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discharge levels, water chemistry, fish populations, and benthos in the same streams and the North Fork and "main" White River. Electrofishing on the South Fork and Sweetwater Creek disclosed "no change in species composition" since his 1964 report. Rainbow trout were predominant (cutthroat were common and some brook trout present) in the upper North Fork. Whitefish made up most of the catch from the middle and lower North Fork stations (one rainbow trout was taken in the middle section). Sculpins were also collected at all North Fork stations. In the White River, which was said to be very difficult to sample by electrofishing because of its depth and width, only "suckers" were collected. In bottom samples from the North and South Forks, mayflies, stoneflies and true flies dominated numbers and volume. Hill and Burkhard (1967) expanded on the South Fork and Sweetwater Creek data and estimated optimum stream flows at sampling stations. May's (1970) thesis on the biotia and chemistry of Piceance Creek in- eluded reference to samples collected in 1968 and 1969 a three stations on the White River near the mouth of Piceance Creek within our study area; Everhart and May (1973) summarized the same data. Water temperature, discharge, specific conductance, dissolved oxygen, total alkalinity, pH, filterable so]ids, major cations and anions, trace elements, and benthic invertebrates were determined at each station. Fish species diversity of the White River was slightly higher than that of Piceance Creek. Flannel mouth sucker, mountain sucker (Catostomus platyrhynchus),mottled sculpin (Cottus bairdi), roundtail chub (Gila robusta), black bullhead (Ictaiurus melas), channel catfish, red shiner (Notropis_ lutrensis), Colorado squawfish (Ptychocheilus Lucius), speckled dace, brown trout, and rainbow trout were collected from the White River. Everhart and May (1973) reported Gila elegans (which now refers to the bonytail) instead 5