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<br /> KlNTHLY SUmRY OF DISCHARGE
<br /> RIO GRANDE NEAR DEL NORTE. COLORADO
<br />~._ Water_stage recorder in Sec. 29, T. 40 N., R. 5 E.. 5 miles upstream rrom Pines Creek, !iIld 6 miles west
<br />of Dal Norte, at State Bridge. From 1889 to September 1907, station maintained at site 4 miles downstream. Records
<br />.r. comparable.
<br />Drainage Area.- 1,320 square miles. Zero of gage is 7,982.21 feet above mean SEta level, datum of 1929.
<br />Records Available._ October II, 1889 to December 31, 1950.
<br />Extremes._ Maximwn discharge during year, 3,290 sacond_feet June 2 (gage height 3.53 feet); minimum daily discharge
<br />77 second_feet December 29.
<br /> 1839-1950; ~~imum discharge 18,000 second-feet October 5, 1911
<br /> (from rating curve extended above 6,000 second-feet); minimum.
<br /> daily. 77 second-feet December 29, 1950.
<br />Remarks._ Recorda considered excellent ab~ve 350 second_feet aad rood below, exeept tho~e for period of ice effect,
<br />J.auary 1, Maroh 3, November 9, 10, 16, 17, wieh ver. oOllputed 0.. baaia of 4 discl1arge meuurements, wether
<br />recorda, aad are fair. Diyera!ona for irriiation above atatioa. _o~l capae1t1 117,600 acre_reet, and by several
<br />slMiler oaea.
<br /> Sec<:'nd- RlID-OL l:l
<br /> M:lnth foot-days lonximum 1.f5-nimum Mean Acre-feet
<br />January _ _ _ _ - - - - - - - - - - 6.206 <jC 1bO 200 12,310
<br />February _ _ _ _ _ _ _ _ _ _ _ _ _ _ 6,113 )20 175 218 12,130
<br />/1l.rch _ - - - - - - - - - - - - - - - 3,787 3Ce 225 28) 17,430
<br />April - - _ _ _ _ _ _ _ _ _ _ _ _ _ _ 33,725 2,260 4l~ 1,124 66,890
<br />May _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 57,290 2,81C 1,120 1,348 113,600
<br />June _ - - - - - - - ------ - - 61.740 3,120 1,120 2,058 122,500
<br />July _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 28,024 1,160 488 904 55,580
<br />August _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 12,662 60) 275 408 25,110
<br />September _ _ _ _ _ _ _ _ _ _ _ _ _ _ 6,772 ))5 154 226 13 ,,430
<br />October _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 7,305 500 165 2)6 14,490
<br />November ----- - - - - - - - - - 4,334 189 81 144 8,600
<br />December ------- ----- - - 4,156 189 77 1)4 8,240
<br />Year _ _ -~-- - - - - - - - - 2)7,119 I 3,120 77 650 470,300
<br /> RIC GRANDE NEAR LOBATOS, COWRAOO
<br />Location._ Water_stage recorder in Sec. 22, T. 33 N., R. 11 E., 6 miles north of Colorado_New Mexico State line,
<br />7 miles dovnstream from Culebra Creek, at highway bridge 10 miles east of Labatos.
<br />Drainai<:e Area._ 7,700 square miles (indudes 2,940 square miles in closed basin). Zero of gage is 7,426.79 feet
<br />at:ove ~an soa level, datum of 1929.
<br />Records Available._ June 1899 to September 1913 and October 1933 to December 1950 in reports of Geological Survey.
<br />June 1899 to December 1950 in reports of State Engineer.
<br />Extremes. - M:l.ximum discharge during year, 6,820 second_feet March 30 (gage height 6.34 feet); minimum daily
<br />discharge 0 second_feet July lo_August 6.
<br /> 1899-1950; ~AXimum discharge 13,100 second-feet June 2, 1905, from
<br /> rating curve extended above 8,000 second_feet; minimum daily dis_
<br /> charge 0 second_feet July l6_August 6, 1950.
<br />Remarks._ Records considered excellent except those for periods of ice effect Jan~ry 1 to Harch 3, which wre
<br />computed on basis of 4 discharge measurements, weather records, and are fair. Diversions for irrigation above
<br />station. Floll regula tad by many reservoirs on headwaters. Diversion dam upstream several miles from gage broke
<br />causing peak flow r.arch 30. Same diversion dam caused period of no flow in July and August.
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<br /> Second_ Run_off in
<br /> Month foot-days Maximum Minimum "'.n Acre feet
<br />January _ _ _ - - - - -------- 9,320 ))0 265 )01 18,490
<br />FebrU8IJ' - - - - - - - - - - - - - - 11,733 4% 315 419 23,270
<br />March - - - - - - - - - ------- 8,149.6 729 .8 26) 16,160
<br />April _ _ _ - - - - - - - - - - - - - 5,597 474 94 187 11,100
<br />May - - _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 6.496 36) 89 210 12,880
<br />June _ _ - - - - - - - - ------ 10 ,299 1,010 94 )4) 20,430
<br />July - _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 85) 8) 0 27.5 1,690
<br />August _ _ _ ~ _ _ _ _ _ _ _ _ _ _ _ 1,037.8 100 0 )).5 2,060
<br />September _ _ _ _ _ _ _ _ _ _ _ _ _ _ 1,255 92 15 41.8 2,490
<br />October _ _ _ _ _ _ _ _ --..--- 1,907 80 28 61.5 3,780
<br />November ------ ------- - - 3,~~~ ~~: ;~ 108 ,~,460
<br />December ------- - - - - - - - - 6 68 2 8 11 21.6 1 270
<br />Year _ _ _ .'2"_ _ _ _ ------ - - 66,591.4 1,010 0 182 132,080
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