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PROJECT SETTING <br />Location and Size <br />The Holbrook Lake Ditch Watershed is located in northeastern Otero County in <br />southeastern Colorado. The watershed consists of 28,000 acres of which 16,000 <br />acres is irrigated. The area averages 2 miles wide and 16 miles long. Cheraw, <br />Colorado (Pop. 265) is toward the east edge and La Junta is just south of the <br />watershed. Pueblo, Colorado is 40 miles west of the watershed area. <br />The watershed is bounded on the west by the Holbrook Canal from the point of its <br />diversion on the Arkansas River, south by the Arkansas River, Jackson and Reservoir <br />Canals, Northeast by Horse Creek and the Bent county line, and on the East by the <br />irrigated cropland boundary northeast of Swink. It includes the Holbrook Reservoir, <br />Manby Lake, Taylor Lake, and Cheraw Lake.. <br />Topography and Drainage <br />The highest elevation in the watershed is the Holbrook Canal takeout with an <br />elevation of 4200 ft. on the west edge to 4100 ft. on the east edge of the county line. <br />The entire watershed area is gently sloping as it drains toward the east to Horse <br />Creek which outlets into the Arkansas River. John Martin Reservoir is approximately <br />20 miles downstream of our watershed. John Martin Reservoir is used for flood <br />control, recreation, and irrigation storage. <br />21 <br />