 This continued with the renaming of the Trent River Catchment Board to the Trent River Board, and then the Trent River Authority, which finally became part of the Severn Trent Water Authority in 1974.In an unusual move, the Corporation of the Level of Hatfield Chase was re-constituted in 1987, by an order of the Ministry of Agriculture, Fisheries and Food.The order cited the powers of the 1813 and 1862 Acts, and transferred the property and responsibilities for drainage of the area from Severn Trent to the Corporation.