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<br />GIllon <br /> <br />-~;i~~< <br /> <br />~~~) <br /> <br />such excess use does not prohibit any or all or the rema~n~ng States fro~ <br />utilizing their respective allotments. Thus, the availability of water <br />through the year 2005 ro~ use of Navajo ReserToir water in New Mexico <br />for municipal and industrial purposes depends upon the extent or water <br />use in the entire Upper Basin during that period and upon the physical <br />availability or ~ater at Navajo Reservoir. <br /> <br />HYdrologic studies considering the 40 years prior to the year 2005 indicate, <br />with reasonable certainty, the physical availability of a substantial <br />amount of water rrom Navajo Reservoir for municipal and industrial uses <br />in Ne~ Mexico. Expressed in terms or depletions, such uses during that <br />contractual 40-year period could reasonably be allowed to rise to 100,000 <br />acre-feet per annum. Our best judgment, based solely on the type and <br />magnitude of interest exhibited in tentative applications received to <br />date, indicates a corresponding diversion at Navajo Dam or 200,000 acre- <br />reet, inasmuch as returns of.40 percent or the river system rrom cooling <br />water in steam-electric plants and as much as 60 percent returns from <br />other industries and municipalities can be anticipated. Operational <br />studies or Navajo Reservoir indicate that the 200,000 acre-feet or annual <br />municipal and industrial diversion demand, subject to shortages, can <br />be sustained by the flow or the San Juan River during the next 40 years <br />with regulation arrorded by Navajo Reservoir. This diversion would <br />be over and above present uses and uses authorized ror the Navajo Indian <br />Irrigation and San Juan-Chama Projects. Also, New !<Iexico' s portion or <br />the proposed Animas-La Plata Project could be served as well. <br /> <br />Colorado River operation studies based on use of existing hydrologic <br />data, coupled with a liberal estimate or future Upper Basin depletions, <br />indicate that with the regulation arrorded by the Colorado River Storage <br />Project, the Upper Basin could meet its obligation ror water delivery <br />at Lee Ferry and still readily accommodate a 100,000 acre-foot depletion <br />ror municipal and industri.al uses in New !<Iexico. Exclusive of the 100,000 <br />acre-root depletion, the study indicates a minimum release of 8,500,000 <br />acre-reet annually could be sustained at Glen Canyon Dam through the <br />year 2005. By including the additional depletion of 100,000 acre-reet <br />annually, the resulting minimum annual release at Glen Canyon Dam by <br />the year 2005 would be approximately 8,400,000 acre-reet. This provides <br />ample margin above the 8,250,000 acre-root figure, which, as discussed <br />in relation to the Animas-La Plata Project water supply determination, <br />is deemed critical in order to avoid making controversial interpreta- <br />tions of the Colorado River Compact. <br /> <br />5 <br />