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<br />
<br />112
<br />
<br />CALIFORNIA FISH AND GAME
<br />
<br />The cooperation of the Arizona Game and Fish Commission, espe-
<br />cially that of Messrs, K. C. Kartchner, former State Game Warden.
<br />H, L. Reid, Director of Fisheries, and :Mervin Smith, Yuma CourtV'
<br />Deputy, is appreciated. . .
<br />Mr, Geno A. Amundson, Refuge Manager of the United States Fish
<br />and Wildlife Service's Imperial N. W, Refuge, and members of his staff.
<br />especially :Mr. Thomas E. Rochester, 'have been most helpful. 1I1r,
<br />Walter P. Schaefer, Superintendent of the Havasu Lake N, W, Refn!:!!'.
<br />has furnished data on Lake Havasu. .
<br />Much detailed information on the dams and diversions and the
<br />physical aspects of the river has been contributed by members of the
<br />:~...::-=-' HnitedStates Bureau {}fRedamation.., . Sincere thanks are extended to
<br />Messrs. Ernest A, Moritz, Regional Director, and R. G. M:a~bonald of
<br />the Boulder Canyon Project at Boulder City, Nevada; S, A, MeWilliams
<br />and Boyd E. Coffey at Parker Dam; Leo .J. Foster and John K. Rohrer
<br />of the All-American Canal and Gila Project at Yuma, Arizona; C, B. '
<br />Elliott, W. A. Boettcher, and Daniel Martinez of the Yuma Project at
<br />Yuma..
<br />The United States Geological Survey has, through' Mr. John H.
<br />Gardiner, Dk-1:rict Engineer at Tucson, Arizona, taken water tempera.
<br />tures for us, and contributed other physical data. Thanks are also .:In\'
<br />to other members of the Survey: Messrs, W. L. Heckler of Tucson; Fr\'d
<br />S. Anderson of Boulder City; R. L, Blake and Sherman O. Decker of
<br />Phoenix, Arizona; Martin D. Dykers, Yuma; C. S, Howard, Albu-
<br />querque.
<br />Mr. C. p, Maboney, Manager, Palo Verde Irrigation District, and
<br />other members of his staft', and Mr. Arch Griffin, Director of tbe Korth
<br />Gila Irrigation District, have furnished information, Special thanks
<br />are due Mr, Mahoney for securing water temperature records 11ear
<br />Blvthe.
<br />. Data on the Headgate Rock Dam was furnished by Mr. R II,
<br />Rupkey, Senior Engineer. Colorado River Indian Reservation Pro,jl'd.
<br />Visits to the lower portion of the Colorado River Aqueduct wpre
<br />made possible by :JIr. Julian Hinds, General ~Ianager and Chief Engin\'t'f
<br />of the ~1etropolitan Water District of Southern California, and \1\'
<br />~lr. R. F, Stringfellow, Chief SpE'cial Agent. of the District.
<br />:\11', .James H, Gordon. Meteorologist of the United States Wt'ather
<br />Bureau at Yuma, furnished data on the climate of the lower basin. )11',
<br />L, V. Wilcox, Agronomist of the United States Bureau of Plant Tn(lll~'
<br />try's Rubidoux Laboratory at Rh.erside, California, bas furnished
<br />chemical analyses of Colorado River water.
<br />Two of the bullheads collected were identified by Dt'. Carl L, Ihbbs
<br />of the University of Michigan, and Dr. Robert L, Miller has contribnted
<br />notes on some of the fishes. Some information on fishes supplied by
<br />several other individuals will be used in a later paper, and my debt to
<br />them will be acknowledged there. Mr. L, M. Klauber of San Diego has
<br />furnished notes.
<br />A siycere debt of appreciation is due to members of the Yuma Valley
<br />Rod and Gun Club, Blythe Chapter of the Izaak Walton League, and
<br />Needles Boat Club, and to the many fishermen and other residents encoun-
<br />tered during the field-work. It would be difficult to thank all of theIIl
<br />individually, and the names of many are unknown.
<br />
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