7152

• UCREFRP Catalog Number: 7152
• Author: Holden, P. B.
• Title: Relationship between Flows in the Yampa River and Success of Rare Fish Populations in the Green River System.
• USFW Year: 1980.
• USFW - Doc Type: Logan, Utah.
• Copyright Material: NO

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Table 3. Mean monthly temperatures at the Jensen USGS gauge, 1962-1966.

1962 1963 1964 1965 1966
Jan. 0.0 0.0 0 0
Feb. 0.6 0 2.2
Mar. 6.1 1.7 3.9
Apr. 10.0 9.4 8.9 7.2 9.4
May 12.8 15.0 13.3 12.2 14.4
June 17.2 18.9 16.1 15.6 16.7
July 21. 1 22.2 18.9 19.4 20.0
Aug. 20.6 22.2 17.8 18.9 17.8
Sept. 17.2 18.9 15.0 13.9 14.4
Oct. 13.3 11.7 12.2
Nov. 6.7 5.5 8.3
Dec. 1.1 0.0 2.8

Utah State Univ., Logan) collected in Echo Park in 1967 as a continuation
of Vanicek's (1967) work. He found fairly large numbers (69) of young
squawfish, most of which were probably yearlings. Holden (1973) sam-
pled Echo Park from 1968-1971 and found juvenile squawfish, probably
either Age I or Age II fish in 1968, but only a few juveniles were found
in 1969, and none in 1970 and 1971. Seethaler, McAda and Wydoski (1976)
sampled portions of the Green and Yampa rivers in Dinosaur National