Hoo Brook is blocked by a fallen tree, three hundred metres upstream along the section flowing down the northern edge of Hoo Brook Pasture. The tree fell last year, bridging the north and south banks of the brook. The River Stour water level is low at the moment, as is the brook flowing into it. The fallen tree, and other debris, has formed an effective dam. The difference in water levels, upstream and down stream of the dam, is around 600mm.
So, this natural dam is doing a good job of holding the brook water back close to Wilden Lane. Maybe a properly designed dam/weir, constructed from oak logs pinned to the brook bed, close to its confluence with the River Stour, is a practical and potentially acceptable means of increasing the minimum brook level to help with rewetting the Hoo brook pasture SSSI.
Since The Environment Agency’s policy is now to create cover and improved habitats for fish by pinning logs to river and brook beds, the creation of a log dam/weir might prove to be an acceptable way to proceed, subject to the necessary investigations, surveys and approvals.