]> 2026-04-12T05:42:05+00:00 Case study:Dagenham Brook de-silting 500 en 1 Approved Removal of sediment Environment Agency Great Britain Environment Agency Flood and Coastal Risk Management Yes No Yes false No 51.576766967773,-0.040509890764952 Colin Environment Agency Street Removal of sediment,, ,,, 12686 Dagenham-Brook-Dredge-Land-Water-Case-Study.jpg 2009-01-01Z 2454832.5 Complete Reduce flood risk improve channel conveyancing, improve health and safety for light water course maintenance. Reduce flood risk and channel capacity, remove dangerous deep pockets of heavily contaminated silts. WFD driven. A 1.5km long ditch, which historically had been over dredged and subsequently not been maintained for years due to difficult access and inconsistent deep silt, required an over haul. It was anticipated that there was 4,400t of silt to be removed, half of which was expected to be hazardous Land and Water Services could see flaws in the historic silt test results and therefore undertook additional sampling and detailed testing which enabled the silt to be reclassified as 100% non-hazardous. Furthermore rather than dredging down to the previously over dredged hard bed level, Land & Water designed a solution which reduced the volume of silt to be removed, and therefore the cost of the works, but provided the Environment Agency with a firm and level bed for future access and maintenance (*1) Dagenham Brook de-silting dagenham brook de-silting No 2000 London Thames Lee (from Tottenham Locks to the Tideway) lee (from tottenham locks to the tideway) 1000 - 10000 km² 141 100 - 200 m Lee (from Tottenham Locks to the Tideway) GB106038077852 Flood risk management Habitat and biodiversity 100 - 500 k€ GB106038077852 Lee (from Tottenham Locks to the Tideway) 2009-01-01Z 2454832.5 2014-04-03T08:39:21Z 2456750.8606597 2018-11-01T12:43:43Z 2458424.0303588 Dagenham Brook de-silting 500 1 plainlist 5 [[Category:Case study]] [[Project title::!Dagenham Brook de-silting]] [[Subcatchment title::Lee (from Tottenham Locks to the Tideway)]] Dagenham Brook de-silting# QUERY03c11a127e84890f343f5832bfc98a4b