]> 2026-04-21T06:00:49+00:00 Case study:River Tat Restoration Scheme 500 en Approved Cleaning of spawning gravels Creation of pools and riffles Introducing large woody debris Creation of wooden deflectors Environment Agency Water Management Alliance Natural England Atkins Pynkney Hall Estate Great Britain Yes No Yes false No 52.817755000272,0.75745582580566 Adam Environment Agency Thurtle Cleaning of spawning gravels, Creation of pools and riffles,,Installing riverside fencing,,Introducing large woody debris, Creation of wooden deflectors, ,,, 12588 Water Management Alliance, Natural England, Atkins, Pynkney Hall Estate Restored section of River Tat, March 2014 2014-07-01Z 2456839.5 Restored section of River Tat.jpg 2013-05-01Z 2456413.5 Complete The River Tat is a tributary of the River Wensum and forms part of the River Wensum Site of Special Scientific Interest. The planform and channel geometry has historically been subjected to significant modification including diversions, straightening, widening and the construction of an online lake system. The aim of the restoration work was to ‘kick start’ natural morphological processes throughout the reach. A design report was written for the site which outlined the range of restoration measures that could be used. However, the design was extremely flexible and the location of different features was determined by a combination of expert judgement and working with existing channel features. On the ground works were delivered by an experienced Environment Agency Field Services team who have become skilled at delivering this type of restoration work. In locations where a gravel bed was present, albeit beneath a layer of sand/silt because of the homogeneous character of the water course, gravel glides have been restored by re-distributing the bed material to form glide-pool sequences. The water velocity has been increased by narrowing the channel, using features such as earth berms and woody debris, resulting in a clean gravel bed. Deep pools have been dug to introduce variations in bed levels, providing flow diversity and creating resting areas for fish. A key restoration measure has been the installation of Large Woody Debris (LWD). Reducing tree cover in heavily shaded areas, by selective coppicing, provides a sustainable source of material. This also allows light onto the river, promoting marginal vegetation to establish. LWD has introduced flow diversity, helping keep the gravels free from silt and providing overhead cover for fish. River Tat Restoration Scheme river tat restoration scheme No Broadland Rivers Anglian Installing riverside fencing Tat tat 10 - 100 km² 68 Less than 100 m Tat GB105034051140 Fisheries Flood risk management Habitat and biodiversity Hydromorphology Land use management - agriculture Monitoring GB105034051140 Tat 2014-03-23T12:22:55Z 2456740.0159144 2017-05-31T12:14:33Z 2457905.0101042 River Tat Restoration Scheme 500 1 plainlist 5 [[Category:Case study]] [[Project title::!River Tat Restoration Scheme]] [[Subcatchment title::Tat]] River Tat Restoration Scheme# QUERY68cf74c6e09bfb854b88c332ca1e6438