In July 1979, the Maine Office of Energy Resources, in conjunction with the Maine Geological Survey, began the Maine Peat Resource Evaluation Program. The Program, which was funded by the US Department of Energy (DOE), was undertaken to determine the amount and location of fuel-grade peat in Maine. Similar DOE/State Peat Resource Evaluation Programs are also being carried out in thirteen other states, including Alaska, Michigan, Minnesota, North Carolina, and South Carolina, whose programs began in 1979. Two hundred thirty-three areas containing peat deposits were evaluated under the Program. A total of 48 deposits covering 14,988 acres and containing 32,114,800 short tons (dry weight) of peat in Washington County have been evaluated under the Maine Peat Resource Evaluation Program. These deposits range in size from 40 to 2645 acres and in estimated resources from 40,000 to 6,953,000 short tons. Maps of individual deposits showing the distribution and depth of peat, core sites, and the surficial geology of the area adjacent to the deposits are shown in Figures 4 to 50. Cores showing the vertical distribution of peat and sediment as well as sample locations, and the results of laboratory analyses are also included. 22 references, 50 figures, 3 tables.