]> 2026-04-07T16:15:47+00:00 Case study:West Lexham Rehabilitation Project 500 en NAR Spring 2011 - as built project report.pdf River Nar Rehabilitation summary report by Nigel Holmes Approved River Restoration Centre Environment Agency Norfolk County Council Natural England Great Britain No Yes Yes false No 52.71939191292,0.72079002857208 Nigel T.H. Holmes ,, ,,, 5603 River Restoration Centre, Environment Agency, Norfolk County Council, Natural England, site location of works 2011-03-04Z 2455624.5 West lexham.png 2011-02-28Z 2455620.5 Complete A half day work to remove the impounding influence of a weir, and in the channel upstream four pools and runs were dug. A second weir, between two bridges c35m downstream of the one shown in the images, was also removed. This structure had minimal impact on habitat, but was an impediment to easy migration of fish etc. wishing pass upstream. The structure within the meadow that was impounding the Nar upstream had some archaeological interest. For this reason there was a ‘watching brief’ from Norfolk County Council to ensure there was no damage done to any known existing interest features, and to record anything else of interest should this be revealed during the removal of the impounding structure. To minimise damage to the historical elements of the bridge, the concrete ‘boards’ were removed with great care, leaving the central pillar and upper lintel in place, yet drawing the bed down to the required level. The effect of centuries of impoundment has been to create a sluggish/non-existent flow in the river upstream with the resultant deposition of thick layers of mud. Pools were created by widening the channel locally. To help keep the pools clear in the future, the channel was narrowed upstream. Due to the extreme depth of soft mud, narrowing was achieved by pushing in one side of the existing river edge with the back of the bucket, and the void created behind this was filled with the arisings from creating the pools. Four pools and upstream ‘runs’ were created, with the run formed upstream of the second pool from the top having a small amount of gravel spread on the bed – this was won from the bed of the river in the pool downstream. West Lexham Rehabilitation Project west lexham rehabilitation project No North West Norfolk Anglian Nar to confl with Blackborough Drain nar to confl with blackborough drain West Lexham west lexham 100 - 1000 km² 95 Less than 100 m Nar to confl with Blackborough Drain GB105033047791 Habitat and biodiversity GB105033047791 Nar to confl with Blackborough Drain 2013-04-09T11:00:30Z 2456391.9586806 2015-10-23T14:33:52Z 2457319.1068519 West Lexham Rehabilitation Project 500 1 plainlist 5 [[Category:Case study]] [[Project title::!West Lexham Rehabilitation Project]] [[Subcatchment title::Nar to confl with Blackborough Drain]] West Lexham Rehabilitation Project# QUERY7fc0153c6c94c0c1a1271c2b887ff049 500 1 list 3 [[Category:Case study]] [[Parent project::Case study:West Lexham Rehabilitation Project]] West Lexham Rehabilitation Project# QUERYf1700a68962d0c5991bb21cdf335ca8b