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3894 28 MISSOURI RIVER BASIN sbould be multiple-purpose projeets. St.udies of multiple-purpose projects above Sioux City show that the following should be included lIS a part of the comprehensive plan of development for tbe Missouri River Basin: Project LocatIon I Approximate Approximate grossstofn.ge tota[construc- capacity tlOucost Garrison 1________.________________ Near Garrison, N. Dak_______________.. Oak Cr"ek___.._______________h__ Near Mobridr,e, S. DIlk____________.____ Oahe. _____________._______,___.__ NerU" Pit'T"" S. DDk__.______.___________ Fort RandnlL__________..________ Netl! Wht!c1~r. S. Dak________________~.. Oa..in~ Point._______________.____ Nrar Yankton, S. Dn.k__________________ Lowl!r CanyoD_____.______________ Near Li\'iogston, Mont______.____.._~__ Boyscn.______________..______..__ NeQc Tbermopolis. W)'O___.___________. Aqt.(ut li,OOO.OOO 6,(00,000 6.000,000 6,0(10,000 200,000 2,2:-.(1,1100 3,500,000 $130,000,000 6O,0l)l),OOO 50.000,000 75.000,000 11i,0fl0.000 35, Qr)(). 000 20,000,000 'J'otaL_hn______...__._..__I___._____n__~..______...____._______.____1 40,950,000 I 085,000,000 IlnrJudes dive.r~Jon Into tbo Dakotas. 42. In COlillcction with tho proposed Garrison Reservoir, a practical solution to a situation wbieh has long existed in the States of North and South D"kota and which periodically causes much trouble is possible. During excessively dry ye"rs the regions in the vicinity of Devils Lake and the James Ri,'er Basin become so short of watcr that animals are sUbjected to great suffering and tbe people to severe bardship. Droughts almost, if not entirely, d"stroy animal and plant life in these areas. The best over-all use of tbe multiple-plll"pose reservoirs would permit a feasiblc diversion of water from tbe Missouri River into the Dakot.as for domestic use and other purposes. First there must be conserved and stored in the Missouri Basin enough water to provide tbis diversion. Tbe plan proposed herein provides for such storagc in tbe reservoirs listed in the preceding paragraph. By the time that water is available, there should also be completed pumping facilities and conduits needed to provide the Devils Lake and James River n~gions at least 8S much water ns they now have during scasons of normal rainfllll. Later this flow of water can be increased to provide much additional irrigation. The plan herein contemplates that tbere sball be st.arted improvements to provide a diversion of water from the Missouri River into the Dllkotas and that this diversion shOUld be progressively increased and improved llS time and conditiolls warrant such inlprovements. The 10cl1tion of the facilities for the first phase of this improvement is indicated on the map accompanying this report. v. ECONOMIC JUSTIFICATION AND DISCUSSION . 43. The damage caused by the] 943 floods alone on tbe Missouri River between SiolD' Ci t.y and the mou tb is estimated to be about $35,000,000, or almost one-half of the cost of the proposed levee project. 44. Tbe total valuc of the arca subjcct. to floods along the !lIissouri Rivcr bctwccn Siam: City and the mouth, including aU fixed and mov- able property, has bcen estimatcd to be about $],000,000,000. 4.5. The compreheusive plan proposed hercin would provide not <lnly complet.e protect.ion for this arca against all past floods on the 11Jssoun River, but. would effect important reductions in flood stnges ,all the lower Mississippi River. In addition to providing flood-control