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<br />Flood Control <br /> <br /> <br />Alamo Dam and l..ake <br /> <br />Lake Mead is the only reservoir on the <br />Colorado River in which a specified space <br />\s exclusive\y allocated for mainstream <br />flood control. Flood control regulations. <br />for Hoover Dam are being updated and <br />revised by the Water and Power Re- <br />sources Service and the Army Corps of <br />Engineers with the consultation and <br />advice of State and local interests. <br /> <br />A draft report has been prepared and is <br />in the review process. After the review <br />process has been completed. a final <br />report and revised regulations will be <br />published, <br /> <br />An interim agreement on flood control <br />regulations prior to publication of the <br />revised regulations is now in effect which <br />takes rnto account the available effective <br />space in CRSP reservoirs as well as In <br />La~e Mead, <br /> <br /> <br />Wa1er1all on lak.e Fork. Ri....er <br /> <br />Extensive flood control protection was <br />provided by the reservoirs within the <br />Basin during water year 1980. Several <br />storm systems swept across the water- <br />shed and saturated wide areas wit" <br />damaging rains. Total Colorado River <br />reservoir system storage at the start of <br />water year 1980 was approximately 50,9 <br />million acre-feet and about 54.5 million <br />acre~feet at the end of the water year, <br />representing a 3.6 million acre-feet de- <br />crease in total remaining available reser- <br />voir space. <br /> <br />In addition to the mainstream structures, <br />Alamcf Dam on -th~e BilrWilliams RIVer, <br />and Painted Rock Dam on the Gila River <br />(both in the Lower. Basin) received <br />unusually large amounts of flood inflow <br />during the winter months. Painted Rock <br />and Alamo Reservoirs are scheduled to <br />be operated at minimum flood control <br />levels during 1981, <br /> <br />~ <br /> <br />Flood control storage space will be main- <br />tained in Lake Mead as stipulated in the <br />new interim agreement between the <br />Water and Power Resources Service and <br />the U,S, Army Corps of Engineers, <br /> <br />25 <br />