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WSP08519
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Last modified
1/26/2010 2:48:32 PM
Creation date
10/12/2006 3:01:58 AM
Metadata
Fields
Template:
Water Supply Protection
File Number
8281.300
Description
Colorado River Studies and Investigations - Colorado River Consumptive Uses and Losses Report
Basin
Colorado Mainstem
Water Division
5
Date
6/1/1991
Title
Colorado River System Consumptive Uses and Losses Report 1981 - 1985
Water Supply Pro - Doc Type
Report/Study
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<br />6 <br /> <br /><-:=J <br /> <br />of Utah and the northwestern corner of <br />ArizoO:a and empties into the northern <br />extremity of the Overton Arm of Lake <br />Mead in Nevada. The selecteli outflow <br />point is the long-term USGS gauging <br />station; at Littlefield, Arizona, which is <br />, about 36 miles upstream from Lake <br />Mead and about 10 miles above the <br />Arizon~.Nevada State line. The river is <br />fed chi~fly from tributaries heading in <br />the so~them high plateaus ansl <br />mountllins in Utah. Several springs <br />contribute water to the river at a <br />relatively uniform rate. The two most <br />significant of these springs are located <br />near LaVerkin, Utah, and Littlefield, <br />Arizona, and both are highly saline. <br />Agricultural and municipal develop- <br />ments i'o Nevada below the selected <br />outflow:point are included in "remaining <br />areas," as shown on the frontispiece <br />map. <br /> <br />("j <br /> <br />w <br />.... <br />(0 <br />~ <br /> <br />The mlVor irrigated areas are located in <br />the LaVerkin-Hurricane-St. George- <br />Santa Clara areas of Washington <br />County,Utah, and in the Littlefield area <br />of Mohave County, Arizona. Small <br />irrigated ar~as are scattered throughout, <br />Irrigateqlands were estimated to <br />average ,approximately 25,000 acres. <br />Ground water has been developed to a <br />limited degree, Population is predom- <br />inately rural with St. George, Utah, <br />heing the principal city in the basin, <br /> <br />Muddy;Rlver, <br />Nevada <br /> <br />The Mudpy River, a tributary of the <br />Virgin R~ver prior to the existence of <br />Lake MeM, originates from warm <br />springs ~ northern Clark County, <br />Nevada, about 10 miles northwest of <br />Glendale. The river flows southeasterly <br /> <br />for about 30 miles and terminates at the <br />northwestern extremity of the Overton <br />Arm of Lake Mead near Overton, <br />Nevada. Meadow Valley Wash, the <br />mlijor tributary of Muddy River, <br />originates in northeastern Lincoln <br />County and flows south to join the <br />parent stream at Glendale. The <br />USGS gauging station near Glendale is <br />about 2.4 miles downstream from . <br />Meadow Valley Wash. Outflow varies <br />little from year to year. Meadow Valley <br />Wash, although perennial in the vicinity <br />of Caliente, is normally dry in the <br />last 50-mile reach above Glendale. <br />Irrigated lands averaged approximately <br />10,800 acres. The entire basin is <br />sparsely populated. <br /> <br />Bill Williams RIver, <br />ArIzona <br /> <br />The Bill Williams River is formed by the <br />mergence of the Big Sandy and Santa <br />Maria Rivers about 7.5 miles above <br />Alamo Dam. The river above Alamo <br />Dam drains an area of about <br />4,700 square miles from small, rough <br />mountain ranges and intervening <br />valleys in parts of Mohave, La Paz, and <br />Yavapai Counties. Alamo Dam and <br />Reservoir, primarily a flood control <br />structure completed in 1968, was built <br />to protect downstream development <br />along the Colorado River. A minimum <br />pool is maintained for recreation and <br />game management purposes. Releases <br />up to a maximum of 2,000 ft% from the <br />allocated conservation pool above the <br />minimum pool are coordinated with <br />releases from main stem reservoirs. <br />Releases from Alamo Dam and runoff <br />from the intervening area flow westerly <br />and enter at the lower end of Lake <br />Havasu just above Parker Dam. <br />
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