NR Colorado Department of Natural Resources

: Recommended survey protocol and actions to protect nesting burrowing owls when conducting prairie dog control; Western Burrowing Owls (Athene cunicularia hypugaea) are commonly found in prairie dog towns throughout Colorado. Federal and state laws prohibit the harming or killing of burrowing owls and the destruction of active nests. It is quite possible to inadvertently kill burrowing owls during prairie dog poisoning projects or removal of prairie dogs. The following guidelines are intended as advice on how to determine if burrowing owls are present in a prairie dog town, and what to do if burrowing owls are detected., Description based on online resource; title from PDF caption; (viewed July 2014)

: Reconnaissance engineering geology report for Planning District 9, State of Colorado; Includes bibliographical references (p. viii-xiv)., Description based on print version record.

: Reconnaissance engineering geology report for Planning District l, State of Colorado; prepared for the Colorado Geological Survey and the Colorado Division of Planning [by F.M. Fox & Associates]., Bibliography: pages viii-ix., "This document was financed, in part, through an urban planning grant from the Department of Housing and Urban Development.", Print version record.

: Reconnaissance engineering geology report for planning districts 7 & 13 State of Colorado; Description based on print version record.

: Reconnaissance field investigation of surface-water specific conductance in the Snowmass-Glenwood Springs area, west-central Colorado; by Robert M. Kirkham, Jonathan M. Zook, and Matthew A. Sares., Map on folded leaf in pocket., Bibliography: page 21., Print version record.

: Reconnaissance report surface and subsurface flooding for the town of San Luis, Colorado; prepared by Colorado Water Conservation Board ; by Robert L. Kistner., "August 20, 1987.", "430E", Online resource; title from PDF title page (viewed July 2020)

: Reconnaissance study of coal fires in inactive Colorado coal mines; Includes bibliographical references (p. 56-60)., Description based on print version record.

: Reconstitution of 1979 flood peaks, North Clear Creek, Gregory Gulch, and Chase Gulch; prepared for Colorado Water Conservation Board ; prepared by Love & Associates, Inc., "April 26, 2001.", Bibliography: page 15., Job No. 0107A, Online resource; title from PDF cover (viewed September 2016)

: Records and logs of selected wells and test holes, and chemical analyses of ground water, Yuma County, Colorado; Description based on print version record.

: Red Feather-Poudre Canyon deer herd management plan data analysis unit D-4, game management units 7, 8, 9, 19, 191; prepared by Mark Vieira & Angelique Curtis., Online resource; title from PDF cover (viewed January 2022)

: Red Feather-Poudre Canyon deer herd management plan data analysis unit D-4, game management units 7, 8, 9, 19, 191; prepared by Mark Vieira., Online resource; title from PDF cover (viewed March 2019)

: Redbelly dace : assessing habitat quality for priority wildlife species in Colorado wetlands; Online resource; title from PDF cover (viewed October 2021)

: Regional deer-vehicle accident research : final report; Dale F. Reed, Thomas N. Woodard, Thomas D.I. Beck ; State of Colorado, Division of Wildlife ; prepared in cooperation with the U.S. Department of Transportation, Federal Highway Administration., "November 1979.", Includes bibliographical references., FHWA-CO-RD-79-11., Print version record.

: Regulation of geothermal energy development in Colorado; "Prepared for U.S. Department of Energy Division of Geothermal Energy under Contract No., Includes bibliographical references (p. 20-21)., Description based on print version record.

: Regulation of geothermal energy development in Colorado; Caption title: Colorado geothermal institutional handbook: a user's guide of agencies, regulations, permits and aids for geothermal development., "Date published May, 1980.", "DOE/ID/12018-3.", "Prepared for U.S. Department of Energy, Division of Geothermal Energy, under contract no. DE-FC07-79ID12018.", Includes bibliographical references., Mode of access: World Wide Web.

: Regulations relative to the construction, equipment and operation of metalliferous mines, mills and metallurgical plants, recommendations and mineral production for 1905; Print version record.

: Regulatory analysis of the proposed revisions to the mineral rules and regulations of the Colorado Mined Land Reclamation Board for hard rock, metal and designated mining operations; This analysis addresses each of the proposed amendments and rules and provides information on affected classes, qualitative and quantitative impacts, the probable costs, a comparison of the probable costs and benefits, whether less costly or less intrusive methods exist for achieving the purpose of the proposed rule, and whether there are alternatives to the proposed rule., "April 9, 2010.", Description based on online resource; title from PDF cover (viewed September 2010)

: Renibacterium salmoninarum transmission research : transmission of renibacterium salmoninarum (bacterial kidney disease) in hatchery-reared fish; Online resource; title from PDF caption (viewed February 2020)

: Report of September 2013 Little Thompson River flooding and Big Elk Meadows dam failures; by Colorado Division of Water Resources, Dam Safety Branch., "June 2014 (Revised, December 2014)", Includes bibliographical references., Online resource; title from PDF cover (viewed June 2018)

: Report of data pertinent to Lake San Cristobal; authored by James G. Norfleet., "October 23, 1991.", Bibliography: page [7], Description based on online resource; title from PDF cover; (viewed June 2015)

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