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Ecological and chemical classification for surface waters |

Ecological status or potential Chemical status
Number of water bodies

Chemical and quantitative classification for groundwater |

Quantitative status Chemical status
Number of water bodies

Summary of ecological status or potential and chemical status and objectives for surface water bodies (number of water bodies) including those with less stringent objectives and extended deadlines (blue shaded cells)

Summary of quantitative and chemical status objectives for groundwater (number of water bodies) including those with less stringent objectives and extended deadlines (blue shaded cells)

Reasons for not achieving good status and reasons for deterioration in this

The table below shows the number of reasons for not achieving good status (RNAGS) and reasons for deterioration (RFD), split by sector.

Numbers of measures split by sector

This table shows the number of confident measures in the catchment.

{"type":"Operational Catchment","management-catchment-label":"London","river-basin-district-label":"Thames","management-catchment":"ManagementCatchment/3049","river-basin-district":"RiverBasinDistrict/6","label":"Brent Rivers and Lakes","description":"The Brent has extensive tributaries in north and west London. They converge with the Brent at the Brent Reservoir and near Wembley Stadium. Some stretches of the river have kept their original shape, but many are modified, with major roads and railways, industrial estates and housing built up to the waterÔÇÖs edge. These developments are associated with pollution, while people have limited opportunities to visit and enjoy the river. Lower down, the Brent is navigable, forming part of the Grand Union Canal. A branch of the Canal coming from Slough crosses the Brent, and is included in this operational catchment.","rbd-hyperlink":"https://www.gov.uk/government/collections/river-basin-management-plans-2015","photoAltText":"Canoe clean-up at Clitherow's Island","id":"3044","wbagg":{"header":["Water body categories","Natural","Artificial","Heavily modified","Total"],"aggregations":[{"Water body categories":"River, canals and surface water transfers ","Natural":0,"Artificial":0,"Heavily modified":4,"Total":4},{"Water body categories":"Lake","Natural":0,"Artificial":2,"Heavily modified":0,"Total":2},{"Water body categories":"Coastal","Natural":0,"Artificial":0,"Heavily modified":0,"Total":0},{"Water body categories":"Estuarine","Natural":0,"Artificial":0,"Heavily modified":0,"Total":0},{"Water body categories":"Groundwater","Natural":0,"Artificial":0,"Heavily modified":0,"Total":0},{"Water body categories":"Total","Natural":0,"Artificial":2,"Heavily modified":4,"Total":6}]},"classificationstatus":{"surfaceWrapper":{"chemical":{"header":[{"color":"#FF0000","type":"Fail"},{"color":"#00CC00","type":"Good"}],"status":{"2016 Cycle 2":{"Good":6,"Fail":0},"2015 Cycle 2":{"Good":6,"Fail":0}}},"ecological":{"header":[{"color":"#FF0000","type":"Bad"},{"color":"#FFA500","type":"Poor"},{"color":"#FFFF00","type":"Moderate"},{"color":"#00CC00","type":"Good"},{"color":"#0000FF","type":"High"}],"status":{"2016 Cycle 2":{"High":0,"Moderate":6,"Bad":0,"Poor":0,"Good":0},"2015 Cycle 2":{"High":0,"Moderate":6,"Bad":0,"Poor":0,"Good":0}}},"total":{"header":[{"color":"total","type":"#ffffff"}],"status":{"2016 Cycle 2":{"total":6},"2015 Cycle 2":{"total":6}}}},"yearandcycles":["2016 Cycle 2","2015 Cycle 2"]},"measureRnagagg":{"measureRNAGdata":{"data":[{"sector":"Agriculture and rural land management","rfd":0,"rnag":0,"total":0,"measureCount":0},{"sector":"Domestic General Public","rfd":2,"rnag":11,"total":13,"measureCount":4},{"sector":"Industry","rfd":0,"rnag":0,"total":0,"measureCount":0},{"sector":"Local and Central Government","rfd":0,"rnag":3,"total":3,"measureCount":3},{"sector":"Mining and quarrying","rfd":0,"rnag":0,"total":0,"measureCount":0},{"sector":"Navigation","rfd":0,"rnag":3,"total":3,"measureCount":0},{"sector":"No sector responsible","rfd":0,"rnag":0,"total":0,"measureCount":0},{"sector":"Other","rfd":0,"rnag":1,"total":1,"measureCount":0},{"sector":"Recreation","rfd":0,"rnag":2,"total":2,"measureCount":0},{"sector":"Sector under investigation","rfd":0,"rnag":1,"total":1,"measureCount":0},{"sector":"Urban and transport","rfd":1,"rnag":26,"total":27,"measureCount":9},{"sector":"Waste treatment and disposal","rfd":0,"rnag":0,"total":0,"measureCount":0},{"sector":"Water Industry","rfd":0,"rnag":13,"total":13,"measureCount":0}]},"measureHeader":{"Sector":"sector","Number of measures":"measureCount"},"rnagHeader":{"Sector":"sector","RFD":"rfd","RNAG":"rnag","Grand Total":"total"},"measureFooter":["Grand Total","16"],"rnagFooter":["Grand Total","3","60","63"]},"objectivestatus":{"surfaceWrapper":{"tables":{"Chemical status":{"tablename":"Chemical status","header":[{"color":"#FF0000","type":"Fail"},{"color":"#00CC00","type":"Good"},{"color":"#ffffff","type":"Total"}],"status":{"Beyond 2027":{"Total":0,"Good":0,"Fail":0},"By 2021":{"Total":0,"Good":0,"Fail":0},"Total":{"Total":6,"Good":6,"Fail":0},"By 2015":{"Total":6,"Good":6,"Fail":0},"By 2027":{"Total":0,"Good":0,"Fail":0}}},"Ecological status or potential":{"tablename":"Ecological status or potential","header":[{"color":"#FF0000","type":"Bad"},{"color":"#FFA500","type":"Poor"},{"color":"#FFFF00","type":"Moderate"},{"color":"#00CC00","type":"Good"},{"color":"#0000FF","type":"High"},{"color":"#ffffff","type":"Total"}],"status":{"Beyond 2027":{"High":0,"Bad":0,"Poor":0,"Moderate":0,"Total":0,"Good":0},"By 2021":{"High":0,"Bad":0,"Poor":0,"Moderate":0,"Total":0,"Good":0},"Total":{"High":0,"Bad":0,"Poor":0,"Moderate":0,"Total":6,"Good":6},"By 2015":{"High":0,"Bad":0,"Poor":0,"Moderate":0,"Total":0,"Good":0},"By 2027":{"High":0,"Bad":0,"Poor":0,"Moderate":0,"Total":6,"Good":6}}}},"byyears":[]},"byyears":["By 2015","By 2021","By 2027","Beyond 2027","Total"]},"legend":[{"type":"Operational Catchment","color":"#333366"}]}