River restoration at Singler's Marsh
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- čas přidán 9. 12. 2013
- Hertfordshire Living Rivers Officer Charlie Bell takes you through HMWT's recent project to recreate areas of gravel riffle on the River Mimram at Singler's Marsh, Welwyn, Hertfordshire. 60 tonnes of silt was removed from the river bed and replaced with 60 tonnes of gravel!