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<br />94
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<br />FLOODS OF SEPT. 1970 IN ARIZ., UTAH, COLO., AND N. MEX.
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<br />STATION DATA-LITTLE COLO. RIVER BASIN
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<br />95
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<br />(68) 09399400. Jacks Canyon Creek near Winslow Ariz.
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<br />(71) 09401000. Little Colorado River at Grand Falls. Ariz.
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<br />(Gaging station, discontinued 1960)
<br />Location. --Lat 35026', long 111012'. in T. 24 N.. R. 11 E. (unsurveyed), 1,000 it (300 m)
<br />d wnstream from Grand Falls on Navajo Indian Reservation, 4.5 mi (7.2 krn) upstream
<br />f:om Dinnebito Wash, 30 mi (48 km) northeast of Flagstaff. and 96 mi (154 kIn)
<br />upstream from mouth.
<br />2 2 '1
<br />Drainage area. --21, 200 mi (54,900 lon ). apprQ}nmate y.
<br />Gage-height record. --Crest stage only. from high-water mark in well. Datum of gage
<br />is 4,438.9 it (1, 352. 98 m) above mean sea level, datum of 1929.
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<br />Location. --Lat 34055117", long 110"47'49", in NWtNW-t sec. 31, T. 18 N., R. 15 E.,
<br />Coconino County, on left bank 9 mi (14 km) northeast of Sunset Pass and 9.5 mi
<br />(15.3 kIn) southwest of Winslow.
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<br />Drainage area. --280 mi2 (725 lan2).
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<br />Gage-height record. --Water-stage recorder. Altitude of gage is 5.220 ft (1. 591 m).
<br />from topographic map.
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<br />Discharge record. --Discharge based on estimate of the peak flow.
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<br />Maximum. --Sept. 4-10. 1970: Discharge. 1. 1 ft3/s (0.031 m3/s) Sept. 5 (gage height.
<br />3. 56 ft or 1. 085 m).
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<br />(Crest-stage station)
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<br />DischarJ;!e record. --Discharge obtained fro:n rati~g curve in use prior to discontinuance
<br />of station in 1960; stage-discharge re1ahon defmed by current-meter measurements.
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<br />Maxima. --Sept. 4-10, 1970; Discharge. 11,400 ft3/s (323 ro3/s) Sept. 6 (ga~e height.
<br />~ ft or 4. 75 m. from high-water mark in wep). 3
<br />1923 to August 1970: Discharge. 120.000 ft /s (3.400 m Is) Sept. 19. 1923
<br />(gage height. 47.0 ft or 14.33 m. from floodmarks).
<br />(72) 09401100. Dinnebito Wash near Oraibi, Ariz.
<br />
<br />(69) 09400200. Steamboat Wash tributary near Ganado, Ariz.
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<br />Location. --Lat 35045'50". long 109"48'00". Apache County. at State Highway 264.
<br />15 mi (24 Ian) west of Ganado.
<br />
<br />Drainage area. --0. 5 mi2 (1.3 lan2). approximately.
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<br />Gage-height record. --Crest stages only. Altitude of gage is 6,700 ft (2.040 mI. from
<br />topographic map.
<br />
<br />(Crest-stage station)
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<br />Discharge record. --Stage-discharge relation defined by theoretical rating/developed on
<br />the digital computer.
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<br />Maxima. --Sept. 4-10. 1970: Discharge. 360 ft3/s (10.2 m3/s) Sept. 5 (gage height.
<br />---a:23 ft or 2.509 m. from gage; 8.24 ft or 2.512 m. from high-water profile).
<br />1963 to August 1970: Discharge, 383 ft3Js (10.8 m3/s) Aug. 13, 1964 (gage height,
<br />8.28 ft or 2.524 m).
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<br />Location. --Lat 36003'10". long 110035'0611. in NWtNEt sec. 35. T. 31 N.. R. 16 E..
<br />Navajo County. 3.500 ft (1.070 m) east of Dinnebito Trading Post, 43 mi (69 krn)
<br />east of Tuba City. and 8.4 mi (13.5 km) north of Rocky Ridge Trading Post.
<br />
<br />Drainage area. --261 mi2 (676 km2).
<br />
<br />Gage-height record. --Crest stages only. Altitude of gage is 5.900 ft (1,800 m). from
<br />topographic map.
<br />
<br />(Crest-stage station)
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<br />Discharge record. --Stage-discharge relation defined by current-meter measurement
<br />at 40 ftJ/s (1. 1 m3/s) and slope-area measurementa at 5.890 ft3/s (167 m3/s)
<br />and at peak flow.
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<br />Maxima. --Sept. 4-10. 1970: Discharge, 28,900 ft3/s (818 m3/s) Sept. 5 (gage height,
<br />-----rort or 3.0 m. from high-watet: profile).
<br />196B to August ]970: Discharge, 5,890 ft3/s (167 m3/s) Aug. 2B, 1969 (gage
<br />height. 4.78 ft or 1. 457 m).
<br />(73) 09401400. Moenkopi Wash near Tuba City. Ariz.
<br />
<br />(70) 09400650. Sinclair Wash at Flagstaff. Ariz.
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<br />Location. --Lat 35009150". long 11l04P'48", in NWtNW! sec. 32. T. 21 N.. R. 7 E..
<br />Coconino County, at Holmes Avenue in Palmerville at Flagstaff.
<br />
<br />DrainaA"e area. --8. 16 mi2 (21. 13 lan2).
<br />Gage-height record. --Crest stages only. Altitude of gage is 6.900 ft (2, 100 m), from
<br />topographic map.
<br />
<br />Location. --Lat 36001'25", long 111023'48". in sec. 35. T. 31 N.. R.9 E. (unsurveyed),
<br />Coconino County. on Navajo Indian Reservation. on downstream side of bridge on
<br />U. S. Highway 89. 3.500 ft (1.070 m) downstream from Hamblin Wash. 11 mi (18 km)
<br />upstream from mouth. and 12 mi (19 km) southwest of Tuba City.
<br />Drainage area. -.2, 500 mi2 (6,500 kffi2). approximately. of which about 1.200 mi2
<br />(3.100 km"-) is partly or entirely noncontributing.
<br />
<br />Discharge record. - -Stage-discharge relation defined by theoretical rating developed on
<br />the digital computer.
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<br />Maximum. --Sept. 4-10, 1970: Discharge, 401 ft3Js (11.4 m3/s) Sept. 5 (gage height,
<br />19.21 ft or 5. 855 m, from gage; 19.3 ft or 5. 88 m. from high-water profile).
<br />
<br />Gage-height record. --Water-stage recorder graph. Datum of gage is 4,309 ft (I, 313.4 m)
<br />above mean sea level.
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<br />Discharge record. --Stage-discharge relation defined by current-meter measurements
<br />below 1.300 ftJ/s (37 m3/s) and extended above on basis of Slope-area measurements
<br />at gage height 8.84 ft (2. 694 m) and of peak flow.
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<br />Maxima. --Sept. 4-1Q. 1970: Discharge. 4.990 ft3/s (141 m3/s) 0730 hours Sept. 6
<br />(gage height. 11. 38 ft or 3.469 mI.
<br />1941 to August 1970: Discharge. 10.000 ft3/s (283 m3/s) Sept. 21. 1952 (gage
<br />height. 12.3 ft or 3. 75 m. site and datum then in use). from rating curve extended
<br />above 500 ft3/s (14 m3/s) on basis of slope-area measurement of peak flow.
<br />1926-41 at site 8 mi (13 km) upstream: Discharge. 15. 100 ft3~s (428 m3/S)
<br />Aug. 4, 1929, from rating :urve extended above 200 ft3/s (5. 7 m Is) on basis of
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