Montana State Library 19920205 map Helena, Montana Montana State Library The former name of this data set on the NRIS web site was "ab20" https://ftpgeoinfo.msl.mt.gov/Data/Spatial/NonMSDI/Collections/Clark_Fork_Superfund/ClarkFork24kPLSSCorner1989.zip http://mslapps.mt.gov/Geographic_Information/Data/DataList/datalist_Details.aspx?did={33b14155-3366-42a0-b50c-1e21d5224fe0} These data were formerly available from the Montana State Library web site but were removed because they are potentially out of date. Please contact the Federal Superfund Bureau of the Montana Department of Environmental Quality if you want these data so they may tell you if newer or better data are available. If the data are not available from the Department of Environmental Quality, you may request a copy from the Montana State Library data archive. Section Corners from USGS 1:24,000 scale Digital Line Graphs along the Clark Fork above Missoula, including Anaconda and Butte. The 44 quadrangles have been joined into a single data set, but not edgematched. The USGS major and minor codes have been replaced with the attributes shown below. 1961 1989 Publication Date -114.038002 -112.433403 47.0494995 45.8331985 -114.1364,47.0034,-114.1301,46.7491,-113.7366,46.6037,-113.1534,46.5999,-113.1319,45.9927,-112.9975,45.8738,-112.3458,45.8708,-112.3518,46.133,-112.6264,46.6236,-112.9849,46.8782,-113.749,47.0077,-114.1364,47.0034 ISO 19115 Topic Category planningCadastre Boundary Boundaries DLG Section Township Range Public Land Survey Montana Butte Missoula Anaconda Clark Fork None The Montana State Library provides this product/service for informational purposes only. The Library did not produce it for, nor is it suitable for legal, engineering, or surveying purposes. Consumers of this information should review or consult the primary data and information sources to ascertain the viability of the information for their purposes. The Library provides these data in good faith but does not represent or warrant its accuracy, adequacy, or completeness. In no event shall the Library be liable for any incorrect results or analysis; any direct, indirect, special, or consequential damages to any party; or any lost profits arising out of or in connection with the use or the inability to use the data or the services provided. The Library makes these data and services available as a convenience to the public, and for no other purpose. The Library reserves the right to change or revise published data and/or services at any time. Montana State Library mailing address

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Helena MT 59620-1800 406-444-5354 Montana Relay 711 406-444-0266 geoinfo@mt.gov Attributes were interpreted from the original DLG files by a computer program. Attribute accuracy is estimated to be 98.5 percent. Attribute accuracy was tested by one or more of the following methods: - manual comparison of the source with hard copy plots. - symbolized display of the digital line graph on an interactive compter graphic system. - Selected attributes that could not be visually verified on plots or on screen, were interactively queried and verified on screen. In addition, U.S. Geological Survey (USGS) Production System (PROSYS) software tested the attributes against a master set of valid attributes for the category; it also checked for selected valid attribute combinations, and for valid attributes relative to topology and dimensionality. All attribute data conform to the attribute codes current as of the date of digitizing. For Digital Revision Status = Not revised Data completeness reflects the content of the source quadrangle. Features may have been eliminated or generalized on the source graphic, due to scale and legibility constraints. For Digital Revision Status = Limited Update This file has undergone limited update digital revision. The file contains only (1) those features that are photoidentifiable on monoscopic source, supplemented with limited ancillary source, and (2) those features, present on the original source quadrangle, that can not be reliably photoidentified but that are not considered particularly prone to change. For Digital Revision Status = Standard Update This file has undergone standard update digital revision. The data completeness of this file meets National Mapping Division standards for feature content. Approximate accuracy is 12 meters, assuming the source maps meet National Map Accuracy Standards (NMAS). NMAS horizontal accuracy requires that at least 90 percent of points tested are within 0.02 inches of the true position. The digital data are estimated to contain a horizontal positional error of less than or equal to 0.003 inches standard error in the two component directions relative to the source quadrangle. Comparison to the graphic source is used as control to assess digital positional accuracy. Cartographic offsets may be present on the graphic source, due to scale and legibility constraints. Digital map elements require edge alignment between data sets. Data along each quadrangle edge are tested against the data set for the adjacent quadrangle using PROSYS; tests check for positional accuracy between data sets within a 0.02 inches tolerance. Features with like dimensionality, and with or without like attribution, that are within the tolerance are adjusted by moving the feature equally in both data sets. Features outside the tolerance are not moved. National Mapping Division U.S. Geological Survey 1989 map Reston, VA U.S. Geological Survey 24000 1961 1989 Publication Date Q7.5 The data set is a re-processed copy of this source. National Mapping Division U.S. Geological Survey 1978 map Reston, VA U.S. Geological Survey 24000 1964 1978 Publication Date q-a This is the source of the data for the Northeast Missoula, Northwest Missoula, Southeast Missoula, and Southwest Missoula quadrangles. National Mapping Division U.S. Geological Survey 1965 map Reston, VA U.S. Geological Survey 24000 1965 Publication Date q-b This is the source of the data in the Blue Point, Clinton, Mineral Ridge, Union Peak, Elevation Mountain, Wild Horse Parks, and Chimney Lakes quadrangles. National Mapping Division U.S. Geological Survey 1978 map Reston, VA U.S. Geological Survey 24000 1965 1978 Publication Date q-c This is the source of the data in the Bonner quadrangle. National Mapping Division U.S. Geological Survey 1989 map Reston, VA U.S. Geological Survey 24000 1989 Publication Date q-d This is the source of the data in the following quadrangles: 46113-66,65,64,63,62,61,51 46112-68,58,57,56,46,36,28,27 46112-26,18,17,16,15 45112-86,85 National Mapping Division U.S. Geological Survey 1976 map Reston, VA U.S. Geological Survey 24000 1967 1976 Publication Date q-e This is the source of the data in the Rock Cr Lake, Conleys Lake, Mount Powell, and Racetrack quadrangles. The quads were produced in 1967. In 1976 they were compared to aerial photos and deemed to still be current. National Mapping Division U.S. Geological Survey 1971 map Reston, VA U.S. Geological Survey 24000 1971 Publication Date q-f This is the souce of the data in the West Valley and Mount Haggin quadrangles. National Mapping Division U.S. Geological Survey 1985 map Reston, VA U.S. Geological Survey 24000 1985 Publication Date q-g This is the source of the data in the Elk Park Pass quadrangle. National Mapping Division U.S. Geological Survey 1961 map Reston, VA U.S. Geological Survey 24000 1961 Publication Date q-h This is the source of the data in the Dickie Peak and Burnt Mountain quadrangles. National Mapping Division U.S. Geological Survey 1978 map Reston, VA U.S. Geological Survey 24000 1963 1978 Publication Date q-i This is the source of the data in the Homestake quadrangle. Interpret USGS attributes, project quadrangles to Albers projection, and join quadrangles into one data set. Q7.5 19920205 fin Point Point 2713 State Plane Coordinate System 1983 2500 45 49 -109.5 44.25 600000.00000 0.00000 coordinate pair meters North American Datum of 1983 Geodetic Reference System 80 6378137 298.257 USPLS_N.PAT Point Attribute Table CODE Code for type of section corner 1 Section Corner 3 Closing Corner 4 Meander Corner 7 Witness Corner 12 Quarter-Section Corner 15 Arbitrary Section Corner COINC Code for coincident feature types A Hypsography AB Hypsography and Boundary B Boundary BA Hypsography and Boundary SURV Field Identification Status 0 Corner not identified in the field 1 Corner identified in the field Montana State Library mailing address

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Helena MT 59620-1800 1-406-444-5354 1-406-444-5354 geoinfo@mt.gov geoinfo@mt.gov Downloadable Data The Montana State Library provides this product/service for informational purposes only. The Library did not produce it for, nor is it suitable for legal, engineering, or surveying purposes. Consumers of this information should review or consult the primary data and information sources to ascertain the viability of the information for their purposes. The Library provides these data in good faith but does not represent or warrant its accuracy, adequacy, or completeness. In no event shall the Library be liable for any incorrect results or analysis; any direct, indirect, special, or consequential damages to any party; or any lost profits arising out of or in connection with the use or the inability to use the data or the services provided. The Library makes these data and services available as a convenience to the public, and for no other purpose. The Library reserves the right to change or revise published data and/or services at any time. 20140317 20130419 20040929 19961219 19920930 Montana State Library mailing address

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Helena MT 59620-1800 406-444-5354 geoinfo@mt.gov FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 {63486055-2E8D-49AE-A7E2-15951A876F98}