River flow gauging station on the river Kennet Catchment land useNRFA Leaflet

Gauging station map

Welcome to the National River Flow Archive

The National River Flow Archive (NRFA) is the UK’s focal point for river flow data.

The NRFA collates, quality controls, and archives 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 Rivers Agency (Northern Ireland).

Search for NRFA data

Find gauging stations, view site/catchment information and download flow data.
NRFA Data Holdings

Discover what data are held by the NRFA.
Peak Flow Data

Explore the *NEW* peak flow data holdings (previously provided by HiFlows-UK).

National Hydrological Monitoring Programme - analysis of hydrological events.

UK Hydrological Summary for February 2015 published - 12 March 2015A word cloud based on hydrological summaries authored by Terry Marsh

Rainfall amounts varied substantially across the country in February 2015 although, at the national scale, weather conditions were typical of the late winter. River flows generally continued their late January recessions during early February although there was a recovery later in the month. The number of fluvial flood alerts was modest for the time of year. With soils remaining wet and an unsettled start to March, the water resources outlook remains healthy.

This Summary is the last to be authored by Terry Marsh before his retirement – please see the NHMP Team’s message on the third page.

Further details can be found here.




NRFA Review of the Year - 09 March 2015

The UK Surface and Groundwater Archives Committee convened for its 32nd annual meeting at CEH’sNRFA Review of the Year Wallingford Headquarters in the last week. The Committee which comprises representatives of organisations from across the UK involved in the measurement, management or use of hydrometric data. Amongst the items discussed at this year’s meeting was a review of the activities of the NRFA over the last 12 months.

Further details can be found here.


Special Issue on Climate change on water in the UK published - 20 February 2015

Climate change and water in the UK past changes and future prospects was published in special issue of Progress in Physical Geography. The paper reviews the impact of anthropogenic climate change on water in the UK and looks at projections of future change. The special issue also features the paper “Climate-driven changes in the UK river flows: A review of the evidence”, authored by Jamie Hannaford of the NRFA. The paper assess the evidence for climate change influences on UK river flow, including floods and droughts.

Further details can be found here.

Integrated Hydrological Units of the United Kingdom dataset released - 18 February 2015

A new freely available dataset of spatial reference units for hydrological purposes, called "Integrated Integrated Hydrological Unit MapHydrological Units of the United Kingdom" has been released. The dataset will aid hydrological analysis and water management in the UK by providing a consistent, nationwide framework for segregating river catchments into component parts. It also serves as a reference list of major river names and, by indicating which units are connected, it can be used to trace the flow of rivers across the country.

More information can be found here.

Paper on the 2013/2014 winter floods published- 05 February 2015

Flooding Chalgrove February 2014A paper authored by Katie Muchan, Jamie Hannaford and Simon Parry of the NRFA, in collaboration with Melinda Lewis at the British Geology Survey has been published in a special issue of Weather, one year on from the 2013/2014 winter floods.


Further details can be found here.

Click here for an archive of NRFA news items


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