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<br />STREAMFLOW
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<br />37
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<br />Rio Chama below Abiquiu Dam, N. Mex.
<br />
<br />Location, --Water-stage recorder, lat 36014'10", long 106"25'00", in SEisEi sec. 8, T. 23 N., R. 5 E., on right
<br />bank half a mile downstream from Abiquiu Dam and 6 mUes northwest of Abiquiu, Altitude of gage is 6, 040 ft
<br />(from river-profile map and tOpographic map).
<br />
<br />Drainage area. n2, 147 sq mt of which about 100 sq mt is probably noncontributing.
<br />
<br />Average discharge. --9 years (1926-70), 376 cis (272,400 acre-feet per year).
<br />
<br />Extremes. --1961-70' Maximum discharge, 2,990 cfs July 1, 1965 (gage height, 6.69 ft); minimum about 0.5 cfs
<br />Mar. 17, 1966.
<br />
<br />Remarks. --Records good except those for winter months, which are fair. Flow regulated by El Vado and Abiquiu
<br />Reservoirs. Diversions above station for irrigation of about 17,000 acres.
<br />
<br /> Monthlv and vearly discharp:e in cubic feet per second
<br /> Second_ Maximum Minimum Runoff in
<br />Month foot-days daily daily Mean Acre-feet
<br />January 3,318 156 24 107 6,580
<br />February 3,391 327 49 121 6,730
<br />March 3,213 160 51 104 6,370
<br />April 6,192 421 114 206 J2,280
<br />May 27, 953 1,510 212 902 55,440
<br />June 35,131 2,550 188 1.171 69,680
<br />July 4,910 395 73 158 9,740
<br />August 4,209 400 55 136 8,350
<br />September e,OOO 904 59 267 15,870
<br />October 3,467 208 62 112 6,880
<br />November 13,302 752 64 443 26, 380
<br />December 2,591 165 28 83.6 5,140
<br />Calendar year 1970 115, 677 2,550 24 317 229, 400
<br />
<br />Rio Grande at Otowi Bridge, near San Ildefonso, N. Mex.
<br />
<br />Location. --Water-stage recorder, Iat 35'1;2'30", long 106'08'30", In San Ildefonso Pueblo Grant, 400 ft downstream
<br />from bridge on stale Highway 4, It miles southwest of San Ildefonso Pueblo, 2i miles downstream from Pojoaque
<br />River, and 7 miles west of Pojuaque. Datum of gage is 5,488.48 ft above mean sea level, datum of 1929. Prior
<br />to May 19, 1904, and July 25 to Oct. I, 1904, stalf gage at site 180 it upstream at datum 2.02 ft lower.
<br />
<br />Dratnage area. --14, 300 sq ml, approximately (Includes 2,940 sq ml in closed basin in San Luis Valley, Colo.)
<br />
<br />Average discharge. --71 years (1896-1905, 1910-70) 1,529 cfs (I, 108,000 acre-it per year).
<br />
<br />Extremes. --1895-1905, 1910-70: Maximum discharge, 24,400 cfs May 23, 1920 (gage height, 14. I ft); minImum
<br />daily, 60 cIs July 4, 5, 1902.
<br />
<br />Remarks. hRecords good. Flow partly regulated by EI Vado Reservoir since 1935 and Abiquiu Reservoir since
<br />1962. Diversions above statton for Irrigation of about 600, 000 acres in Colorado and 75, 000 acres in New Mexico.
<br />
<br /> Monthlv and vearlv dischar~e in cubic feet per second
<br /> Month Second_ Maximum Minimum Mean Runoff in
<br /> foot-dayS daily datly Acre-feet
<br />January 25,469 952 658 822 50,520
<br />February 27,053 1,270 745 966 53, 660
<br />March 30,098 1,100 916 971 59,700
<br />April 34,624 1,490 902 1,154 68, 680
<br />May 83, 000 3,530 1,210 2,677 164, 600
<br />June 60, 890 3,300 818 2,030 120, 800
<br />July 21,198 1,420 455 684 42,050
<br />August 12,905 859 260 416 25,600
<br />September 32,091 2,180 258 1,070 63,650
<br />October 24,410 1,110 538 787 48,420
<br />November 42,602 1,680 900 1,420 84,500
<br />December 23, 943 1,060 594 772 47,490
<br />Calendar year 1970 418,283 3,530 258 1,146 829, 700
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