Active/Archival Records
Brief Description from the Metadata Abstract

COAST depicts Maine's coastline at mean high water, based on USGS 1:24,000 scale quadrangles. Some New Hampshire and New Brunswick coastlines are also included.

COAST_04202006

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CONTOURS contains contour lines for Maine from USGS 1:24,000 scale quadrangles; in accordance with the source, units may be in feet or meters and intervals may be at 10 to 20 feet, or 3 meters. Additional supplementary contours exist on some of the quads.

CONTOURS_05222006

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E911RDS contains updated road centerline and road name data for Maine at 1:24,000 scale. E911RDS digital roads were developed, and are maintained, to serve the Enhanced 911 project in Maine.

E911RDS_01062006

E911RDS_07032006

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HYDRO maps Maine lakes, ponds, rivers, perennial and intermittent streams, and coastline at 1:100,000 scale. Data for this coverage were compiled from USGS 1:100,000 scale digital line graph (DLG) files by J.W.Sewall Co. for the Maine Low-Level Radioactive Waste Authority in 1989. The USGS major/minor coding scheme is used in the coverage. Maine's 3-mile marine jurisdiction limit was added by MEGIS staff in 1992 to close the coastal water polygon for shading purposes. Codes have also been added to identify tidal rivers in Maine and Maine Department of Environmental Protection Water Quality Classes. In addition, IF&W's MIDAS (Maine Information Display and Analysis System) lake codes have been added for lakes greater than 10 acres. Data for HYDRO were compiled from USGS 1:100,000 scale DLG files by J.W.Sewall Co. for the Maine Low-Level Radioactive Waste Authority in 1989. Codes have been added to identify tidal rivers; water quality classification and related records by MIDAS number, a unique four digit identification code for lakes.

HYDRO_04202006

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METWP24 depicts political boundaries, common town names, and geocodes for Maine at 1:24,000 scale. The coverage was created from USGS, 7.5 minute map series, town boundaries.

METWP24_06302005

METWP24_06302006

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NWI contains USFW National Wetland Inventory polygon data for Maine at 1:24,000 scale, classified using the Cowardin system. NWI data are compiled from color infrared aerial photography and are digitized onto 1:24000 scale base maps by the U.S. Fish and Wildlife Service in St. Petersburg, FL.

NWI_05222006

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PONDS contains pond and lake features in Maine from USGS 1:24,000 scale quadrangles. Data for this coverage were digitized from USGS 1:24,000 scale quadrangle maps by various contractors, beginning in 1948.

PONDS_04192006

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RIVERS depicts double line river features in Maine from USGS 1:24,000 scale quadrangles. Some New Hampshire and New Brunswick features are also included. Codes are included to select river island polygons. Note that tidal portions of rivers are located in the COAST coverage.

RIVERS_04202006

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STREAMS depicts single line streams of Maine from USGS 1:24,000 scale quadrangles. Some New Hampshire and New Brunswick features are also included. Data for this coverage were digitized from USGS 1:24,000 scale quadrangle maps by various contractors. Arcs are coded for perennial and intermittent stream types.

STREAMS_04202006

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SURF contains statewide surficial geology map units for Maine at 1:250,000 scale. The Maine Geological Survey (MGS) developed the dataset which maps surficial geology map units from their Regional Surficial Geology maps published in 1987. The data for this coverage were digitized and coded from 1:250,000 scale mylars by the J.W. Sewall Co., in 1990, for the Maine Low-Level Radioactive Waste Authority. Some coding and edgematching errors exist.

SURF_05222006