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<br />62
<br />
<br />FLOODS OF SEPT. 1970 IN ARIZ., UTAH, COLO., AND N. MEX.
<br />
<br />Navajo Rivet at Edith, Colo.-Continued
<br />
<br />Gage height. in feet. and discharge, in cubic feet per second, at indicated time, 1970,
<br />of Navajo River at Edith, Colo.
<br />
<br />Hour Gage Discharge Ho= Gage Discharge Hour Gage Discharge
<br /> height height height
<br />Sept. ,. 2400 3.72 161 1700 5.19 1,070
<br />0200 4.80 888 Sept. 13' 2400 4.91 804
<br />0430 4.53 500 0100 4, 15 310 Sept. 15'
<br />0630 4.92 78' 0600 3.79 182 1200 4. 45 470
<br />1030 5.10 950 0830 3.80 185 1800 4.35 420
<br />1200 5.02 876 1030 4.45 445 2400 4. 19 34'
<br />1330 4.37 415 1230 4.35 395 Sept. 16*
<br />1500 4.89 759 1500 4.85 710 1200 4.07 298
<br />1600 4.74 '42 1700 5.02 858 2400 3.94 24'
<br />
<br />*Daily means computed from data in addition to figures shown,
<br />
<br />(24) 09346400. San Juan River near Carracas, Colo.
<br />
<br />Location. --Lat 37"00'4311. long 107"'18'34". in SEtSWt sec. 17, T. 32 N., R.4 W..
<br />Archuleta County, on right bank just upstream from flow line of Navajo Reservoir,
<br />3 mi (5 krn) northwest of Carracas, 7.2 mi (11. 6 krn) upstream from Piedra River,
<br />and at mile 17B. 8 (287. 7 krn).
<br />
<br />Drainage area. --I, 230 mi2 (3,190 krn2), approximately.
<br />
<br />GaJ;!"e-height record. uDigital recorder tape punched at 30-minute intervals. Altitude
<br />of gage is 6,090 ft (1,856 m), from river-profile map.
<br />
<br />Dischar)le record. --Stage.discharge relation defined hy current-meter measurements
<br />below 5, 700 fPls (160 m3/s) and extended above on basis of slope-area measurement
<br />of peak flow.
<br />
<br />~. --Sept. 4-18, 1970: Discharge, 9,730 ft3/s (276 m3/s) 1500 hours Sept. 6
<br />(gage height, 8. 34 ft or 2. 542 m).
<br />1961 to August 1970: Discharge, 6,120 ft3/a (173 m3/s) May 22, 1965 (gage
<br />height, 6.85 it or 2.088 m).
<br />Maximum flood known occurred Oct. 5, ]9]1. Major floods occurred Sept. 5 or 6,
<br />1909 and June 29, 1927.
<br />
<br />Mean discharge, in cubic feet per second, 1970
<br />
<br />Day Discharge Day Discharge Day Discharge
<br />Sept. 4 200 Sept. 9 1,120 Sept. 14 6,120
<br /> 5 876 10 844 15 4,030
<br /> , 6,450 11 '68 16 2,380
<br /> 7 2,870 12 682 17 1,690
<br /> 8 1,620 13 2,330 18 1,330
<br />
<br />Gage height, in feet, and dil?charge, in cubic feet p"er second, at indicated time, 1970,
<br />of San Juan River near Carracas, Colo.
<br />
<br />Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge
<br /> height height height
<br />Sept. 5' Sept. 6"'-Con. Sept. 13"'-Con.
<br />0200 2.02 210 2000 6.68 6,060 2400 6.22 5,200
<br />1000 2.20 274 2400 5.85 4,420 Sept. 14'
<br />1400 3.28 892 Sept. 7' 0400 6.46 6,010
<br />2000 3.87 1,440 0600 5.14 3,240 0800 6.18 5,420
<br />2400 5.16 3,180 1200 4.80 2,700 1200 6. 67 6,480
<br />Sept. ,. 1800 4.56 2,360 1600 6.78 6,720
<br />0400 6.50 5,64D 2400 4.35 2, D7D 1800 6.86 6, 890
<br />0600 6.44 5,520 Sept. 13' 2000 6.72 6,590
<br />0800 6.61 5,880 0200 3.30 948 2400 6.13 5,320
<br />
<br />
<br />STATION DATA-SAN JUAN RIVER BASIN
<br />
<br />San Juan River near Carracas, Colo.-Continued
<br />
<br />Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1971
<br />of San Juan River near Carracas, Colo.
<br />
<br />Hour Gage Discharge Hour Gage Discharge Hour Gage Discha:
<br /> height height height
<br />1200 7. 64 8,150 0600 3.98 1,610 Sept. 15'
<br />1400 B.08 9,130 1000 4.00 1,630 0600 5.50 4,44
<br />1500 8.34 9,730 1400 3.91 1,530 1200 5.16 3,83
<br />1600 B.09 9,160 1800 4.71 2,560 2400 4.66 3,00
<br />1800 7. 52 7,880 2000 5.66 4,120
<br />
<br />"'Daily means computed from data In addIt10n to fIgures shown.
<br />
<br />(25) 09347200. Middle Fork Piedra River near pagoaa Springs, Colo.
<br />
<br />Location. --Lat 37"29'12", long 107"09'46", in SWtNW-: sec. 35, T. 38'''N., R.3 W.,
<br />Hinsdale County, on right bank O. 6 mi (1. 0 krn) upstream from Toner-Taylor
<br />ditch, 4.1 mi (6. 6 km) northeast of Piedra guard station, and 17 mi (27 kIn)
<br />northwest of Pagosa Springs.
<br />
<br />Drainage area. --32. 2 mi2 (83.4 km2).
<br />
<br />Gage-height record. --Water-stage recorder tape (hourly punches). Altitude of gage i
<br />8,210 ft (2,502 m), from topographic map.
<br />
<br />Discharge record. --Stage-discharge relation defined by current-meter measurement!
<br />below 200 ft;1fs (5. 7 m3/s) and by slope-area measurement of 2, 520 ft3/s (71. 4 m~
<br />
<br />Maxima. --Sept. 5-18, 1970: Discharge, 2,520 ft3/s (71. 4 m3/s) 2330 hours Sept. 5
<br />(gage height, 4.39 ft or 1. 338 m, from noodmarks).
<br />October 1969 to August 1970: Discharge, 300 ft3/s or 8.5 m3/s (estimated)
<br />May 17, 1970.
<br />
<br />Mean discharge, in cubic feet per second, 1970
<br />
<br />Day
<br />Sept. 5
<br />,
<br />7
<br />8
<br />9
<br />
<br />Discharge
<br />279
<br />853
<br />332
<br />184
<br />117
<br />
<br />Day
<br />Sept. 10
<br />11
<br />12
<br />13
<br />14
<br />
<br />"
<br />'8
<br />63
<br />447
<br />774
<br />
<br />Discharge
<br />
<br />Day
<br />Sept. 15
<br />16
<br />17
<br />18
<br />
<br />Dischargf
<br />530
<br />356
<br />252
<br />178
<br />
<br />Gage height. in feet, and discharge, in cubic feet per second, at indicated time, 197C
<br />of Middle Fork Piedra River near pagosa Springs, Colo.
<br />
<br />Hour Gage Discharge Hour Gage Discharge Hour Gage Dischar
<br /> height height height
<br />Sept. 4 Sept. 6*-Con. Sept. 13-Con.
<br />2400 1. 50 72 1300 2.78 944 1300 2.58 761
<br />Sept. 5' 1800 2.60 787 1400 2.40 60!
<br />1200 1. 36 53 2400 2.26 492 2000 2.45 65:
<br />1400 1. 67 110 Sept. 7' 2400 2.41 61:
<br />1600 1. 98 226 0600 2.19 429 Sept. 14'
<br />1800 2.09 284 1200 1. 99 302 0600 2.44 65
<br />2000 2.29 408 2400 1. 88 240 0800 2.70 87:
<br />2100 2.51 568 Sept. 12 1200 2.79 95:
<br />2200 2.90 890 2400 1. 47 76 1400 2.68 85'
<br />2300 3.41 1,390 Sept. 13 1800 2.63 801
<br />2330 4.39 2,520 0300 1. 47 78 2400 2.52 71!
<br />2400 3.42 1,400 0600 1. 90 24' Sept. 15'
<br />Sept. ,. 0800 1. 95 27' 1200 2.29 52:
<br />0100 3.06 1,160 0900 2.27 500 2400 2.1B 44:
<br />0200 2.78 944 1200 2.26 492
<br />
<br />. Daily means computed from data in addItIon to figures shown.
<br />
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