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. I I I I I I I I I I I I I I I I I I I I I O(j32~9 TABLE XIV Runoff in Runoff in Year 1000 Acre Feet Year 1000 Acre Feet 1948 375.0 1954 196.2 1949 354.0 1955 203..4 1950 170.9 1956 196.6 1951 147.0 1952 361. 8 IS-yr. 1942-56 Av. 247.8 1953 153.3 4-yr. 1953-56 Av. 187.4 Runoff in Year 1000 Acre Feet 1942 )50.2 194) 216.) 1944 ))2.4 1945 222.0 1946 172.9 1947 264.7 Present Water Use Water is used in the basin for irrigation, domestic and livestock service of ranches and for municipal use by the To}ms of Bayfield and Ignacio. Water is also exported from the basin for use in the Rio Grande Basin in Colorado. Studies of irrigated land by the Bureau of Reclamation in 19)) show 32,550 acres were irrigated by water originating on the watershed of Pine River and tributaries. Of this, )1,910 acres were reported to be in Colo- rado and 640 acres in New Mexico. A study of the arable land under the Vallecito Reservoir conducted by the Bureau of Reclamation in 1942 gave )),160 acres as,the lands then irrigated. Of this, 32,660 acres were in Colorado, and 500 acres in New Mexico. The Pine River Project Extension report of 1958 by the Bureau of Reclamation states that since the 1942 arable land study an additional )300 acres of non-Indian land have been placed under irrigation and an additional 920 acres were ready for irrigation in 1958. The Bureau of Indian Affairs estimates that in Colorado 600 acres of Indian land have been placed under irrigation since 1942, and an additional 400 acres were ready for irrigation in 1959. -2)-