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<br />92
<br />
<br />FLOODS OF SEPT. 1970 IN ARIZ., UTAH, COLO., AND N. MEX.
<br />
<br />STATION DATA-L1TILE COLO. RIVER BASIN
<br />
<br />93
<br />
<br />(65) 09398300. Blue Ridge Reservoir near Pine, Ariz.
<br />
<br />Clear Creek below Willow Creek, near Winslow, Ariz.-Continued
<br />
<br />Location. --Lat 34033'19", long 111G11'00", in NEisE; sec. 33, T.14'N., R.ll E.,
<br />Coconino County. in Coconino National Forest, on upstream side of left end of
<br />spillway structure of Blue Ridge Dam on East Clear Creek, at mouth of General
<br />Springs Canyon, 7.3 mi (11. 7 kIn) east of Clints Well, and 20 mi (32 km) northeast
<br />of Pine.
<br />
<br />Mean discharge. in cubic feet per second, 1970
<br />of Clear Creek below Willow Creek, near Winslow, Ariz.
<br />
<br />Day
<br />Sept. 4
<br />5
<br />6
<br />
<br />Discharge Day Discharge Day
<br />0 Sept. 7 800 Sept. 9
<br />100 8 300 10
<br />5,000
<br />
<br />Discharge
<br />150
<br />70
<br />
<br />Drainalle area. --71. 1 mi2 (184. 1 km2),
<br />
<br />Gsp;e-heiJtht record. --Water-stage recorder graph except 2000 hours Sept. 5 to 2400
<br />hours Sept. 9 and 1700 hours Sept. 14 to 2400 hours Sept. 15. Datum of gage is
<br />6,620 ft (2, 018 m) above mean sea level; gage readings have been reduced to
<br />elevations above mean sea level.
<br />
<br />(57) 09399000. Clear Creek near Winslow, Ariz.
<br />
<br />Maxima. --Sept. 5-15, 1970: Contents, not determined, probably occurred Sept. 12.
<br />---rn55 to August 1970: Contents, 16,000 acre-ft (19. 7 hm3) Dec. 30, 1965, based
<br />on outflow studies and weather reCords.
<br />
<br />Location. --Lat 34058'1011, long 110038'4011, in SEt sec. 9, T. 18 N., R. 16 E., Navajo
<br />County, on right bank 1. 5 mi (2.4 km) upstream from mouth and 5 mi (8 km) south-
<br />east of Winslow.
<br />
<br />Drainage area. --607 mi2 (1,572 km2).
<br />
<br />,
<br />
<br />Remarks. --Dam completed and storage began in December 1964. Total capacity is
<br />19,500 acre-ft (24. 0 hm3) at elevation 6, 735 ft (2,053 m), of which 15,000 acre-ft
<br />(18.5 hro3) is usable storage below 6,720 ft (2,048 m)-crest of spillway.
<br />
<br />Ga",;e-height record. --Digital recorder tape. Datum of gage is 4,861. 32 ft (1, 481. 730 m)
<br />above mean sea level.
<br />
<br /> Elevation, in feet, and contents, in acre-feet, at indicated time, 1970
<br />Date Hour Elevation Contents Date Hour Elevation Contents
<br />Sept. 5 2000 6,684.38 7,280 Sept. 8 0600 6,704.73 11,260
<br /> 2200 6,688.70 8,050 1200 6,705.00 11,320
<br /> 2400 6,692.30 8,720 1800 6, 704. 88 11,290
<br /> 2400 6,705.00 11,320
<br />Sept. 6 0200 6,694.80 9,220
<br /> 0400 6, 696. 50 9,560 Sept. 9 0600 6,705.18 11,360
<br /> 0600 6,697.84 9,830 1200 6,705.53 11,440
<br /> 0900 6,699.32 10,120 1800 6,705.26 11,380
<br /> 1200 6,700.38 10,340 2400 6,705.52 11,430
<br /> 1600 6,701. 38 10,540
<br /> 2200 6,702.30 10,730 Sept. 14 1700 6,705.98 11,540
<br /> 2400 6,705.97 11,530
<br />Sept. 7 0400 6,703.17 10,920
<br /> 1000 6,703.78 11,050 Sept. 15 1200 6,705.94 11,530
<br />, 1200 6,704.00 11,100 2400 6,705.91 11,520
<br /> 2400 6, 704. 44 11,200
<br /> (66' 09398500. Clear Creek below Willow Creek, near Winslow, Ariz.
<br />
<br />DischarJ,!e record. --Stage-discharge relation defined by current-meter measurements
<br />below 10,500 ft3/s (297 m3/s) and by slope-area measurement at 18.700 (t3/s
<br />(530 m3/s) and velocity-area measurement at 44,200 ft3/s (1,250 m3/s).
<br />
<br />Maxima. --Sept. 4-12, 1970: Discharge, 9,650 (t3/s (273 m3/s) 1300 hours Sept. 6
<br />~ height, 11. 10 ft Or 3.383 m).
<br />1929 to August 1970: Discharge, 50,000 (t3/s (1,420 m3/s) Apr. 4, 1929 (gage
<br />height, 18. 1 ft or 5.52 m).
<br />An earlier flood reached a stage 3 ft (0.9 m) higher than that of Apr. 4, 1929,
<br />at a site 1,850 ft (564 m) downstream.
<br />
<br />Mean discharge, in cubic feet per second, 1970
<br />
<br />548
<br />304
<br />145
<br />
<br />Day
<br />Sept. 11
<br />12
<br />
<br />Discharge
<br />93
<br />49
<br />
<br />Day
<br />Sept. 5
<br />6
<br />7
<br />
<br />Discharge
<br />o
<br />2,960
<br />1,570
<br />
<br />Day
<br />Sept. 8
<br />9
<br />10
<br />
<br />Discharge
<br />
<br />Gage height, in feel, and discharge, in cubic feet per second, at indicated time, 1970
<br />
<br />Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge
<br /> height height height
<br />Sept. 5 Sept. 6*-Con. Sept. 7*-Con.
<br />2400 4.35 0 1500 10.41 7,580 1200 7.45 1,410
<br />Sept. 6* 1600 10.06 6,650 1600 7.23 1,140
<br />0600 4.36 0 1800 9. 58 5,450 2000 7.05 945
<br />1130 4. 36 0 2000 9.16 4,400 2400 6.90 790
<br />1145 7.85 1,960 2200 8,83 3,700 Sept. 8*
<br />1200 9.94 6,350 2400 8.53 3,100 0600 6.73 636
<br />1230 10.98 9,290 Sept. 7* 1200 6. 60 .530
<br />1300 11.10 9,650 0400 8.06 2,280 1800 6.49 448
<br />1400 10.76 8,630 0800 7.72 1,770 2400 6.42 399
<br />
<br />*Daily means computed from data in addition to figures shown.
<br />
<br />Location. uLat 34040'0011, long 111000'25", in NWtNE; sec. 30, T. 15 N., R.13 E.,
<br />Coconino County, in Sit greaves National Forest, on right bank 2 mi (3 km) down-
<br />stream from Willow Creek and 30 mi (48 km) southwest of Winslow.
<br />
<br />Drainage area. --321 mi2 (831 km2).
<br />
<br />Gage-height record. --F1oodmarks only. Gage not operating. Altitude of gage is
<br />6,000 ft (1, 800 m), from Forest Service map.
<br />
<br />Diachar.ge record. --Stage-discharge relation defined by current-meter measurements
<br />below 6,000 ft3/s (170 m3/s) and extended to 16,400 ft3/a (464 m3/s). Discharge
<br />estimated from hydrographic comparison with downstream station and Chevelon
<br />Creek below Wildcat Canyon near Winslow.
<br />
<br />Maxima. --Sept. 4-10, 1970: Discharge, 15,800 ft3/a (447 m3/s), time unknown, Sept. 5
<br />~ height, 20.65 ft or 6.294 m, from fioodmarks).
<br />1947 to August 1970: Discharge, 16,400 ft3/s (464 m3/s) Jan. 18, 1952 (gage
<br />height, 21. 5 ft or 6.55 m).
<br />
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