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<br />C"'~ Location.--Water_alage recorder, Iat 37041'20", long 106'27'30", in NWt sec.29, T,40 N" R.6 E" on right bank,
<br />( .. 20 ft downstream from county highway bridge, 5 mHes upatream from Pims Creek, and 6 miles west of Del
<br />(" Norte, Datum of gage is 7,980.25 ft above mean Sea level, dalum of 1929, Prior to May 16, 1908, staff gage
<br />..~ at site 4 miles downstream. Records are equivalent.
<br />
<br />STREAM FLOW
<br />
<br />Rio Grande near Del Norte, Colo.
<br />
<br />Drainage area.--l,320 sq mi, approximately.
<br />
<br />Averaa-e discharge,__77 years (1890-1966), 914 cis (661,700 acre-it per year),
<br />
<br />Extremes,--1889_1968: Maximum discharge, 18,000 cfs Oci, 5, 1911 (gage height, 6.80 ft), from rating curve
<br />extended above 6,000 cis; minimum daily, 69 ets Aug. 21, 1902,
<br />
<br />Remarks,--Records excellent except for some winter months, which are fair, Flow regulated by four reservoirs,
<br />total capacity 126,100 acre-ft, and by several smaller ones, SIx transmountain diversions import water into
<br />basin' above station,
<br />
<br />Monthly and yearly discharge, in cubic feet per second
<br />
<br />Month
<br />
<br />Seconcl_ Maximum Minimum Mean Runoff in
<br />foot- days dally dally Acre-feet
<br />6,120 230 160 197 12.140
<br />5,740 230 170 205 11, 390
<br />10,363 588 200 334 20, 550
<br />24,751 1,620 554 825 49,090
<br />90, 650 4,090 1,830 2,924 179, 800
<br />71,970 3,700 1,740 2,399 142, 800
<br />40, 927 1,870 664 1,320 81,180
<br />14,875 813 242 480 29. 500
<br />8,185 395 217 273 16,230
<br />7,702 291 217 248 15,280
<br />5,481 237 142 183 10,870
<br />5,439 286 119 175 10,790
<br />292, 203 4,090 119 801 579,600
<br />Conejos River below Platoro Reservoir, Cola,
<br />
<br />January ',."..."..,."...,.".
<br />Febroary ,.....,......,.......,
<br />March ..,'., ......,." ,.,. '" .
<br />April ..........."...,. ,.,'."
<br />May, '" .....,. ..........."..
<br />June..",..".."""...,.... .
<br />July.,............,..., ,.,.",
<br />August .,',.,.,.,....."..",.,
<br />September...,. ..,.." '........
<br />October ,.......,.,..,."..""
<br />November ',."........,..,.."
<br />December ,..."....".,.......
<br />Calendar Year 1966
<br />
<br />Location,--Water_atage recorder and concrete control, Iat 37021'20", long 106'32'35", in NWtNWt sec,22, T,36 N"
<br />RA E., on left bank 1,500 ft downstream from valVe house for Platoro Reservoir and half a mile northwest of
<br />Platoro, Datum of gage is 9,868,60 ft above mean sea level (levels by Bureau of Reclamation),
<br />
<br />DraillaR'e area. - -40 sq mi, approximately.
<br />
<br />Average diSCharge, --13 years (1953.66), 88.3 cfs (63, 930 acre-ft per year).
<br />
<br />Extremes.--1952_68: Maximum discharge, 1,160 cfs Nov, 1, 1957; maximum gage height, 4,29 ft June 15, 1958; no
<br />flow Oct, 16-20, 1955.
<br />
<br />Remarks,--Records good except those for winter months, which are poOr, No diversions above atation, Flow
<br />completely regulated by Platoro ReserVOir (capacityl 60,000 acre-ft).
<br />
<br />Monthly and yearly diSCharge, in cubic feet per second
<br />
<br />Month
<br />
<br />Second.
<br />ioot.days
<br />
<br />Maximum
<br />dally
<br />
<br />Minimum
<br />dally
<br />
<br />Mean Runoff in
<br />Acre-feet
<br />12 738
<br />12 666
<br />12 738
<br />19.3 1,150
<br />466 28, 640
<br />349 20,780
<br />79,8 4,910
<br />37,2 2,280
<br />9,27 552
<br />27,7 1,710
<br />299 17,780
<br />8,5 523
<br />III 80,460
<br />
<br />January.................,.,., ,
<br />February ',.,.,.""........."
<br />March.......,..,.. .... ,.......
<br />April............... ,.....,."
<br />May .. ..............,..,......
<br />June...., .,..,.,...".........
<br />July,.... .,...........,....,., .
<br />August ,..".,..,..,."., "...
<br />SePtember.,....,............ ..
<br />October ,............".",.,..
<br />November .,.,.,......,.,..".,
<br />December ,.."...,............
<br />:'alendar year 1966
<br />
<br />372
<br />336
<br />372
<br />580
<br />14,438
<br />10,477
<br />2,474
<br />1,152
<br />278, 1
<br />860
<br />81 963.6
<br />263,5
<br />
<br />40, 666, 2
<br />
<br />146
<br />820 114
<br />790 176
<br />176 38
<br />87 19
<br />16 6.2
<br />188 16
<br />602
<br />820 6.2
<br />
<br />33
<br />
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