nutrient management Agriculture and rural land management Macrophytes and Phytobenthos Combined Details RNAG Physical modification Other (not in list, must add details in comments) Navigation Mitigation Measures Assessment Details RNAG measures delivered to address reason, awaiting recovery Not applicable No sector responsible Polybrominated 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 issue Physical modifications Pollution from waste water Pollution from towns, cities and transport Changes to the natural flow and level of water Invasive non-native species Pollution from rural areas Pollution from abandoned mines Agriculture and rural land management 0 0 0 0 0 1 0 Industry 0 0 0 0 0 0 0 Mining and quarrying 0 0 0 0 0 0 0 Navigation 1 0 0 0 0 0 0 Urban and transport 0 0 0 0 0 0 0 Water Industry 0 0 0 0 0 0 0 Local & central government 0 0 0 0 0 0 0 Domestic general public 0 0 0 0 0 0 0 Recreation 1 0 0 0 0 0 0 Waste treatment and disposal 0 0 0 0 0 0 0 Other 0 0 0 0 0 0 0 No sector responsible 0 0 0 0 0 0 0 Sector under investigation 0 0 0 0 0 0 0 Total 2 0 0 0 0 1 0
Objectives Classification Item Status Year Reasons Ecological Moderate 2027 - Low confidence Disproportionately expensive: Disproportionate burdens Biological quality elements Moderate 2027 - Low confidence Disproportionately expensive: Disproportionate burdens Macrophytes and Phytobenthos Combined Moderate 2027 - Low confidence Disproportionately expensive: Disproportionate burdens Phytoplankton Good 2027 - Low confidence Disproportionately expensive: Disproportionate burdens Physico-chemical quality elements Good 2027 - Low confidence Disproportionately expensive: Disproportionate burdens Ammonia (Phys-Chem) Good 2015 Salinity Good 2015 Total Nitrogen Good 2027 - Low confidence Disproportionately expensive: Disproportionate burdens Total Phosphorus Good 2027 - Low confidence Disproportionately expensive: Disproportionate burdens Hydromorphological Supporting Elements Supports good 2015 Hydrological Regime Supports good 2015 Supporting elements (Surface Water) Good 2027 - Low confidence Disproportionately expensive: Disproportionate burdens Expert Judgement Good 2027 - Low confidence Disproportionately expensive: Disproportionate burdens Mitigation Measures Assessment Good 2027 - Low confidence Disproportionately expensive: Disproportionate burdens Specific pollutants Not assessed 2015 Chemical Good 2063 Natural conditions: Chemical status recovery time Priority hazardous substances Good 2063 Natural conditions: Chemical status recovery time Benzo(a)pyrene Good 2015 Dioxins and dioxin-like compounds Good 2015 Heptachlor and cis-Heptachlor epoxide Good 2015 Hexabromocyclododecane (HBCDD) Good 2015 Hexachlorobenzene Good 2015 Hexachlorobutadiene Good 2015 Mercury and Its Compounds Good 2015 Perfluorooctane sulphonate (PFOS) Good 2015 Polybrominated diphenyl ethers (PBDE) Good 2063 Natural conditions: Chemical status recovery time Priority substances Good 2015 Fluoranthene Good 2015 Other Pollutants Does not require assessment 2015
Protected areas PA Name Id Directive More information The Broads UK0013577 Special Area of Conservation Natural England Broadland UK9009253 Special Protection Area Natural England Broadland UK11010 Ramsar Site Natural England Norwich Crag and Gravels G79 Nitrates Directive Bure Broads Eutrophic lake NVZ EL107 Nitrates Directive Ranworth Broad UKENLK162 Urban Waste Water Treatment 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 Site Cycle 1 Cycle 2 Cycle 3 RANWORTH BROAD BUR170A 2014, 2012, 2013, 2009 2015, 2019, 2016, 2014, 2013 2019, 2022 162052 162052 2014, 2012, 2013 2013, 2019, 2016, 2015, 2014 2019 146647 146647 2016, 2019 2022, 2019