Natural Flood Management (NFM) has become an important part of the Trent Rivers Trust’s work as extreme weather events are becoming more prevalent and are continuing to negatively affect local communities in the Trent Catchment.
Trent Rivers Trust is one of the leading organisations delivering NFM across the Trent catchment. Look at our online leaflet and watch the video to learn more about NFM (links to the right).
NFM aims to reduce the flood peak and delay water travelling downstream which can help increase the time available to prepare for floods. This can be achieved by storing water using natural features such as ponds and backwaters from the main channel, and by slowing water by increasing resistance to flow through the installation of a ‘leaky barrier’ in the channel.
NFM aims to restore natural processes by storing water within the upper parts of the catchment, in order to reduce flood risk downstream. Many types of NFM features exist, at TRT we design each feature specifically to the characteristics of a site, in conjunction with the landowner. NFM features such as ‘small earth bunds’ store water before it reaches the watercourse, draining slowly over a period of hours once floodwaters have passed. Other NFM features are designed to store water within the watercourse itself. ‘Leaky barriers’ not only store water behind them during high flow events, but also increase the roughness in the channel to decrease the velocity of water moving downstream. Think of it this way: it’s much harder for us to run through long vegetation when compared to running on a concrete surface! The same is true for water.
NFM also brings wider benefits. Additional benefits might include river restoration, enhancing biodiversity and trapping diffuse pollution.
TRT has significant experience in scoping and delivering NFM projects. We regularly work farmers, landowners, City, County and Parish Councils, the Environment Agency and at-risk residents. Our methods allow for detailed opportunity mapping of NFM interventions through GIS analysis, detailed and careful landowner liaison. We have proudly delivered a number of successful NFM projects with a positive lasting legacy for local communities.