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<br />STREAMFLOW
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<br />Rio Chama below Abiquiu Dam, N. Mex.
<br />Location.--Water_stage recorder, lat 36'14'12", long 106'24'59", in SE\;SE\; sec. 8, T. 23 N"
<br />R. 5 E., on right bank 0.8 mile downstream rrom Abiquiu Dam and 5.9 miles northwest or
<br />Abiquiu. Altitude or gage is 6,040 rt (rrom river-prorile map and topographic map).
<br />Draina~e area .--2,147 sq mi or which about 100 sq mi is probably noncontributing.
<br />Average dlscharge.__ll years (1926-72), 349 efa (252,900 acre-feet per year).
<br />Extremes ,--1961-72: MaXimum diSCharge, 2,990 crs July 1, 1965 (gage height, 6.69 rt);
<br />minimum about 0.5 ers Mar. 17, 1966.
<br />
<br />RemarkS.--Records good except those ror Winter months, which are rair. Flow regulated by
<br />Heron, El Vado, and Abiquiu Reservoirs. Diversions above station ror irrigation or about
<br />17,000 acres. SUbsequent to May 1971 rlow arrected by the release or transmountain water.
<br />
<br /> Monthlv and vearly discharge. in cubic feet Del' seCond
<br /> Second_ Maximum Minimum RUnoff' in
<br />Month root-days daily daily Mean Acre-feet
<br />January 2,228 115 46 71.9 4,420
<br />February 6,335 1,150 41 218 12,570
<br />March 11,188 489 84 361 22,190
<br />April 11,617 659 208 387 23,040
<br />May 7,487 387 120 242 14,850
<br />June 6,470 315 89 216 12,830
<br />July 6,230 400 33 201 12,360
<br />August 3,967 282 37 128 7,870
<br />September 1,931 213 10 64.4 3,830
<br />October 8,324 1,010 16 269 16,510
<br />t-lovember 6,361 363 71 212 12,620
<br />December 3, 368 168 70 109 6 680
<br />Calendar year 1972 75,506 1,150 10 206 149,770
<br />
<br />Rio Grande at Otowi Bridge, near San Ildefonso, N. Mex.
<br />Location.--Water_stage recorder, lat 35'52'29", long 106'08'30", in San Ilderonso Pueblo Grant,
<br />400 rt downstream from bridge on State Highway 4, 1.8 miles southwest or San lldefonso
<br />Pueblo, 2.5 miles downstream from pOJoaque River, and 6.8 miles west of poJoaque. Datum or
<br />gage is 5,488.48 ft above mean sea level, datum of 1929, Prior to May 19, 1904, and July 25
<br />to Oct. 1, 190~, staff gage at site 180 ft upstream at datum 2.02 ft lower.
<br />Drainage area.--14,300 sq mi, approximately (inclUdes 2,940 sq mi in closed basin in San Luis
<br />Valley, Colo.)
<br />Average discharge.__73 years (1896-1905, 1910-72) 1,507 crs (1,092,000 acre-ft per year).
<br />Extremes,--1895_1905, 1910-72: Maximum discharge, 24,400 cf. May 23, 1920 (gage height, 14.1
<br />ft); minimum daily, 60 cfa July 4, 5, 1902.
<br />
<br />Remarks,--Records good. Flow partly regulated by Heron, El Vado, and Abiquiu Reservoirs,
<br />DiverSions above station for irrigation or about 600,000 acres in Colorado and 75,000 acres
<br />in New Mexico. Subsequent to May 1971 rlow afrected by releases of transmountain water
<br />from Heron Reservoir.
<br />
<br /> f>':onthlv and Yearly diSCharge in cubic feet Del' second
<br /> Second- Maximum Minimum Runoff in
<br />Month foot-days daH v daH v Mean Acre-feet
<br />January 21,330 776 512 688 42,310
<br />February 25,001 1,910 585 862 49,590
<br />March 39,482 1,730 688 1,27~ 78,310
<br />April 22,220 1,070 537 741 44,070
<br />May 13,425 622 280 433 26,630
<br />June 14,101 645 338 470 27,970
<br />July 12,205 1,060 210 394 24,210
<br />August 12,108 734 273 391 2~,020
<br />September 13,483 898 270 449 26,740
<br />OctOber 21,369 1,670 244 689 42,390
<br />November 30,610 1,350 m 1'$20 60,710
<br />December 22 766 819 34 45 160
<br />Calendar year 1972 248,100 1,910 210 678 492,100
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