The NRFA is the UK's focal point for river flow data. Collating, quality control and archive hydrometric data from gauging station networks across the UK including the extensive networks operated by the Environment Agency (England), Natural Resources Wales, the Scottish Environment Protection Agency and the Department for Infrastructure - Rivers. The NRFA holds a wide range of hydrological information to assist in the understanding and interpretation of measured river flows. In addition to a time series of gauged river flow, the data centre maintains hydrometric information relating to the gauging stations and the catchments they command and data quantifying other parts of the hydrological cycle.