Thank you to HKD Transition for restoring the debris dams in Lag Wood – and creating a few more! Debris dams are made from fallen small trees and branches and sometimes any other natural materials that come to hand. They are simple to make and are held in position by a few stakes in the stream bed. They are designed to slow down the flow of water in the upper part of river catchments to prevent sudden flooding downstream at times of very heavy rainfall. For most of the year they let water flow freely.
Debris dams can have many ecological benefits, they increase the variety of aquatic and semi-aquatic habitats and can improve biodiversity as a result. They have very few adverse impacts because they mimic what happens naturally in woodland streams. We now have six of them in the wood; three in the stream bed and three along several of our old drainage ditches.
For more on HKD Transition please see https://www.hkdtransition.org.uk/