polygon

Three datasets from the Environment Agency covering England and Wales showing eutrophic lakes, and eutrophic and nitrates rivers.

There three datasets are -

Environment Agency water management area administrative boundaries at 1:10,000 for England and Wales.

The Environment manages water by area and region. Data types include -

• Administrative boundaries - Water Management Areas (Polygon)
• Administrative boundaries - Water Management Regions (Polygon)

Supply format: Shape file / Tab / GML and other

Data availability: Available under the Open Government Licence (OGL).

Other conditions may apply and these are available via the download site.

A 50m grid interval DTM derived by the Centre for Ecology & Hydrology from 1:50,000 scale mapping from Ordnance Survey and Land & Property Services (previously OSNI). The IHDTM is comprised of five separate gridded datasets.

Each IHDTM grid is hydrologically consistent with the other IHDTM grids and with the CEH 1:50,000 Watercourse Network dataset.

The five gridded datasets are -

Recorded Flood Outlines of Individual Events contains the records of historic flooding.

The Environment Agency's Recorded Flood Outline dataset contains each individual flood outline in England and Wales. If a town has flooded for example four times and there are suitable records of this, the dataset will contain an outline for each separate flood event. It would be possible to overlay outlines on top of each other.

Supply format: Shape file / Tab / GML and other