]> 2026-04-22T07:52:26+00:00 Case study:River Little Ouse at Thetford 500 en RRC Manual of River Restoration Techniques entry Approved Creation of pools and riffles Yes No No Improvement Deterioration No Yes Invertebrates: Diversity,No,Yes,No,Yes,No,Improvement Macrophytes,No,Yes,Yes,No,No,Deterioration Invertebrates: Diversity Macrophytes Yes No Reconnection of cutoff meander British Trust for Ornithology Great Britain Yes No Yes false Yes No No Yes Width & depth variation,No,Yes,Yes,No,No, Width & depth variation No Meanders reopened Little Ouse.jpg Breach 2002.jpg Clay bank 2002.JPG Clay bank breach 2004.JPG Vegetated banks Dec 2005.jpg Bank erosion April 2008.JPG Reopening the meanders Breach of meanders - 2002 Bank reinforcement - Oct 2003 Breach of reinforced bank - March 2004 Pre-seeded coir matting - Dec 2005 Erosion of coir matting - April 2008 No 52.398989770293,0.74861962348223 Chris British Trust for Ornithology Gregory Creation of pools and riffles,,Creation of backwaters, Habitat creation, Habitat restoration, Creation of pond,,Reconnection of cutoff meander, ,,, 6022 Little Ouse following restoration 1994-07-01Z 2449534.5 Restored Little Ouse.jpg 1994-04-01Z 2449443.5 Complete In 1991 the site and adjacent land were purchased by the BTO to create a wetland bird reserve. The Little Ouse had previously been straightened and flowed in a trapezoidal channel. In-stream habitat was poor, macrophytes were confined mainly to the shallow margins and the substrate was dominated by sand with some silt and gravel. The Environment Agency were approached to assist with restoring flows to the original, meandering course which remained as a damp depression. By restoring flows to the old channel 900m of diverse river habitat with varied morphology and a connection to the floodplain was gained. Problems have been experienced with the breaching of several banks at meanders and the development of permanently ponded areas (the original design was aimed at encouraging seasonal inundation to create suitable nesting habitats for waders such as lapwing). Several attempts have been made to repair these breaches with techniques such as blue clay banks and pre-seeded coir matting Further remediation works are planned for September 2013 and will consist of the creation of 'living revetments'. The approximate cost of this additional work is £6,000. River Little Ouse at Thetford river little ouse at thetford No 900 Cam and Ely Ouse (including South Level) Anglian Creation of backwaters Habitat creation Habitat restoration Creation of pond Little Ouse River little ouse river River Little Ouse at Thetford river little ouse at thetford Wading birds (e.g. Lapwing) 100 - 1000 km² 68 Less than 100 m Little Ouse River GB105033043400 Flood risk management Habitat and biodiversity 17.3 10 - 50 k€ GB105033043090 Little Ouse 2013-07-16T14:59:27Z 2456490.1246181 2019-01-02T16:52:30Z 2458486.203125 River Little Ouse at Thetford 500 1 plainlist 5 [[Category:Case study]] [[Project title::!River Little Ouse at Thetford]] [[Subcatchment title::Little Ouse River]] River Little Ouse at Thetford# QUERY2070231551ecffddf0a35b3537d8dce9