Integrated Hydrological Units of the United Kingdom: Hydrometric Areas with Coastline

This dataset is part of Integrated Hydrometric Units (IHU) of the UK. Hydrometric Areas are used to organise river flow measurement and hydrometric data collection in the UK. Hydrometric Areas are either integral river catchments having one or more outlets to the sea or tidal estuary, or they may include several contiguous river catchments having topographical similarity but separate tidal outlets. In mainland Britain they are numbered from 1 to 97 in clockwise order around the coast commencing in north east Scotland. The larger islands and groups of islands are numbered from 100-108. Ireland has a unified numbering system from 1 to 40 commencing with the River Foyle catchment and circulating clockwise; not all Irish Hydrometric Areas, however, have an outlet to the coast. Only those Hydrometric Areas covering Great Britain and Northern Ireland are included in this dataset. The boundaries between hydrometric areas correspond to catchment boundaries as digitally-derived from CEH Integrated Hydrological Digital Terrain Model (IHDTM) using a catchment definition program. It should be noticed that the Northern Ireland data are clipped to its political boundary so not every Hydrometric Area in this region is completely represented. The naming and numbering convention for the hydrometric areas in Great Britain was originally defined by the Inland Water Survey Committee (and first published in the Surface Water Year-Book of Great Britain 1936-37). For Northern Ireland the system was developed by a multi-agency working group in the 1970s (and first published in Surface Water: United Kingdom 1971-73. Note that full citations of those two publications are provided as additional information source. This dataset represent the same entities as the IHU Hydrometric Areas of the UK without Coastline, however, the outer boundaries of the units follow coastline published by the Ordnance Survey (Meridian 2), rather than the boundaries of the CEH Integrated Hydrological Digital Terrain Model. Full details about this dataset can be found at https://doi.org/10.5285/1957166d-7523-44f4-b279-aa5314163237

Identification info

Metadata Language: English (en)

Character set: utf8

Dataset Reference Date (): 2014-06-23

Identifier: CEH:EIDC: / 1425380978274

Identifier: https://catalogue.ceh.ac.uk/id/1957166d-7523-44f4-b279-aa5314163237

Identifier: doi: / 10.5285/1957166d-7523-44f4-b279-aa5314163237

Other citation details: National River Flow Archive (2014). Integrated Hydrological Units of the United Kingdom: Hydrometric Areas with Coastline. NERC Environmental Information Data Centre 10.5285/1957166d-7523-44f4-b279-aa5314163237

UK Centre for Ecology & Hydrology - National River Flow Archive

Centre for Ecology & Hydrology

Centre for Ecology & Hydrology - National River Flow Archive

NERC EDS Environmental Information Data Centre

NERC Environmental Information Data Centre

Maintenance and update frequency: asNeeded

GEMET - INSPIRE themes, version 1.0 ()

Hydrography

GeoNames

Keywords

Water Resources
Hydrology
Rees Section
Great Britain
hydrometric areas
hydrometry

Limitations on Public Access: otherRestrictions

Other constraints: Registration is required to access this data

Use constraints: otherRestrictions

Other constraints: Licence, copyright and IPR apply

Use constraints: otherRestrictions

Other constraints: If you reuse this data, you should cite: National River Flow Archive (2014). Integrated Hydrological Units of the United Kingdom: Hydrometric Areas with Coastline. NERC Environmental Information Data Centre https://doi.org/10.5285/1957166d-7523-44f4-b279-aa5314163237

Spatial representation type: vector

Distance: 50 urn:ogc:def:uom:EPSG::9001

Topic category

Inland waters

Begin date: 2014-06-23

Code: OSGB 1936 / British National Grid

Distribution Information

Data format

Shapefile ()

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Resource Locator: Download the data
Download a copy of this data

Resource Locator: Supporting information
Supporting information available to assist in re-use of this dataset.

Resource Locator: Map view service
This link returns a WMS GetCapabilities response in XML format

Quality Scope: dataset

Other: dataset

Report

Dataset Reference Date (): 2010-12-08

Statement: The hydrometric areas are based on watershed derived from the Integrated Hydrological Digital Terrain Model (IHDTM) elevation grid using an in-house catchment definition program. In Great Britain the coastline corresponds to the OS Meridian2 coastline. In Northern Ireland the boundary and coastline was derived from OS Panorama data in times when Ordnance Survey covered Northern Ireland. All boundaries have been processed to ensure they are topologically correct; there are no gaps or overlaps so every point in the country is allocated to one and only one Hydrometric Area

Metadata

File identifier: 1957166d-7523-44f4-b279-aa5314163237 XML

Metadata Language: English (en)

Character set: ISO/IEC 8859-1 (also known as Latin 1)

Resource type: dataset

Hierarchy level name: dataset

Metadata Date: 2023-04-27T14:31:09

Metadata standard name: UK GEMINI

Metadata standard version: 2.3

Environmental Information Data Centre

Lancaster Environment Centre, Library Avenue, Bailrigg , Lancaster , LA1 4AP , UK

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