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<br />STREAMFLOW
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<br />Los Pinos River near Ortiz, Colo.
<br />
<br />35
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<br />~atlon. --Water-stage recorder, lat 36'58', long 106'\)3", In New Mexico in N~ sec. 34, T, 32 N., R. 8 E.,
<br />on left bank 1 mlle south of New Mexico-Colorado State line, 2 mlles SOUthwest of Ortiz, and 2~ mlles
<br />upstream from mouth. Altitude of gage is 8, 100 ft.
<br />
<br />DrainaR'e area. ..167 sq mt.
<br />Averag-e discharge. --52 years (1915-20, 1925-70), 123 cfs (89, 110 acre-ft per year).
<br />Extremes. --1915-20, 1925-70: Maximum diSCharge, 3,160 cis May 12, 1941 (gage height, 5.77 ft, site and
<br />datum then in use), from rating curve extended above 1,600 cfs; minimum observed, 4.0 cfs Dec. 17, 1945.
<br />
<br />Remarks. --Records good except those for winter months, which are fair. DiverSion above station for irrigation.
<br />
<br /> Monthly ane! yearly discharge, in cubic feet per second
<br />Month Second_ Maximum Minimum Mean Runoff in
<br /> foot.dayS daily daily Acre-feet
<br />January 661 - - 21. 3 1,310
<br />February 528 24 16 18.9 1,050
<br />March 705 33 18 22.7 1,400
<br />April 2,254 220 21 75. I 4,470
<br />May 19,662 1,060 112 534 39,000
<br />June 5,973 357 91 199 11,850
<br />July IJ 676 104 31 54. I 3,320
<br />August 1,182 72 26 38.1 2,340
<br />September 2,227 189 23 74,2 4,420
<br />OctOber 1,181 47 33 38. I 2,340
<br />November 838 38 20 27.9 1,660
<br />December 742 - - 23.9 1,470
<br />Calendar year 1970 37, 629 1,060 - 103 74,640
<br />
<br />Conejos River near Lasauses, Colo.
<br />
<br />Location. --Water-stage recorders, !at 37018', long 105045', In secs. 2 and 11 (two channels), T. 35 N., R. II E.,
<br />on left bank of main channel 100 ft downstream from bridge on State HIghway 158 and on rigbt bank of secondary
<br />channel 130 ft downstream from bridge, hall a mile upstream from mouth, and 2 miles nortb of Lasauses.
<br />. Datum of gage on main Channel is 7,495.02 It and on secondary (south) channel is 7, 495. 89 ft above mean sea
<br />level (levels by Bureau of Reclamation).
<br />
<br />Drainage area. --887 sq mi.
<br />Average discharge. --49 years (1922-70), 188 cis (136,200 acre.ft per year).
<br />Extremes. --1921-70: Maximum diSCharge, 3,890 cfs May 15, 1941; no flow at times in 1934, 1948, 1950-51,
<br />1903-56, 1958-64, 1966-67.
<br />
<br />Remarks. --Records fair above 10 cfs and poor below. Diversions for Irrigation of about 75,000 acres above
<br />station.
<br />
<br /> Monthlv and vearlv dischanre in cubic fee:tper second
<br />Month Second_ Maximum Minimum Mean Runoff in
<br />foot -days dally dally Acre-feet
<br />January 2,929 111 70 94.5 5,810
<br />February 3,234 137 92 116 6,410
<br />March 3,652 140 98 118 7,240
<br />April 4,203 239 67 140 8, 340
<br />May 15,986 1, OlD 107 516 31,710
<br />June 4,981.6 340 8.6 166 9,880
<br />July 1,516.0 258 5.0 48.9 3,010
<br />August 32.68 3.5 .08 1. 05 85
<br />September 3,995.97 858 .17 133 7,930
<br />October 4,361 208 41 141 8,650
<br />November 7,156 490 103 239 14,190
<br />December 3,086 119 77 99.5 6,120
<br />Calendar year 1970 55,133,25 1, OlD .08 151 109, 400
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