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<br />'OOl.gS1 <br /> <br />C <br />-0 <br />-p <br />-Y <br /> <br />STATE OF NEW MEXICO <br /> <br />State Engineer Office <br />Santa Fe <br /> <br />S. E. Reynolds <br />State Engineer <br /> <br />June 10, 1958 <br /> <br />Mr. John Barnard <br />First Assistant Attorney General <br />Office of the Attorney General <br />Denver, Colorado <br /> <br />Dear John: <br /> <br />Your letter of April 24, 1958 requested certain data concerning <br />present and future uses of water in the San Juan River Basin, <br />New Mexico. I regret the delay in furnishing you this information, <br />but as I advised you during our conversation in Santa Fe on April <br />29, the office has been preoccupied with a heavy work load in <br />connection with the presentation of New Mexico's case in the Arizona <br />v California litigation; also, the compilation of these data in the <br />form requested has required more effort than I had anticipated. <br /> <br />Much of the data requested in your letter is not available in pre- <br />cise form and it has been necessary to make a number of approxima7 <br />tions in the preparation of the attached tables. With minor correc- <br />tions, the data contained in the report entitled "A Review of the <br />San Juan River Problem in New Mexico," dated March 4, 1953 are con- <br />sidered to adequately reflect usage in New Mexico as of 1950. The <br />minor corrections required are the addition of 1462 acres of Indian <br />irrigation in the headwaters of La Jara Creek, 717 acres of decreed <br />irrigation rights in the headwaters of Chaco Wash, and 423 acres of <br />Indian irrigation on the Navajo River. These acreages were apparently' <br />inadvertently omitted from the 1953 report. <br /> <br />Usage as of 1958 is arrived at by adding to the 1950 estimate, the <br />estimate of usage under permits issued by the State Engineer Office <br />and usage on Indian acreage reported by the Bureau of Indian Affairs <br />to have been placed under irrigation since 1950. Crop consumptive <br />use rates used for the 1953 report have been used to estimate deple- <br />tions by irrigation usage developed since 1950. <br /> <br />It is assumed that new municipal and industrial developments cause <br />a depletion equal to 50% of the permitted diversion. <br /> <br />It is assumed that incidental usage remains unchanged from that <br />shown in the 1953 report. <br /> <br />,;. <~ -; <br /> <br />, , <br /> <br />;k;- " ~.i'_,-~ <br /> <br />[ <I <br />j~ <br />"; . ---";' <br />",",,-,'00>> <br />