]> 2026-04-21T10:14:06+00:00 Case study:River Marden at Calne 500 en RRC Manual of River Restoration Techniques entry - Creation of meandering channel and replacement of concrete weirs RRC Manual of River Restoration Techniques entry - Installation of simulated bedrock outcrops RRC Manual of River Restoration Techniques entry - Urban riverside access Approved Bedrock cascades and outcrops Creation of pools and riffles Creation of shoals/berms Weir removal Yes No No Improvement Yes Fish,No,Yes,Yes,No,No,Improvement Fish No Re-meandering Nicholas Pearson Associates Great Britain Yes No Yes true Marden before.jpg Marden before upstream.png 2012.JPG Floods 2012.JPG Calne Duck Race 19.05.07 0192.jpg River Marden before restoration looking downstream River Marden before restoration looking upstream Re-meandered channel and riverside access - 2012 Scheme holding up well in floods - 2012 Calne charity duck race - 2007 No 51.438090813061,-2.0041919010691 Paul Nicholas Pearson Associates Jolliffe Bedrock cascades and outcrops, Creation of pools and riffles, Creation of shoals/berms, Weir removal,,Public access to the river,,Re-meandering, Replacement existing culvert with twin culvert,,Improved public access, Focal point for local events, Replacement existing culvert with twin culvert 6069 Plan of restored reach 1999-09-30Z 2451451.5 Marden schematic.jpg 1999-03-01Z 2451238.5 Complete Following the demolition of a town centre factory, the River Marden through Calne flowed in a straight concrete channel and two small weirs barred the passage of fish. Urban regeneration, and the resultant redevelopment of the site, meant that the river had to be diverted south of its existing course and the opportunity was taken to improve the character of the river and create a public amenity. The diversion was undertaken in the form of a double meander so that natural geomorphological features such as shoals, riffles and pools could be incorporated, along with public access to the river and the creation of a variety of sustainable, attractive habitats for flora and fauna. The scheme has been a success and the river is now a focal point of the town and the centerpiece for the towns annual duck race! River Marden at Calne river marden at calne No 100 Bristol Avon and North Somerset Streams Severn Public access to the river R Marden - conf Abberd Bk to conf unnamed trib r marden - conf abberd bk to conf unnamed trib River Marden at Calne river marden at calne Improved public access Focal point for local events 10 - 100 km² 114 100 - 200 m R Marden - conf Abberd Bk to conf unnamed trib GB109053022060 Exact costs for the project are not available but would have been "considerable" given the works required Flood risk management Habitat and biodiversity Social benefits GB109053022060 R Marden - conf Abberd Bk to conf unnamed trib 2013-07-24T14:20:39Z 2456498.0976736 2019-01-02T15:00:57Z 2458486.1256597 River Marden at Calne 500 1 plainlist 5 [[Category:Case study]] [[Project title::!River Marden at Calne]] [[Subcatchment title::R Marden - conf Abberd Bk to conf unnamed trib]] River Marden at Calne# QUERY6fe49e80670796b2eab0b592f1468451