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Show " •*.- 11* Diking Proposals tc Obtain Fresh Water Reservoir* 4 ( a) . Largo Project; It is proposed to erect dikes fron South end of lake to Antelope Island ( 14; 100 ft « lon#, containing 18100,. 000 cubic yards) Antelope Island to Fremoat Island ( 37., 600 ft. Ion?;, containing 6, B62sO00 cu„ vds0) from Fremont Island to Promontory Point ( 15 .-.£ 00 ft. lens, containing 7 » 100rQC0 cuc yds.) The total yardage amounts to ] 5> Oo2^ 000 and total length of dikes ia 12- 6? miles • Soundings and botton samples show that the construction of the first two dikes would' present no difficulties. Hewerer, a bottom of vary soft mudabout the consistency of mortar or plaster occurs for considerable distance 1 along the line of the last mentioned dike, and night present real j| difficulties la the construction of the dike « Thci area of a fresh water reservoir thas established wouli be about 275 » 000 acres, while the reservoir's capacity is calculated at lr, 450 thousand acre feet at olevation 4 ,, 205 ft. ( neander line) f At elevation 4,199 the area shrinks to 113,000 sires ? and the capacity to 377 thousand acre feet* 7iewed from the standpoint of a reservoir that might be pumped down from elevation 4^ 205 to elevation 4,199 for irrifsatir:^ purposes during the months of June, July and August0 cal- V^ emulations for an average year ahow the following;? Water on hand June 1 1,450 thousand ssre Aug. Wat^ r flowing in through streams daring Jun. Jul^ 306 Total -----_---. 2^ 756 Less arater evaporated 566 Less water on hand. Spet. 1 377 Water Available ---- •-.-•'--- 813 It H > l » II M W tl n n * r n |