]> 2026-04-14T06:40:22+00:00 Case study:Ravensbourne/Pool confluence weir bypass channel 500 en Draft Bypass channel Environment Agency Great Britain Defra WFD funded Yes No Yes false No August 2012 update - Confluence bypass channel is not complete, due to the presence of Japanese Knotweed the project could not be totally completed, a deflector was put in and the channel dug but it is not working. In base of visit in August: the channel is dry. 51.43962097168,-0.026305852457881 Peter Environment Agency Gray ,,Bypass channel, ,,, 12761 2012-01-01Z 2455927.5 Complete The existing bypass channel does not function. Requires a redesign to push more flow through it and to make it more attractive to fish. This structure just upstream of the confluence of the Ravensbourne with the Pool River. It is a sloping-back weir with a head loss of about 437 mm. Some eel passage is likely to be possible at low flows, however it is likely to be a significant barrier to fish passage. Ravensbourne/Pool confluence weir bypass channel ravensbourne/pool confluence weir bypass channel No 10 London Thames Ravensbourne (Catford to Deptford) ravensbourne (catford to deptford) 100 - 1000 km² 132 100 - 200 m Ravensbourne (Catford to Deptford) GB106039023270 Fisheries 10 - 50 k€ GB106039023270 Ravensbourne (Catford to Deptford) 2012-01-01Z 2455927.5 2014-04-03T08:45:35Z 2456750.8649884 2017-06-05T11:01:57Z 2457909.9596875 Ravensbourne/Pool confluence weir bypass channel 500 1 plainlist 5 [[Category:Case study]] [[Project title::!Ravensbourne/Pool confluence weir bypass channel]] [[Subcatchment title::Ravensbourne (Catford to Deptford)]] Ravensbourne/Pool confluence weir bypass channel# QUERY94e32d362ed867f79e830a2e223e4a99