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<br />OD1549 <br /> <br />CONTENTS <br /> <br />Metric conversion factors <br />Introduction. . . . . . . <br />Cooperating agencies. . . <br />Collection of water-resources data. <br />Surface-water data <br />Ground-water data. <br />Interpretive hydrologic investigations. <br />Statewide. . . <br />Regional <br />Missouri River basin <br />Arkansas River basin <br />Rio Grande basin. . <br />Colorado River basin <br />Multistate . . . . . <br />Reports published or released during fiscal year 1980 <br />Water-resources data reports . . . . . <br />Hater-resources interpret ive reports . .. <br />Projects completed during fiscal year 1980 except for report(s) <br /> <br />Page <br />V <br />1 <br />3 <br />5 <br />5 <br />7 <br />7 <br />11 <br />35 <br />47 <br />61 <br />77 <br />87 <br />117 <br />126 <br />128 <br />129 <br />131 <br /> <br />ILLUSTRATIONS <br /> <br />Plate 1. Map showing location of water-resources data-collection stations <br />in Colorado--October 1, 1980. . . . . . . . . . . . . In pocket <br /> <br />Page <br /> <br />Figures 1-41. 'Maps of Colorado showing the location of: <br />1. Major river basins and offices of the U.S. Geological <br />Survey's Colorado District. . . . . . . . . . . . . 2 <br />2. Area included in water-use inventory. . . . . . . .. 10 <br />3. Stations monitoring surface-water flow and qual ity in <br />coa l-m i n i ng areas . . . . . . . . . . . . . . . .. 12 <br />4. Stream reaches along which traveltime and reaeration <br />studies are being made in coal-producing areas. . 14 <br />5. Coal-mining areas where ground-water studies are in <br />prog resS. . . . . . . . . . . . . . . . . . 16 <br />6. Rainfall-runoff stations in small watersheds crossed <br />by State hi9hways . . . . . . . . 18 <br />7. Topographic quadrangles for which flood-prone areas <br />a re be i ng de linea ted. . . . . . . . . . . . 20 <br />8. Area for which flood hydrology of foothill streams is <br />being determined. . . . . . . . . . . . . . . . .. 22 <br />9. Colorado part of the Central Midwest Regional Aquifer <br />Study . . . . . . . . . . . . . . . . . . . . . " 24 <br />10. Stations selected for evaluation of the COMSAT General <br />pilot program and the station at which remote video <br />stream-gaging equipment is installed. . . . . . 26 <br />11. Surface-mining sites in sediment-chemistry study. .. 30 <br /> <br />III <br />