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. Two hundred thirty-three areas containing peat deposits were evaluated under the Program. A total of 49 deposits covering 12,952 acres and containing 22,683,000 short tone (dry weight) of peat in Piscataquis and Somerset Counties have been evaluated under the Maine Peat Resource Evaluation Program. These deposits range in size from 27 to 1344 acres and in estimated resources from 37,800 to 3,204,800 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 52. 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, 52 figures, 3 tables.