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. Calculations of synthesized river discharge versus habitat availability were made using field data and IFG-4 computer programs (Table 5 and Figure 13). Based upon these results, it was determined that maximum weighted useable area (WITA), expressed in ft2/lOOO f~ of linear stream at the White River study site is provided at 550 ft3/s (15.6 m3/s) discharge. Colorado squawfish are reproductively most . . active in June and July, consequently, these are the months when river . flows for spawning could be critical. During the period of record, 1964-1979 (USGS gauging station near Colorado-Utah state line), maximum WITA during June for squawfish spawning would have occurred in 1966 at 430 ft3/s (12.2 m3/s) and during July at 543 ft3/s (15.4 m3/s) in 1969 (Table 6). . Comparing results of 1982, physical habitat investigations with flow recommendations presented by the FWS (1982), spawning habitat should be . improved from normal conditions. Maximum WUA for Colorado squawfish spawning would be approached (within one percent) in average or wet water years. In dry years the FWS recommended flow of 375 ft3/s (10.6 m3/s) . would fall 17 percent below maximum, but remain greater than historical conditions. It should be recognized that Colorado squawfish spawning suitability . curves used in this analysis were constructed based upon northern squawfish spawning preference compared to available habitat conditions in the Yampa River (Prewitt et al. 1982, in Miller et al. 1982). The . applicability of using these data in this situation is questionable since they are neither species specific nor site specific to the White River. Interpretation of this analysis should be weighed cautiously and be . 33 .