WSP01350 - Laserfiche WebLink

Home Browse Search

13 'I.:; Approximately 5 ft31,S oJ; proj,ect water ,!'Jas been q:mtinua1.ly released, into Mt. Elbert COnduit 1:h.r'6ugh the Federal Fish Hatchery into Lake Fork ,. Creek for enhancement of their operation during 1979-80. On September 30, 1980, there \',\9re 90,182 acre-feet in storage in TurqUOise Lake. CF&I Steel COrporation owned 22,985 acre-feet of this storage, and the rE!llainder was Fryingpan-Arkansas Project water or water of other entities stored by oontract in Fryingpan-Arkansas Project space. Table 2 and Exhibit 5 sb:lw the operation of Turquoise Reservoir during water year 1980. '. D. Pueblo Reservoir The high spring flow forecast for the Arkansas 'River Basin required that a special fl=d oontrol plan be developed to oot exceed the operation elevation limit of 4833 for Pueblo Reservoir. ' Pueblo Reservoir's oontent on September 30, 1979, was 46,274 acre-feet. Pueblo Reservoir oontent was at an all tirre high of 104,025 acre-feet during fl=d oontrol operations on June 16, 1980. This oontent exceeded our operation elevation limit of 4833 feet by 2 feet. This fl=d operation plan for operation ~e 4833 (see E$ibit 1) was to limit the flow to a maximum of 5,000lt /s in the river at AVOndale and store those peaks above 5,000 ft /s Imtil such tirre as the storage in the ' reservoir increased to elevation 4836. Between elevations 4839 and 4857, the release fran the reservoir \\Ould be increased 500 ft /s for each 3-foot increase in storage elevation in the reservoir until the release fran the reservoir equals the capacity of the outlet \\Orks-- about elevation 4857. Above that elevation, the release from the reservoir would be equal to the capacity of the outlet \\Orks. This operation would essentia!ly oontrol the 100-year flood with a maximun release of about 8,800 ft Is. This operation oontrolled the high ~ring flows with a maximun elevation of 4836 feet and a flow of 5,848 ft /s at Avondale. During the high spring flows, the Division Engineer and the COrps of Engineers perfonned a study and ~termined that the maximun safe channel capacity at Avondale is 6,000 ft Is. The Winter Water Storage Program was in effect fran December 1,1979 to March 15, 1980 and made 40,00.0 acre-feet of water available for use by downstream users. .. ,Pueblo ReseI:VOir oontent on September 30, 1980, was 34,705 acre-feet. COmpletion of oonstI:uction of the stability bem on Pueblo Dam should pennit filling the reservoir above the present elevation limit of 4833 feet in 1981. Table 3 and Exhibit 6 sb:lw Pueblo Reservoir operations during water year 1980. The COrps of Engineers estimated $86,000 for flood oontrol benefits ac=ing to Pueblo ReseI:VOir operations. See Table 9. E. Twin Lakes The project has not taken over operation of TwiP. Lakes as of September 30, 1980. There has, txlwever, been scxre regulation of project water in Twin Lakes by exchange. '. 4