Another good example from London, is the River Wandle restoration projects which have shown considerable success so far and are still ongoing. Before the project started, it was classed as the "hardest working chalk stream of its size in the world", but due to the project was restored to "Good Ecological Potential" status by 2015. https://restorerivers.eu/wiki/index.php?title=Case_study%3ARiver_Wandle_Restoration_Project. One of the measures used was the incorporation of Downstream Defender advanced vortex separators which were shown to reduce the sediment from road runoff by half in a very built up area at Carshalton when flows were in the design operating range of the units. http://www.hydro-int.com/en-gb/products/downstream-defender-0
Published by Mark Goodger, Hydro International - Product Engineer
Another good example from London, is the River Wandle restoration projects which have shown considerable success so far and are still ongoing. Before the project started, it was classed as the "hardest working chalk stream of its size in the world", but due to the project was restored to "Good Ecological Potential" status by 2015. https://restorerivers.eu/wiki/index.php?title=Case_study%3ARiver_Wandle_Restoration_Project.
One of the measures used was the incorporation of Downstream Defender advanced vortex separators which were shown to reduce the sediment from road runoff by half in a very built up area at Carshalton when flows were in the design operating range of the units. http://www.hydro-int.com/en-gb/products/downstream-defender-0