Dorset Management Catchment

About

The catchment is predominantly rural, mostly agriculture; arable, dairy and pasture but with some urban influences. In addition to agriculture the other major industry is Tourism - the unique environmental and landscape feature of the area offer many recreational opportunities. Many of the river channels have been modified for flood defence, land drainage for agricultural production and water level management using sluices and impoundments. These modifications have taken place over centuries and many of the historical modifications are now seen as important features of the streams and rivers of the catchment. The catchment includes many protected areas of International and National conservation importance. There are important wetlands at Radipole and Lodmoor and around Poole Harbour, unique coastal features like Chesil Beach and a marine zone in Lyme Bay. The Jurassic Coast is designated a UNESCO World Heritage site. This area has numerous popular bathing beaches - including 38 EU Designated Bathing waters. Poole Harbour has economically important shellfisheries and is of high conservation value. Many of the rivers are highly regarded salmon and trout fisheries, especially the chalk rivers. Additionally there are numerous coarse fishing clubs established through Dorset. The most significant abstractions in this area are for public water supply. Christchurch and Poole Harbours both suffer from nutrient enrichment from diffuse and point sources. The operational catchment formally known as Frome, Piddle, Poole and Purbeck is now known as Poole Harbour Rivers.

Bere Stream at Snatford Bridge

Classifications data for Dorset Management Catchment

Number of water bodies

The number of water bodies in the river basin district. It shows whether these are natural, artificial (such as canals and reservoirs) or have been modified ('heavily modified') for particular uses.

Water body categoriesNaturalArtificialHeavily modifiedTotal
River, canals and surface water transfers640367
Lake1012
Coastal0000
Estuarine0000
Groundwater0000
Total650469

Ecological status for surface waters

Table summarises the current ecological status of surface water bodies. Water bodies are classified as being at high, good, moderate, poor or bad ecological status or potential.

Ecological status or potentialBadPoorModerateGoodHighTotal
Number of water bodies6173312068
Number of water body elements8386989415619

Chemical status for surface waters

Table summarises the current chemical status of water bodies. These are classified as being at good or fail.

Chemical statusFailGoodTotal
Number of water bodies68068
Number of water body elements142745887

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

Quantitative status for groundwater

Table summarises the quantitative status of groundwater water bodies. These are classified as being at good or poor.

Quantitative statusPoorGoodTotal
Number of water bodies000
Number of water body elements000

Chemical status for groundwater

Table summarises the chemical status of groundwater water bodies. These are classified as being at good or poor.

Chemical statusPoorGoodTotal
Number of water bodies000
Number of water body elements000

Challenges data for Dorset Management Catchment

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 issueChanges to the natural flow and level of waterInvasive non-native speciesPhysical modificationsPollution from abandoned minesPollution from rural areasPollution from towns, cities and transportPollution from waste water
Agriculture and rural land management00209200
Domestic general public0000033
Industry0000020
Local & central government0010000
Mining and quarrying0000000
Navigation0000000
No sector responsible0000000
Other0060010
Recreation0000030
Sector under investigation0090000
Urban and transport00100120
Waste treatment and disposal0000010
Water Industry10000042
Total10190922245

Objectives data for Dorset Management Catchment

Ecological status or potential objectives for surface water bodies

Table summarises the ecological status and ecological potential objectives set for water bodies in the river basin management plan. Each water body is only counted once in this table. Each water body objective consists of a target status and a date when it was, or is expected to be, met.

StatusBadPoorModerateGoodHighTotal
By 2015221612032
By 2021022206
By 202700525030
Total242339068

30 of the "by 2027" objectives are low confidence

Chemical status objectives for surface water bodies

Including those with less stringent objectives and extended deadlines

StatusFailGoodTotal
By 206306868
Total06868

0 of the "by 2027" objectives are low confidence

Quantitative status objectives for groundwater

Including those with less stringent objectives and extended deadlines

StatusPoor
GoodTotal
Total000

0 of the "by 2027" objectives are low confidence

Chemical status objectives for groundwater

Including those with less stringent objectives and extended deadlines

StatusPoor
GoodTotal
Total000

0 of the "by 2027" objectives are low confidence

Summary Statistics data for Dorset Management Catchment

Ecological status and potential

Summary statisticRivers, Canals and SWTsLakesEstuariesCoastalSurface Waters Combined
% of water bodies at good or better ecological status/potential18%0%18%
% of biological elements, phys-chem elements and specific pollutants at good or better status80%83%80%
% of water bodies with an objective of good ecological status/potential or better57%50%57%
% of biological elements, phys-chem elements and Specific Pollutants with an objective of good status or better91%100%91%

Chemical

Summary statisticRivers, Canals and SWTsLakesEstuariesCoastalSurface Waters Combined
% of water bodies at good chemical status0%0%0%
% of chemical elements at good status84%94%84%
% of water bodies at good chemical status without uPBT99%100%99%
% of chemical elements at good status without uPBTGreater than 99%100%Greater than 99%
% of water bodies with an objective of good chemical status100%50%99%
% of chemical elements with an objective of good100%100%100%
% of water bodies with an objective of good chemical status without uPBT100%100%100%
% of chemical elements with an objective of good without uPBTs100%100%100%