Colorado River System Gross Number Analysis.do

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Available for Developlnent (i.e. consulnptive use) High Risk (full development of compact entitlements) 3,855,000 - 2,550,000 = 1,305,000 af/yr Medium Risk (finn yield through a 1950's drought) 3,079,000 - 2,550,000 = 529,000 af/yr Low Risk (Assuming we will face droughts 10% worse than the 1950' s type drought) 2,768,625 - 2,550,000 = 218,625 af/yr Little Risk (Assuming we will face droughts 15% worse than the 1950's type drought) 2,613,375 - 2,550,000 = 63,375 Analysis . Colorado has between 63,375 and 1.3 MAP left to develop on the Colorado System . Assuming the State is somewhat risk adverse but is willing to accept a low-to-medium risk, we have between 218,000 and 529,000 afleft to develop. Projects Underdeveloped or Being Constructed (potential'/lltllre conslImptive lIse) In-Basin Trans-Basin Animas - La Plata Denver's Dillon Reservoir/Robert's Tunnel 57,100 [{flyr ~ 15,000 [{flyr Ute Water System Denver's Moffat Firming Proj ect ~5, 000 [{flyr (restFom ag tran~fer) 18,000 [{flyr Dallas Creek Windy Gap Firming Proj ect 17, 000 [{f~vr 30,000 [{flyr Elkhead Enlargement Homestake II <3, 000 [{f~vr 15,000 [{flyr Ruedi Reservoir 23,000 [{flyr Wolford Reservoir ?? af/yr Energy Development ~70,000 [{flyr TOTAL = 253,100 . If successful, these proj ects COULD use an additional 250 kaf. . If the state is only willing to accept a low level of risk, these projects can develop, but additional development would have a higher risk. . If the state is willing to accept a medium level of risk, these projects can develop and there will be about 250,000 af of remaining development at the same level of risk. Next Steps 1. Where and when is this water available? (Randy's outline and SWSI) 2. Risks to existing uses and future demands