• Catalog Record

    Polk County, Iowa : 1:100 000-scale topographic map / Catalog Record Only

    Relief shown by contours and spot heights. "Compiled from USGS 1:24 000-scale topographic maps dated 1956-1976 ... Planimetry revised from aerial photographs taken 1983 ... Map edited 1986." Alternate title: Polk Co., Iowa. Includes location map/sheet index, index to topographic maps, location map, and meters/feet conversion table. "41093-E5-CF-100." 1 map : col. ; 47 x 44 cm., folded to 21 x 11 cm.

    • Contributor: Geological Survey (U.S.)
    • Original Format: Maps
    • Date: 1986
  • Catalog Record

    Polk County, IA DOQ, digital orthophoto quadrangle data : FIPS code 19153 : US GEODATA / Catalog Record Only

    System requirements: An 80386 IBM compatible computer with MS-DOS version 3.1 or later, and 640K of RAM, and a CD-ROM reader using Microsoft Extensions, version 2.0 or later. Relief shown by contours and spot heights. Title from disc label. Shipping list no.: 94-0011-E. "Mastered 2/94." "Monochrome 1-meter pixels"--Container insert. "ISO 9660, JPEG compressed data." 1 computer laser optical disc ; 4 3/4 in.

    • Contributor: Geological Survey (U.S.)
    • Original Format: Maps
    • Date: 1994