UNITED KINGDOM · WALES · LANDSCAPE · WATER
Main Rivers (Wales)
ProDrawn as linesVisible at national scaleIn the app's radius search
What this layer shows
The statutory main rivers in Wales, where works in, over, under or near the river need a flood risk activity permit from Natural Resources Wales. Other watercourses are ordinary watercourses regulated by the local authority.
Where the data comes from
WFS · datamap.gov.wales
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Facts shown for each feature
Length (km)
Other layers in this group
- Nitrate Vulnerable Zones 2013 (Wales)
- Internal Drainage Districts
- Nitrate Vulnerable Zones 2021
- Drinking Water Safeguard Zones (Surface)
- Drinking Water Safeguard Zones (Groundwater)
- Principal Salmon Fisheries (England)
- Bathing Waters (England)
- Bathing Waters (Scotland)
- Bathing Waters (Wales)
- Bathing Waters (Northern Ireland)
- Groundwater Bodies (WFD 2025)
- River Water Body Catchments (WFD 2025)