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<br />3<::) Rio Grande at Otowi Bridge, near San Ildefonso, N. Mex.
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<br />dOLocation.--Water-stage recorder, lat 35052'30", long 106008'30", in San Ildefonso Pueblo
<br />~ Grant, 400 ft downstrewp from bridge on State Highway 4, Ii miles scuthwest of
<br />N San Ildefonso Pueblo, 2. miles downstream from POJoaque River, and 7 miles west of
<br />' POJoaque. Datum of gage is 5,488.48 ft above mean sea level, datum of 1929. Prior tc
<br />i May 19, 1904, and July 25 to Oct. 1, 1904, staff gage at site 180 ft upstream at datum
<br />~ 2.02 ft lower.
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<br />STREAM FLOW
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<br />Average discharge.--60 years (1896-1905, 1910-59) 1,601 cfs (1,159,000 acre-ft per year).
<br />
<br />Extremes.--1895-1905, 1910-59: Maximum diSCharge, 24,400 cfs May 23, 1920 (gage height,
<br />14.1 ft); minimum daily, 60 cfs July 4, 5, 1902.
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<br />Remarks.--Records good. Flow partly regulated by El Vado Reservoir since 1935. Diversions
<br />above station for irrigation of about 600,000 acres in Colorado and 75,000 acres in
<br />New Mexico.
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<br />Monthl and earl dlBchar e In cubic t'eet er seoond
<br /> Second_ Maximum M1.nlmum RUnof'!'
<br />Month Mean in
<br /> :foot-days daily daily Acre-f'eet
<br />January. 18,,585 '700 506 60C 36.860
<br />February 18,364 755 591 656 36 , 420
<br />March. 18,770 737 506 605 37,230
<br />April. 20,090 1,080 514 670 39 ~850
<br />May. . 30,141 1,610 637 972 59,780
<br />June 12,874- 737 1S6 429 25,.540
<br />July . 12,961 933 167 418 25,710
<br />August 16,723 1,440 184 539 33,170
<br />September. 8,701 596 162 290 17,260
<br />October. 15,,401 906 229 497 30,550
<br />November 23,343 1,420 500 77s 46 ,300
<br />December 18 071 731 510 583 35,840
<br />a en ar year
<br /> Santa Fe River near Santa Fe, N. Max.
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<br />Locatlonl--Water-stage recorder and concrete control, lat 35041'10", long 105050'3f', in
<br />HE,SE, sec. 23, T. 17 N., R. 10 E., 0.4 mile downstream from McClure Dam, and 5.
<br />miles east of Santa Fe. Datum of gage is 7,718 ft above mean sea level, datum at 1929.
<br />Prior to Nov. 4, 1930, at site 1.5 miles downstream and Apr. 11, 1931, to September 1947
<br />at site 0.3 mile upstream.
<br />
<br />)rainage area.--18.2 sq mi.
<br />
<br />lverage diScharge.--47 years (1913-59), 8.49 cfs (6,150 acre-ft per year).
<br />
<br />xtremes.--1913-59: Maximum discharge, 1,500 cfs Aug. 14, 1921; minimum daily, 0.1 cts
<br />Feb. 7-10, 20, 21, 1927, Aug. 1-4, 1951.
<br />
<br />emarks.--Records good. Flow regulated by McClure Reservoir, completed in 1926, raised in
<br />1935 and again in 1947.
<br />
<br /> Monthlv and vearlv dlBchar~e in cubic feet per second
<br /> Seeond_ Maximum M1nimum Runoff
<br /> Month Mean in
<br /> foot-days dally dally Acre-feet
<br />January. . . . . . 81.4 4.7 1.9 2.63 161
<br />~ebruary . 55.4 2.1 1.9 1.9S 110
<br />tfareh. . . . . . . 73.4 4.9 1.7 2.37 146
<br />\pr11. . 183.7 9.8 4.7 6.12 364
<br />lay. . . . . . . . . . 274 9.8 8.1 8.84 543
<br />rune . . . 280.4 10 S.S 9.35 556
<br />ru1y . . . 248.2 8.8 7.0 8.01 492
<br />. Ugu8 t . . . 119.7 7.3 1.0 3.86 237
<br />.eptember. . . 26.9 1.0 .8 .90 53
<br />'otober. . .. . . 41.5 3.6 .7 1.34 82
<br />'ovember . . . 42.7 3:~ .9 1.:~ ~~
<br />eCdmber . . . . . . . 19:" 4
<br />alendar year lS5!1. . . . 11446.8 10 .4 3.96 21870
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