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WSP08418
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Last modified
1/26/2010 2:48:05 PM
Creation date
10/12/2006 2:58:23 AM
Metadata
Fields
Template:
Water Supply Protection
File Number
8220.114.I
Description
Dolores Participating Project
State
CO
Basin
San Juan/Dolores
Water Division
7
Date
3/24/1989
Author
USDOI-BOR
Title
Final Supplement to the Final Environmental Statement
Water Supply Pro - Doc Type
EIS
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<br />Sl!~1~IARY (Cont inued) <br /> <br />:250-fuot right-of-way for the Towaoc Can~ll. <br />would be required for tIlls [lUr!'Ose. <br /> <br />4. tot;-ll of 1,700 acres <br /> <br />r;o ~s_S_ r-,-~~ s.. ~~~.!1_e_,-~ciCL l!.,-"!..l-:" t_~ r_s_ <br /> <br />The Cortez Projects Office of the Rureau of Reclamation would he <br />the hea<iquarters for tht' construction of the salinity control ferItoret-> <br />and the other features of the Dolores Project. <br /> <br />~ e_ ~ a_t}-.2.r:!..L_~_i_f!..,=--e_n_a-,~~e_,_ _a_n_(i ~~e_p_ ~~ ~~l!.e_~~ <br /> <br />Since salinity features would be added to the project in the HVIC <br />system, a progressive program for the operation ann l"laintenance of lined <br />sections woulci be 11eeded to continue the control of seepage. Reclamation <br />would enter into" contract with the HVIC netailing the responsibilities <br />of tbe company for the proper operation and maiTlteTlance of all salinity <br />eOlltrol features, except the Towaoe Canal. <br /> <br />~ini..stratioTl <br /> <br />The rlflcu is negotiating with the HVIC and the Tribe for their <br />subcontracting the operation and maintenance responsibilities of the <br />salinity control facilities and the Towaoc laterals, respectively. The <br />Bureau of l.and Hanagement would develop and administer 474 acres of the <br />enhancement land, and the Colorado Division of Wildlife would administer <br />215 acres of the mitigation land. <br /> <br />T)e~}_~"'e~Prq,!it:.'!!~ <br /> <br />Beginning in 1989, the construction of the salinity control features <br />would take 4 years to complete and would be integrated with the estab- <br />lished project construction program. The sections of the Lone Pine and <br />Upper Hermana Laterals would he earth lined during the nonirrigation <br />months from October to Hay. The Towaoc Canal would be constructed as a <br />new canal close to the existing Lower Hermana l.ateral and Highline Ditch <br />to allow construction during the irrigation season. The Rocky Ford Pipe <br />l.aterals would be constructed with a mi nimul'l of interruption to HVIC <br />operations. <br /> <br />Effects of project modifications on salinity <br /> <br />The 1977 FE::> reported that 10,080 tons of saIt loading to the Colo- <br />rado River system would occur annually as ,1 result of implementing the <br />plan of development. This analysis, based only on the salt loading <br />effect of irrigating full service land, did not include the effect of <br />canal seepage or the increased deliveries to the HVIC area. An analysis <br />made since compl,~tion of the 1977 Definite Plan Report reveals that <br />40,570 tons of salt annually would be contributed ftom canal seepage, in- <br />cluding 7,500 tons from the Towaoc Canal on the west alignment and 1'3,070 <br /> <br />S-8 <br />
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