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    • The survey of the Grand Canyon of the Colorado River in Arizona, 1923.

    • The survey of the Grand Canyon of the Colorado River in Arizona, 1923.

    • La Rue, Eugene C. (Eugene Clyde), b. 1879

    • Rapids--Colorado River (Colo.-Mexico); Boatmen--Colorado River (Colo.-Mexico); Boaters (Persons)--Colorado River (Colo.-Mexico); Colorado River (Colo.-Mexico)--Discovery and exploration; Colorado River (Colo.-Mexico)--Surveys; Grand Canyon...

    • This item records on film the USGS survey of the Colorado River from Lees Ferry, Arizona to Needles, California in 1923. The leader of the expedition was Col. C.H. Birdseye, Chief Topographic Engineer. The expedition also included the Kolb brothers...
    • Oral history interview with Georgie Clark (with transcript), November 6, 1991.

    • Oral history interview with Georgie Clark (with transcript), November 6, 1991.

    • Clark, Georgie White

    • Boatmen--Colorado River (Colo.-Mexico); White-water canoeing--Colorado River (Colo.-Mexico); Outdoor recreation--Colorado River (Colo.-Mexico); Women--Recreation--History; Grand Canyon (Ariz.)--Description and travel; Colorado River...

    • Oral interview with river running pioneer, Georgie Clark, describing her life history and adventures along the Colorado River. Includes discussion about the changing role of women in outdoor life. Length: 3:40:17.
    • Adoption of an interim 602(a) storage guideline: final environmental assessment

    • Adoption of an interim 602(a) storage guideline: final environmental assessment

    • United States. Bureau of Reclamation. Upper Colorado Region.

    • Water-storage--Environmental aspects--Colorado River (Colo.-Mexico); Water resources development--Colorado River (Colo.-Mexico); Reservoirs--Environmental aspects--Colorado River (Colo.-Mexico); Water transfer--Colorado River (Colo.-Mexico)

    • 107 pages (PDF version). File size: 4932.24 KB. The report considers adoption of a guideline to aid the Secretary of Interior in determining how much water should be reserved as storage in the Upper Colorado River basin. This would affect water...
    • Adoption of an interim 602(a) storage guideline: final environmental assessment

    • Adoption of an interim 602(a) storage guideline: final environmental assessment

    • United States. Bureau of Reclamation. Upper Colorado Region.

    • Water-storage--Environmental aspects--Colorado River (Colo.-Mexico); Water resources development--Colorado River (Colo.-Mexico); Reservoirs--Environmental aspects--Colorado River (Colo.-Mexico); Water transfer--Colorado River (Colo.-Mexico)

    • 107 pages (PDF version). File size: 4932.24 KB. The report considers adoption of a guideline to aid the Secretary of Interior in determining how much water should be reserved as storage in the Upper Colorado River basin. This would affect water...
    • Science plan for potential 2008 experimental high-flow at Glen Canyon Dam

    • Science plan for potential 2008 experimental high-flow at Glen Canyon Dam

    • Geological Survey (U.S.)

    • Rivers--Regulation--Environmental aspects--Colorado River (Colo.-Mexico); Flood control--Research--Colorado River (Colo.-Mexico); Sedimentation and deposition--Research--Colorado River (Colo.-Mexico); Freshwater ecology--Research--Colorado River...

    • 112 pages (PDF version). File size: 848.634 KB. The plan describes proposed monitoring and research activities to be conducted by the U.S. Geological Survey’s (USGS) Grand Canyon Monitoring and Research Center (GCMRC), if the Secretary of the...
    • Esmeralda: A Kodachrome Travelogue of Canyon Adventure, 1950.

    • Esmeralda: A Kodachrome Travelogue of Canyon Adventure, 1950.

    • Hudson, Edward

    • Boats and boating--Colorado River (Colo.-Mexico); Motorboats--Colorado River (Colo.-Mexico); Aircraft accidents--Arizona; Colorado River (Colo.-Mexico); Grand Canyon (Ariz.); Lees Ferry (Ariz.); Boulder City (Nev.)

    • The film documents a river trip launched from Lees Ferry in June of 1950. Primary participants included Edbert Hudson (father); Edward Hudson (son); Otis Marston; Bill Belknap; Willie Taylor; Joe Desloge, Sr.; and Guy Forcier. Two motorboats were...
    • Proposed experimental releases from Glen Canyon Dam and removal of non-native fish: environmental...

    • Proposed experimental releases from Glen Canyon Dam and removal of non-native fish: environmental assessment

    • United States. Bureau of Reclamation. Upper Colorado Region.

    • Floods--Colorado River (Colo.-Mexico); Sedimentation and deposition--Colorado River (Colo.-Mexico); Aquatic biology--Colorado River (Colo.-Mexico);

    • 157 pages (PDF version). File size: 1508.71 KB. "Three Department of the Interior agencies, The Bureau of Reclamation (Reclamation), National Park Service (NPS), and U.S. Geological Survey (USGS), are proposing a series of experimental releases...
    • Final biological opinion for the operation of Glen Canyon Dam

    • Final biological opinion for the operation of Glen Canyon Dam

    • U.S. Fish and Wlidlife Service

    • Floods--Colorado River (Colo.-Mexico); Sedimentation and deposition--Colorado River (Colo.-Mexico); Aquatic biology--Colorado River (Colo.-Mexico)

    • 88 pages (PDF version). File slze; 1159.4 KB. The consultation considered the impact of changing the dam's water flow on the local species of humpback chub (Gila cypha), the Kanab ambersnail (Oxyloma haydeni kanabensis), razorback sucker...
    • Rapid Days, 1948.

    • Rapid Days, 1948.

    • Hudson, Edward

    • Boats and boating--Colorado River (Colo.-Mexico); Motorboats--Colorado River (Colo.-Mexico); Colorado River (Colo.-Mexico); Grand Canyon (Ariz.)

    • At the beginning of the film, Ed Hudson provides the following commentary: 'The Colorado River has been conquered a number of times thru [sic] the Grand Canyon by rowboat at low river. It has never been traversed upstream by any type of craft....
    • Roaring Canyon, 1948-1949.

    • Roaring Canyon, 1948-1949.

    • Hudson, Edward

    • Boats and boating--Colorado River (Colo.-Mexico); Motorboats--Colorado River (Colo.-Mexico); Colorado River (Colo.-Mexico); Grand Canyon (Ariz.); Lees Ferry (Ariz.); Mead, Lake (Ariz. and Nev.)

    • This Colorado River trip commenced at Lees Ferry in June 1949. The crew members are identified as Edbert Hudson (father), skipper; Edward Hudson (son), deckhand; Willie Taylor, bailer; Bestor Robinson, cook; and Otis Marston, navigator. The boat...
    • The Doggerel Log of a Canyon Trip.

    • The Doggerel Log of a Canyon Trip.

    • Stark, J. T. (John Thomas), b. 1888.

    • Geological surveys--Arizona--Grand Canyon; Boatmen--Colorado River (Colo.-Mexico); Boats and boating--Colorado River (Colo.-Mexico); Colorado River (Colo.-Mexico)--Discovery and exploration; Grand Canyon (Ariz.)--Discovery and exploration

    • Handmade, hand-lettered and illustrated book of doggerel verse by John (Jack) Stark, commemorating the 1937 Carnegie-Cal Tech expedition. Stark dedicated the work to the expedition's boatmen, Frank Dodge, Owen Clark, and Merril Spencer, and to Buzz...
    • Oral history interview with Lois Jotter Cutter (includes transcript), September 1994.

    • Oral history interview with Lois Jotter Cutter (includes transcript), September 1994.

    • Cutter, Lois Jotter

    • Botany--Arizona--Grand Canyon; Riparian plants--Colorado River (Colo.-Mexico); Riparian plants--Arizona--Grand Canyon; Vegetation surveys--Arizona--Grand Canyon; Women botanists--Arizona--Grand Canyon; Grand Canyon (Ariz.); Grand Canyon...

    • Lois Jotter Cutter discusses her trip down the Colorado River in 1944 to collect data the flora of the Grand Canyon. Cutter describes the trip down the river with Norm Nevills and the physical features and rapids encountered along the trip....
    • Water quality investigation of seventeen Grand Canyon tributaries: July 2004 - May 2005

    • Water quality investigation of seventeen Grand Canyon tributaries: July 2004 - May 2005

    • Arizona. Dept. of Environmental Quality. Water Quality Division.

    • Water quality--Colorado River Watershed (Colo. - Mexico); Water quality--Grand Canyon (Ariz.); Water quality--Colorado River (Colo.- Mexico); Grand Canyon National Park (Ariz.);

    • 92 pages (PDF version). File size: 1347.462 KB. Prepared by Division of Water, Surface Water Section, Monitoring Unit. Lin Lawson, Editor. Publication Number OFR-07-04.

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