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• <br />THE NATIIRAL ENVIRONMENT <br />The region under consideration is approximately 1,000 acres <br />located east and north of Lyons, Colorado and west of Longmont, <br />Colorado. The area is known historically and at the present time <br />as "Dove Flats." Rabbit Mountain borders the study area on the <br />west, oa the north the St. Vrain Creek is the border and Indian <br />Mountain borders the east. The Flats are actually rolling to flat <br />with an elevation of approximately 5200 feet at the southeast <br />corner to 5500 feet at the northern border. <br />several water courses cross the Dowe Flats area including four <br />irrigation features. The St. Vrain Supply Canal, the Highland <br />Ditch, the Rough and Ready Ditch and the Palmerton Ditch provide <br />water and cross the Flats in a generally west to east direction. <br />Several springs are located near Rabbit Mountain. <br />A north/south ridge of limestone crosses the Flats near the <br />major north/south access road, North 55th Street. In addition to <br />serving as a topographic guide, the limestone flat also provides a <br />• clear indication of the soil quality in that area. <br />The vegetation is primarily cultivated lands and pasture. <br />Natural grasslands and shrubs surround the cultivate regions at the <br />margins of the Study Area. South of the major part of the Study <br />Area is a riparian zone along the irrigation ditches south to <br />beyond St. Vrain Creek. The proposed transportation corridor(s) <br />cross the riparian zone. <br />• <br />9 <br />