Cod Beck has a long history of flooding Thirsk and a feasibility study completed in April 2005 recommended additional flood defences and upstream storage. In 2011, a proposed flood defence scheme in Thirsk was cancelled due to the Environment Agency having its budget cut by 41%.[2]
The name Cod Beck is a derivative of Cold Beck,[3] where beck is smaller than a river; the stream runs deep between banks, so is always fairly cool. Cod fish are not found in fresh water.