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<br />12 <br /> <br />. <br /> <br />6. The estiJ:1S.ted annual benofits of the Pensacola Reservoir, as <br />contemplated and as constructed are as foll~7s: <br /> <br />Prevented <br />Direct <br />Flood losses <br />Ark. River <br /> <br />Prevonted <br />Indirect <br />losses <br /> <br />Enhance- <br />ment <br /> <br />J.:i:JS. R. <br />Bene f1 ts <br /> <br />Recrea- <br />tion &: <br />l111d Ii fe <br /> <br />Total <br /> <br />, <br /> <br />Ori~n&l Plan - <br />960.000 ac.-ft, 94,000 47,000 65,000 }}l,ooO I} ,000 550.000 <br />aisting plan - <br />245.000 ac .-ft. 24,000 12,000 17,000 85,000 l},OOO 151,000 <br />UltitlAte plan - <br />540,000 ao.-ft. 5},OOO 26,000 }7.000 186,000 l},OOO }15.000 <br /> <br />7. <br />flows is <br /> <br />A comparison of the effeot of these systems on Arkansas peak <br />6.8 follows: <br /> <br />Peak Flow in the Arkansas River below the Uouth of the Grand River <br /> <br />. <br /> <br />Uatural p'3B.k, 1<;fZl . . . . . . . . . . . . . . . . . . . }78.000 c.f.s <br />Peak 8.8 modified by } reservoirs recolll:lended to Congress 286.900 " <br />Peak as modified by present Pensacola and J.:arkheJn Ferry <br />am Fort Gibson }l},loo " <br />. . . . . . . . . . . . . . . . . . . <br />Peak as modified by proposed Pensacola and. Larkham Ferry <br />and Fort Gi baon 301,200 " <br />. . . , . . . . . . . . . . . . . . . .. <br /> <br />E. Grand (Neosho) River in Kansas <br /> <br />L. The Neosho River rises in the Flint liilI area in Central Kansas, <br />floy{s southell8ter1y about 300 miles 'to 'the Kansas-0k1ahoma boundary, <br />thenoe southerly 163 miles to the Arkansas River. Below the mouth of <br />Spring River, mile 130, it Is kno~rn as Grand aiver. The river draina <br />an area of nearly 13,000 square miles. The stream is 46D mdles in lellb'th, <br />but the ~ffitershod is only about 260 miles. <br /> <br />, <br /> <br />2. The Neosho River, espeoially in its upper and middle reaches, is <br />orooked but has a wellooode!'1ned permanent bed and stable b!Ul!'~s. The stream <br />is a succes~ion of pools and shoals. The principal tributaries are <br />Cotto~~od alve" 1.830 square miles; Sprin- Hiver~ 2,655 square niles; <br />Elk River, 1.015 square ~le8: Cabin Creek, 490 square miles; and <br />Spavinaw Creek. 400 square niles. The three largest tributaries. Cotton- <br />wood, Sprin~ and 2lk Rivers, drain nearly one-half of the entire water- <br />shed and the watershed of the Cottonwood River is rore than double that <br />of the Neosho ~iver above their junction. <br /> <br />}. <br />ral sing, <br /> <br />The watershed <br />dairyinr;, and <br /> <br />is devoted principally to agriculture, stock <br />in the Ozark sections to o,c~Ards and vineyards. <br /> <br />. <br /> <br />2402 <br />