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<br />5.0 PRT~ENCE OF SIIBIRRIGATID CONDITIONS <br />Plant specimens from locations along Rapid Creek were identified by Richard <br />F. Harper, Ph.D. oP Harper/White Associates in Denver. Table 2 identifies <br />several phreatophytes present along Rapid Creek, indicating that <br />subirrigation is present. The extent of the subirrigatior. as indicated by <br />plant growth is shown on Plate I. Most all areas are or. steep sloping <br />stream banks, and extend less than 20 feet either side cf the creak. The <br />wide phreatophyte area associated with Terrace A supports mainly cottonwood <br />trees away from the creek. Other areas along the creek support only upland <br />vegetation, such as sage, where flood irrigation is rot exercised. <br />The water source for subirrigation is not Isnown. Perched ground water <br />C • immediately below the streambed could support this plant growth. Water <br />levels in the under],ying coal (see Section 4.0) are too deep for support of <br />subirrigation. <br />n <br />U <br />12 <br />Hydro-Searell, irlC. Reno • Denver • Austin corsu~nrvc f+roao~oasrs~ceo~oc~srs <br />