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<br />C) Rio Grande near Del Norte, Colo.
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<br />CJ:ocation,-Water-stage recorder.lat 37"41'22", long 106"27'38", in NW1/4 sec. 29, T. 40 N., R. 5 E" on right bank, 20 ft downstream from
<br />county highway bridge, 6 miles west of Del Norte, and 18 miles upstream from Pinos Creek. Datum of gage is 7,980.25 ft above
<br />mean sea level, datum of 1929. Prior to May 16, 1908, staff gage at site 4 miles downstream. Records are equivalent.
<br />Draina2e area.-1,320 sq mi, approximately.
<br />Avera2e dischare-e.-t07 years (1890-1996), 900 ftJ /s (652,000 acre-ft per year). ".
<br />Extremes...1889-1996: Maximum discharge, 18,000 ft! /s Oct. 5, 1911 (gage height. 6.80 ft), from rating CUtveextended above 12,900:ftl Is;
<br />minimum daily. 69 ftJ /s Aug, 21, 1902.
<br />Remarks,-Records good except those for winter months, which are fair. Flow regulated by four reservoirs, total capadty 126,100 aere-
<br />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 foot~ays daily daily Mean acre-feet
<br />January 5,200 210 140 168 10.310
<br />February 6,020 264 150 208 11,940
<br />March 6,714 261 190 217 13,320
<br />April 17.232 1,460 231 574 34,180
<br />May 71,350 3.380 1,060 2,302 141,500
<br />June 40,885 1,780 949 1,363 81,100
<br />July 13,880 819 238 448 27,530
<br />August 6,908 321 162 223 13,700
<br />September 7,769 359 178 259 15,410
<br />October 11,750 5% 242 379 23,310
<br />November 6.962 294 165 232 13,810
<br />December 5,840 240 160 188 11,580
<br />Calendar year 1996 3,380 140 548 397,700
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<br />Conejos River below Platoro Reservoir, Colo.
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<br />Location.-Water-stage recorder and concrete control, lat 3702118", long 1060)2'37", in NWl/4NW1/4 sec. 22, T. 36 N., R. 4 E., on left
<br />bank 1,100 ft downstream from valve house for Platoro Reservoir, and 0.7 mile northwest of Platoro. Datum of gage is 9,866.60 ft
<br />above mean sea level (levels by Bureau of Reclamation).
<br />Drainae:e area.-40 sq mi, approximately.
<br />Avera2e discharge.--44 years (1890-1996), 93.6 f~/s (67,810 acre-ft per year).
<br />Extremes.--1952-96: Maximum discharge, 1,160 ft3 /s Nov. I, 1957; maximum gage height, 4.29 ft June 15, 1958; no flow Oct. 16-20, 1955.
<br />Remarks.--Records good except those for winter months, which are fair. No diversions above station. Flow completely regulated by
<br />Platoro Reservoir (capadty, 59,570 acre-ft).
<br />
<br /> Monthly and yearly discharge, in cubic feet per second
<br /> Second- Maximum Minimum Runoff In
<br />Month foot-days dally daily Mean acre-feet
<br />January 293,6 12 7.1 9.47 582
<br />February 215,0 7,6 7.2 7.41 426
<br />March 243.1 8,1 7,6 7.84 482
<br />April 1,646.3 176 8.1 54.9 3,270
<br />May 8.860 526 166 286 17.570
<br />June 7,396 423 88 247 14,670
<br />July 5,352 265 110 173 10,620
<br />August 5,816 292 69 188 11.540
<br />September 2,007 122 33 66,9 3,980
<br />October 1,%2.1 140 8.0 63.3 3,890
<br />November 210.0 7.0 7,0 7.00 417
<br />December 217.0 7,0 7.0 7.00 430
<br />Calendar year 1996 34.220.1 526 7.0 93.5 67,880
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