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DaveDCB
Well-known member
I carry loads of test bungs and bung the runs and fill with water if I know it will rain.
To be honest this one caught me out, it’s well upstream with plenty of run off in the lower trench but it must have come down really bad last night for it to fill it up! All replaced with a 150mm… and back filled, BCO can find a shovel if he wants a closer look at anything