The bulk of the collection comprises minutes, agendas and meeting papers; some are bound with detailed indexes, but others are typescript papers. They relate to Board Meetings (RG/BM) and meetings of groups such as the Chaiman's Conference (RG/CC) and the Executive Committee (RG/CM/1/5) of the River Trent Catchment Board (which was set up at the outbreak of the Second World War to carry out the work of the Board during any period of national emergency or hostilities). Other committees include the Land Drainage, Finance and General Purposes, Water Resources, and River Pollution Prevention Committees.
There is also an incomplete series of published abstracts of accounts (RG/A) for the years 1940-1974, and a comprehensive series of published annual reports for 1931-1974, which give useful overviews of the work of the Board/Authority on various schemes relating to land drainage, water resources, fisheries and prevention of river pollution activities, along with photographs, maps, and summaries of data including rainfall (RG/R). See also the pocket sized yearbooks (RG/Y) which contain key facts and statistics.
Also present are the grants of arms (RG/G) to the River Trent Catchment Board (with artwork) made in 1936, and to the Trent River Authority, 1967.