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<br />Rio Grande near Del Norte, Colo.
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<br />~.-Waler-Slage recorder, lal 37"41'22", long 106"27'38", in NW1/4 sec. 29, T. 40 N" R 5 E., on righl bank, 20 fl
<br />downstream from oounty highway brid8e, 6 miles wesl of Del NOrle, and 18 miles uPSIr..", from Pinos Creek. Datum 01
<br />gage is 7,98025 fl above mean sea level, datum ofl929. Prior to May 16, 1908, stafl gage al site 4 miles downslr..",. Records
<br />are equivalent.
<br />Drainavp area.-J,320 sq mi, approximately.
<br />Avera.. dischar",_I08 years Q890-1997), 904 1r'ls (654,900 acre-It per year).
<br />Exlremes.-1889-1997: Maximum discharge, 18,000 fr'1 s Oct. 5, I9ll (gage heigh~ 6.80 It), from rating curve extended above 12,900
<br />1r'ls: minimum daily, 69 fr'ls Aug. 21, 1902.
<br />Remarks,-Records good except those for winter months, which are fair. flow regulated by four reservoirs, tola! capadty 126,100
<br />acre--ft, and by several smaller ones. Six transmountain diversions import water into basin above station.
<br />
<br /> Monthly and yearly discharge, in cubic feet per second
<br /> Second- Maximum Minimum Runoff in
<br />Month loot-days daily daily Mean aae.feet
<br />January 5,110 190 140 165 10,140
<br />February 4,690 200 150 168 9,300
<br />March 11,314 632 170 365 22,440
<br />April 22,31)1 1,460 377 743 44.230
<br />May 103,710 5,610 1,210 3.345 205,700
<br />June 132,030 7,090 3,050 4,401 261,900
<br />July 67,970 3,060 1,580 2,193 134,800
<br />Augusl 35,820 2.070 711 1,155 71,050
<br />September 32.218 3,]80 515 1,074 63,900
<br />October 38,382 2,560 824 1,238 76,130
<br />November 15,426 775 351 514 30,600
<br />December 9,092 470 240 293 18,030
<br />Calendar year 1997 7,090 140 1,310 478,(163
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<br />Conejos River below Platoro Reservoir, Colo.
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<br />Location.-Water-slage reoorder and con""te control, lot 37"2l18", long 106"32'37", in NWI/4NW1/4 see. 22, T. 36 N., R 4 E.,
<br />on lefl bank 1,100 It downSlream from valve house lor Platoro Reservoir, and 0.7 mile northwesl of Plataro. Datum 01 gage is
<br />9.866.60 it above mean sea level Oevels by Bureau of Reclamation),
<br />Drainalle area.-4Q sq mi, approximately.
<br />Avera.., dlschar...-4S years 0890(1997), 94.0 Ir' I s (68,100 acre-fl per year).
<br />Extremes.-1952_97: Maximum discharge, U60 1r'ls Nov, ~ 1957; maximum gage height, 429 ftJW1e 15, 1958; no Bow 0<1.16-20,
<br />1955.
<br />Remarks.-Records good excopt those lor winter months, which are lair. No diversions Bbo"" SIaUon. Row CXlDlplete1y
<br />regulated by Platoro Reservoir (capadty, 59,S70 acre-ft).
<br />
<br /> Monthly and yearly discharge, in cubic feet per second
<br /> Second- Maximum Minimum Runoff in
<br />Month lool-days daily dmIy Mean acre-/eet
<br />January 223.0 7.3 7.1 7.19 442
<br />Febnuu-y 208,9 7,6 7.3 7.46 414
<br />March 239,5 7.9 7.6 7.73 475
<br />April 1,0272 100 7.9 342 2,040
<br />May 6,463 597 52 208 12,820
<br />June 10,755 670 112 359 21.330
<br />July 9,284 563 123 299 18,410
<br />Augus. 4,515 206 83 146 8,960
<br />September 3,682 329 47 123 7,300
<br />October 4,204 216 51 136 8.340
<br />November 517.3 61 7.3 172 1,030
<br />December 226.3 7,3 7.3 7.3 449
<br />Calendar year 1997 41.3452 670 7,1 113 82,010
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