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<br />3 <br /> <br />volume for incorporation by USSR personnel within the model. <br />Data were collected for rainbow trout (~almo gairdneri) and <br />cutthroat trout (Salmo clarki). Data were collected by species, <br />life stage (juvenile and adult), and physical activity of the <br />fish for two seasons: winter (January - early April) and summer <br />(June - early September). In addition, data were stratified for <br />three flow levels: low (800 - 1500 cfs) [22.6 - 42.5 m3jsecJ, <br />medium (2000 - 2800 cfs) [56.6 - 79.3 m3jsec] and high (3600 <br />4300 cfs) [101.9 - 121.8 m3Jsec]. Flow rel eases between these <br />defined ranges seldom, if ever, occurred. <br /> <br />Invertebrate and vegetati ve data <br /> <br />A secoDd objective of the study was to quantitatively cal- <br />l ect aqua tic invertebrate sampl es from di fferent substra tes. A <br />third objective was to provide infonnation to USBR personnel on <br />aquatic vegetation and substrate type for mapping and modeling <br />purposes. The overall purpose of these two objectives was to <br />provide so~e initial infonnation on potential food sources for <br />the trout fishery. <br />Both the invertebrate and vegetative data were forwarded to <br />USSR personnel for analysi s and incorporation into the aquatic <br />models since our primary responsibility was to collect the data. <br />Some of the summarized findings are presented in this report, <br />however. <br /> <br />."'~I~~~~""""'-" <br /> <br />- <br />