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• Vegetation <br />The drainages of Middle and Fish Creeks were surveyed for vegetation <br />type, density, and diversity. Both areas were similar in vegetation <br />patterns. A complete description of vegetation patterns is provided <br />under 2.04.10, and is summarized below. <br />Grasses and sedges give the site its characteristic appearance. Forbs <br />constitute 7.0% of the plant community. Nebraska sedge and other <br />unidentified species in the genera Carex contribute 82.2% of the <br />community while bluegrass, meadow foxtail, smooth brome, wiregrass and <br />timothy contribute the remaining 9.7%. Total cover is 30.7% and <br />production is 21.4 g/~,m2 (764 lbs./acre). A complete summary of the <br />vegetation information is presented in Table 14, Meadow Hay Vegetation <br />Type. <br />Historical Flood Irrigation <br />Flood irrigation it the proposed permit and adjacent area has occurred <br />• in the floodplains of lower Middle Creek and Fish Creek. The most <br />common method of ir:igation in the region is stream diversion through <br />gravity-fed ditches. <br />The capability of the intermittent and perennial streams in the <br />proposed permit and adjacent area to be flood irrigated is proven by <br />the existence and historical use of flood irrigation systems in the <br />intermittent and perennial stream floodplains. Specifically, the <br />Connel and Homestead Ditch systems, which derive their water from <br />Trout, Middle and Foidel Creeks, irrigate the Middle Creek floodplain. <br />The Boettler ditch derives water from Fish Creek upstream from the <br />proposed permit area and has been used to irrigate the Fish Creek <br />floodplain. <br />Sub-irrigation <br />Sub-irrigation is the process of supplying water to the root zone from <br />below through saturation in permeable soils, or capillary action in <br />n <br />U <br />2.06-15 <br />