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nn0351 . of record was 1932 through September 1938. The USGS determined that condi- tions were not favorable at this site for accurate measurements and the station was abandoned in 1938. Mancos River near Cortez The gage was located 0.8 mile upstream from the mouth of Johnson Canyon, with a 302 square mile drainage area. The period of record was July 1976 through June 22, 1979. Records are considered to be good (less than 10 percent error in the daily records), except those for the winter period which are poor (greater than 15 percent error). Flows at the gage are affected by irrigation diversions for about 11,500 acres, reservoir storage, and municipal diversions. . Mancos River below Johnson Canyon In June 1979, the gage located upstream of Johnson Canyon was moved to a new site 0.1 mile downstream of Johnson Canyon. The drainage area is 320 square miles. Records were maintained for the period of June 1979 through September 1982. Records are considered to be good, except those for the winter period which are poor. Mancos River near Towaoc The gaging station is located 0.1 mile upstream from the bridge on U.S. Highway 666, two miles north of the Colorado-New Mexico state line. The drainage area is approximately 550 square miles. Records are available for the period of 1920 through 1943 and February 1951 through 1985. Records are considered to be good, except for the winter period, which are poor. Flows at the gage are affected by irrigation, reservoir storage, and municipal diversions above the station. La Plata River near Hesperus The gage is located just downstream of the bridge on U.S. Highway 160. The drainage area is approximately 37 square miles. Records are available for the period of 1918 through 1985. Records are generally considered by the . -5- k _.;