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<br />I lOB " <br />'_.__ .-"Q. ,.:J <br /> <br />INTRODUCTION <br /> <br />Floods of dwnaging proportions are rare in the Arkansas Valley <br />above Canon City and in the entire diversion area on the'Western Slope. <br />From Canon City eastvmrd in the Arkansas Valley, however, large damaging <br />floods increase in frequency and volume to near the mouth of the Purga- <br />toire River at the hef>.d of John Uartin Reservoir. Beyond this reservoir <br />main stream floods begin to flatten out and are rapidly dissipated. <br /> <br />. <br /> <br />Exhibit 15 in the back of this appendix shows tho general plan of <br />the Initial Development together ,~th a possible expansion into the <br />Maximum Gravity Diversion~ Tho measure of flood oontrol on the Eastern <br />Slope provided by the l,lo.ximUIll Gro.vity Diversion would be the snmo as <br />that by the Initial Devolopment. Tho Initial Dovelopment would includo <br />a reservoir 6 miles ,rest of Pueblo on tho Arkansas River, vdth consi- <br />derable spaco for flood storage. Incidontal flood control ,rould be pro- <br />vided by Sugar Loef end Trdn Lekos Reservoirs in tho uppor Arkensa~ <br />Valley. 'The :rni tiel Dove},opm(mt \"lOuld involve un average "di vorsion" or- <br />" about 60iOOg~o.~re';fee"f"o~ c.dditioncl ,mter annual!y from ,the -ErY].Egpan <br />Rivera.nd.Tts.tdbutc.riesi- ,rhi's diverted ,mtor "ould "not ncce!sarily <br />contribute to tho flood fle\'IS of t'ho Are-..o.nsas River. The,""ffiter~,would be <br />in:t.or,oepted above elovatlon, 10,000 feet, o.nd conveyed through'tho-Conti-' <br />nentel Di'vido by means of ttinnols to the enlarged Sugar Loo.f Re"servoir <br />(Turquoise Lake) on Lake Fork of the Arknnsns River 3.5 milos northwest <br />of Lco.dville. Wo.ter from tho East and Tennos50a Ferks of the Arklilnao.s <br />River ,rould o.lso bo diverted into Sugar Loaf Roservoir for storage end <br />rogulation along \'lith tho Fryingpan Hater l' or ;:>owor production and irri- <br />gation. Roloases from the ponerplent at Sugar Loaf Roservoir \.ould flow <br />through tho Elbert Povlor Canel to generate porror in Elbort Po\Verplo.nt, <br />the tailraco of which ,muld bo in tho enlargod Tvdn Lakas Roservoir on <br />Lake Crock, 12 milos south of Leadvillo. Additional rmtor ,rould be <br />di vertod into T\'lin Lo.kes Roservoir from the Arkansas Rivor near Snowdon. <br />Veter .rould bo raleasod from Tvnn Lakos Resorvoir end eonvcyOd via tho <br />Arkansas PovlOr Canal, roughly parallal to tho Arkansas River, to.Salida. <br />More weter ,muld bo intercepted from the Arkansas River en routo. Power <br />rrould bo generated at tho various p01'1erplnnts along tho aanc.l. At the <br />Salido P01'1orplant the wo.tor ,rould bo roturned to the Arkansas Rivor from <br />.monco it ,rould flow into Puoble Resorvoir to bo storod for releaso when <br />noedod for irrigation and nunieipnl uses. <br /> <br />I <br />I <br />, <br /> <br />I, <br />IC',.-- <br />1:::::- <br /> <br />I,co",,=" <br />1-' =- <br />1'= _-__- <br /> <br />------ --- --- <br /> <br />_I <br />1 <br /> <br />Ar- -,- <br />""'1 -------- <br /> <br />--~----- ---- <br /> <br />vii <br />