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Table 7. Anecdotal accounts of native and non-native fishes in the Colorado River in Grand Canyon. Date Expedition (Diarist) Notes 1869 1872 1890 1896 1909 1911 1912 1923 J.w. Powell F.S. Dellenbaugh R.B. Stanton G. Flavell J. Stone E.Kolb Reilly (1999, p. 393) USGS 1923 1927 1936 1938 1940 Eddy (1999, p. 302) C. Eddy Reilly (1999, p. 393) N. Nevills N. Nevills (B. Goldwater) N. Nevills 1942 1942 N. Nevills (0. Marston) 1942 Reilly (1999, p. 419) 1942-1948 N. Nevills (G. Marston) 1947 N. Nevills 1947 Reilly (1999, p. 428) 1948 N. Nevills 1948 N. Nevills (J. Doerr) 1948 N. Nevills (0. Marston) 1949 N. Nevills (F. Wright) 1949 N. Nevills (P.T. Reilly) 1951 P. T. Reilly (S. Reilly) 1954 O. Marston 1955 P.T. Reilly 1956 P.T. Reilly 1959 P.T. Reilly No fishes noted. No fishes noted. Colorado pike minnow caught in Cataract Canyon, none noted in Grand Canyon. No fishes noted. No fishes noted. Caught 14-16 "salmon" (Colorado pikeminnow) downstream from Lava Falls. Jerry Johnson dynamites fish in the eddy downstream from the Paria Riffle. No sign of fish in Tapeats Creek. Kolb caught a "bony tail fish" near Mohawk Canyon. Despite regular fishing, no catfish were caught. Flagstaff residents dynamite fish below Paria Riffle after USGS trip departs. No fishes noted. Frank Dodge begins dynamiting fish at Lee's Ferry. Fishermen use river at Lee's Ferry. No fishes noted. "Large salmon (Colorado pikeminnow)" and catfish abound in Shinumo Creek. Catfish appeared to be spawning in Tapeats Creek. They caught catfish at Shinumo Creek. The trout in Tapeats Creek were 10-14 in., and catfish were jumping in the mouth of Havasu Creek. Small fish observed in Hermit Creek. No fish were observed in Shinumo Creek above the waterfall, but he caught 15 channel catfish, a 2 lb. "humpbacked sucker," and 2 Colorado pikeminnow below the waterfall. He caught 10 rainbow trout in Tapeats Creek. Catfish was observed 3/4 mile upstream in Diamond Creek. Near Gneiss Canyon Rapid, they caught "2 ft humpbacked suckers" with bare hands. The water was "alive with fish." Frank Dodge dynamited fish below Paria Riffle that "provided many a meal for Flagstaff citizens." Trout appeared to grow 1 in. per year in Tapeats Creek. i They caught catfish at Lava Creek. No trout were seen in Shinumo Creek, but 4 in. "suckers" and 2 in. "minnows" were observed 2.5 miles up Shinumo Crrek. A dozen trout were caught in Tapeats Creek. High sediment concentrations killed many fish in the Cplorado River at Lee's Ferry They caught 11 rainbow trout in Tapeats Creek. I Colorado pikeminnow 9 in. long caught in Tapeats Creek with 6 rainbow trout. Catfish were seen in Havasu Creek. Carp and catfish were observed under the waterfall nem( the mouth of Shinumo Creek. Catfish were observed in the mouth of Havasu Creek. I No fishes noted. Caught catfish at Elves Chasm and 12 in. trout in Tapeats Creek. ~ Two catfish were caught at Vaseys Paradise. . Rainbow trout caught in Tapeats Creek. Observed 2-3 in. fish in Nankoweap Creek and thought they were catfish. Shinumo Creek had 8 in. fish of an unknown species in its mouth. They caught trout in Tapeats Creek and saw 8 in. catfish in Diamond Creek 400 ft from the Colorado River. Bluegill and crappie were in Separation Creek in the mouth. They caught catfish at President Harding Rapid. Found rainbow trout on a rock at mile 38.5. These must have come from the Colorado River. 28 OBSERVATIONS OF ENVIRONMENTAL CHANGE IN GRAND CANYON