NR Colorado Department of Natural Resources

: Range-wide status of Rio Grande cutthroat trout, oncorhynchus clarki virginalis, 2008; John E. Alves, Kirk A. Patten, Daniel E. Brauch, Paul M. Jones., "April 2008.", Online resource; title from PDF cover (viewed March 2020)

: Rare-earth pegmatites of the South Platte district, Colorado; Includes bibliographical references (p. 88-92)., Description based on print version record.

: Raton Basin coal mine feature inventory; Cover title., "July 2001.", Mode of access: World Wide Web.

: Reclamation feasibility report, Henson Creek watershed; This report is intended to be a guidance document for use by the Lake Fork of the Gunnison Watershed Group (LFWG) in prioritizing and planning water quality reclamation projects at Mine sites in Henson Creek above the confluence with the Lake Fork of the Gunnison River. Investigation of the water quality of Henson Creek was initiated as part of the effort to improve the water quality in the Lake Fork of the Gunnison above Lake City. Henson Creek was targeted because previous investigations had shown that Palmetto Gulch was impacted by past mining, resulting in listing on the Clean Water Act 303(d) list of impaired waters for zinc and cadmium. In addition there was visual evidence of impairment in other portions of the Henson Creek Watershed., "Special thanks to the Lake Fork Watershed stakeholders.", "June 2006.", Includes bibliographical references (p. 71), Description based on online resource; title from PDF title page; (viewed November 2013)

: Reclamation feasibility report, Virginia Canyon; Cover title., "Funded through Regional Geographic Initiative.", "December 2001.", Includes bibliographical references (p. 71)

: Recommendations for safety appliances in mining; by Harry A. Lee., Cover title., "January 1896.", Print version record.

: Recommended buffer zones and seasonal restrictions for Colorado raptors; Tolerance limits to disturbance vary among as well as within raptor species. The term "disturbance" is ambiguous and experts disagree on what actually constitutes a disturbance. Although there are exceptions, the buffer areas and seasonal restrictions suggested here reflect an informed opinion that if implemented, should assure that the majority of individuals within a species will continue to occupy the area. Additional factors, such as intervening terrain, vegetation screens, and the cumulative impacts of activities should be considered, Includes bibliographic references (p. 5-7), Description based on online resource; title from PDF caption (viewed July 2014)

: Recommended buffer zones and seasonal restrictions for Colorado raptors, 2020; Tolerance limits to disturbance vary among as well as within raptor species. The term "disturbance" is ambiguous and experts disagree on what actually constitutes a disturbance. Although there are exceptions, the buffer areas and seasonal restrictions suggested here reflect an informed opinion that if implemented, should assure that the majority of individuals within a species will continue to occupy the area. Additional factors, such as intervening terrain, vegetation screens, and the cumulative impacts of activities should be considered., Includes bibliographical references (unnumbered pages 5-7)., Online resource; title from PDF caption (viewed October 2021)

: Recommended survey protocol and actions to protect nesting burrowing owls; Caption title., "March 2007.", Mode of access: World Wide Web.

: 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., Online resource; title from PDF cover (viewed March 2019)

: 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)

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