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<br />adult trout habitat for the reach from the dam to Texas Hole. The wetted area impact would have <br />a more direct affect on macroinvertebrate production and food source for the trout rather than <br />trout habitat itself. Based on the 20% threshold criteria established in this section, the 14% loss <br /> <br />or reduction in trout habitat appears that there WGi..dd not be :J. signifi~~'1t imp~ct to the trout <br />fishery in the quality water section. There may be an impact to adult habitat between the Dam <br />and Texas Hole and it should be noted that there may be opportunities to increase physical <br />habitat by structural modifications. <br /> <br />Page III-82, Line 2355 to the bottom of the page. there is a discussion of water quality and <br />stranding being intensively monitored during the summer low flow test. This section also states <br />that neither was assessed. There are speculations in this paragraph on changes that would be <br />detrimental but no data presented. The measured data presented in the low flow test shows no <br />significant impact due to stranding or to changes in water quality. The paragraph should <br />accurately reflect the data and not speculation as to what may occur. <br /> <br />Page [!I-83. Line 2373, in the discussion of nonnative tish, there is a judgment made that they <br />are not an ecologically important part of the ecosystem and also not overly abundant. Earlier <br />there was a statement that cattish and other nonnatives. carp in particular, were common within <br />this reach. These sections need to be consistent with the data presented. A data table showing <br />relative abundance of each species by river reach would clarify these sections. <br /> <br />Page III-85. line 2464. This paragraph begins with a discussion on trout. It should be noted that <br />this is a warm water reach of river and is not managed for a trout tishery. The way the section <br />reads now is that there is a degradation of water quality that limits trout in the reach of river <br />when in fact this river section is naturally warm water habitat and trout should not be assessed <br />within this reach of river. Any impacts to this section of river should be based on the warm <br />water species that would make up the fish assemblage in this section. <br /> <br />Comments on Navajo Reservoir Operations <br />Preliminary Draft Environmental Impact Statement <br />Miller Ecological Consultants, IDc <br /> <br />Page 4 <br /> <br />December 18, 200 I <br /> <br />00742 <br />