-
Flood Defence Structures
The National Flood Asset Database records flood infrastructure in Wales managed by Lead Local Flood Authorities (LLFAs) and Natural Resources Wales (NRW). It includes many... -
Large Raised Reservoir (Registered information)
This dataset contains details of Large Raised Reservoirs. Natural Resources Wales (NRW) collects and maintains data on reservoirs designed or capable of holding more than 10,000... -
Large Raised Reservoir register (Locations and undertakers)
This dataset contains details of Large Raised Reservoirs in Wales. Natural Resources Wales (NRW) collects and maintains data on all reservoirs designed or capable of holding... -
River Levels Application Programming Interface (API)
This dataset covers monitoring data that is updated on our systems on a minimum of a daily update cycle. This is increased during times of flooding etc. Measurements of the... -
Flood Risk Forecast Application Programming Interface (API)
The flood risk forecast is produced by the Flood Forecasting Centre (FFC) on a daily basis. It is issued more frequently when serious flooding is forecast. It provides the... -
Historic Flood Warnings and Flood Alerts
These datasets show all messages issued for flooding from rivers or the sea in Wales since 2006. There are three flood warning codes: Flood Alert - flooding is possible; be... -
National River Flow Archive (NRFA)
The National River Flow Archive (NRFA) is the UK's focal point for river flow data and is the primary archive of daily and peak river flows for the United Kingdom. The archive... -
Natural Resources Wales (NRW) Operational Areas
This is a spatial dataset containing the extent polygons for the Natural Resources Wales Operational Areas. This dataset shows the six main operational areas: - North East Wales... -
Risk of Flooding from Rivers and Seas (RoFRS) (archived data)
This dataset has been superceded by the Flood Risk Assessment Wales dataset. It is therefore no longer updated. You can still view your risk of flooding by postcode on our... -
Flood Risk Areas (Cycle 1)
The Cycle 1 Flood Risk Areas are those communities in Wales where most significant flood risks exist from surface water flooding only (from surface water run-off, groundwater... -
Live Flood Warnings and Alerts Application Programming Interface (API)
Flood Warnings are provided by the constant monitoring of stations and forecasting flooding from rivers or the sea: Severe Flood Warning: Severe flooding. Danger to life. Flood... -
Flood Alert Areas
Flood Alert Areas are geographical areas where it is possible for flooding to occur from rivers or the sea. A single Flood Alert Area may cover the floodplain within the Flood... -
Flood Warning Areas
This spatial Flood Warning Areas dataset are geographical areas where NRW expect flooding to occur and where NRW provide a Flood Warning Service. Flood Warning Areas generally... -
Flood Storage Areas
Flood Storage Areas show those areas that act as a balancing reservoir, storage basin or balancing pond. Their purpose is to attenuate an incoming flood peak to a flow level... -
Recorded Flood Extents
Recorded Flood Extents shows areas that have been recorded to have flooded in the past from rivers, the sea or surface water. The records come from a number of evidence sources...