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<br />Montezuma Creek near Bluff, Utah
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<br />
<br />STATION DATA~SAN JUAN RIVER BASIN
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<br />8 I
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<br />86
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<br />FLOODS OF SEPT. 1970 IN ARIZ., UTAH, COLO., AND N.
<br />(56) 09378600.
<br />
<br />MEX.
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<br />(59) 09379080. Chinle Wash tributary near Rock Point, Ariz.
<br />
<br />(Crest-stage station)
<br />
<br />Location. --Lat 38018'3011, long 109017'35" in NW1SW.l.
<br />Juan County. about 100 ft (30 m) above b'ridge ... St ~ s~:. 16, T. 40 S., R. 24 E,. San
<br />(5.8 mi or 9. 3 km by creek) above mouth and o~4 a. e(23'ghkmw)ay 262, 3.4 mi or 5.5 krn
<br />, ml southeast of Bluff.
<br />
<br />Drainage area. --I, 200 mi2 (3 100 km2) .
<br />, , approXimately.
<br />
<br />Gal{~-heig:ht record. --Crest stages only. Altitude of gage pri r t S t
<br />discharge was 4,490 ft (1, 369 m), from topogr-aphic map. 0 0 ep ember 1970 peak
<br />
<br />
<br />Dischar~e record: --Stag~-.discharge relation prior to the flood of Sept. 6. 1970, has no
<br />relatIon to ratmg condlhons during or Subsequent to that n d
<br />determined by slope-area measurement of peak flow. 00 . The maximum was
<br />
<br />(Crest-stage station)
<br />
<br />Location. --Lat 360471, long 110040', Apache County. a~ Navajo Reservation Fload No.1!
<br />4,5 mi (7. 2 kIn) north of Rock Point,
<br />
<br />Drainage area. --2. 5 mi2 (6.5 km2).
<br />
<br />Gag:e-height record. --Crest stages only. Altitude of gage is 5,000 ft 0, 520 Ill), from
<br />topographic map.
<br />
<br />Discharge record, --Stage-discharge relation defined by theoretical rating developed on
<br />the digital computer,
<br />
<br />~. --S~pt. 4-18, 1970: Discharge, 40.500 ft3/s (1,150 m3/,] Se t 8 (
<br />undetermmed). p , gage height,
<br />1959 to August 1970: Discharge. 1.500 fi3/s (42 5 m3/ ) A 2, 1964 (gage
<br />height. 16.70 ft or 5.090 m). . s ug.
<br />
<br />Maxima. --Sept. 4-18, 1970: Discharge. 216 fi3/s (6. 12 m3/s) Sept. 5 (gage height.
<br />--s.69ft or 1.734 m, from gage; 5.68 ft or 1.731 m, from high-water profile).
<br />1964 to August 1970: Discharge. 25 n3/s or O. 71 m3/s (estimate,~) 1965 (gage
<br />height, 3.84 ft or 1. 170 m),
<br />
<br />(60) 09379200. Chinle Wash near Mexican Water. Ariz.
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<br />Remarks. --The crest-stage station and all points at datum 1
<br />the flood. contra were destroyed during
<br />
<br />Location. --Lat 36056138", long 109042'36", in sec. 19, T. 41 N., R. 25 E. (unsurveyed)
<br />Apache County, in Navajo Indian Reservation, in midstream 150 ft (46 km) upstream
<br />from bridge on U.S. Highway 164, 3 mi (5 kIn) upstream from Walker Creek, 4 mi
<br />(6 km) west of Mexican Water. 5 mi (8 krn) downstream from Laguna Creek, and 6 n
<br />(10 km) upstream from Arizona-Utah State line.
<br />
<br />(57) 09378650. Recapture Creek near Bluff, Utah
<br />
<br />(Miscl;?-llaneous sHe)
<br />Location. --Lat 37018'45", long 109027'15" in W1Wl. 13
<br />Jua C t 2 . (3 ) . l' 2 sec. . T. 40 S., R 22 E San
<br />noun y, rol km above mouth and 5 mi (8 km) east of Bluff.' .,
<br />Drainage area. ~-203 mi2 (526 krn2), approximately.
<br />Maximum. --Sept. 4-18. 1970: Discharge, 4 240 f 3/ ( 3
<br />area measurement of peak flow. . t s 120 m Is) Sept. 5, by slope_
<br />
<br />Drainage area. --3, 660 mi2 (9,480 km2). approximately, of which 360 mi2 (930 km2) is
<br />noncontributing.
<br />
<br />Gag:e-height record. --Water-stage recorder graph except Sept. 10-13, 17. 18, Altitud
<br />of gage is 4,720 ft (1, 439 m). from topographic map.
<br />
<br />Discharge record. uStage-discharge relation defined by current-meter measurements
<br />below 500 fiii/s (14 m3/B) and by slope-area measurements at 2,070 and 3,280 fi3/s
<br />(58.6 and 92.9 m3/s). Discharge Sept, 10-13, 17. 18 estimated on basis of normal
<br />recession.
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<br />(581 09379030. Black Mountain Wash near Chinle, Ariz.
<br />
<br />(Crest-stage station)
<br />Location. --Lat 36020'00" long 109037'25" A h C
<br />1 . () , . pac e ounty, at Navajo Highway 8
<br />nu 2 km south of Many Farms and 13 mi (21 km) north of Chinle. .
<br />Drainage area. --80. 7 mi2 (209.0 km2),
<br />
<br />Gage.height record. hCrest stages only. Altitude of gage is 5,200 ft (1,585 m), from
<br />topographic map.
<br />
<br />Maxima. --Sept. 4-18, 1970: Discharge. 9,880 ft3/s (280 m3/s) 0230 hours Sept. 7
<br />(gage height. 7.55 ft or 2.301 m).
<br />1950 to August 1970: Discharge, 3,280 ft3/s (92,9 m3/s) Aug. 1, 1964 (gage
<br />height, 6.32 fi (1. 926 m). from floodmark).
<br />
<br />Discharge :e.cord, --Stage-discharge relation defined by theoretical rating developed
<br />on the dlgltal computer above 700 fi3/s (20 m3/s) and by estimates and computations
<br />of now through culverts below 700 fi3/s (20 m3/s).
<br />
<br />~,--Sept. 4-18. 1970: Discharge, 640 ft3/s (18. 1 m3/a) Se t 5 ( a e hei ht
<br />5.46 fi or 1.664 m. from gage; 5.65 ft or 1. 722 m, from high-:~ter ;r~file) g ,
<br />.1963 to August 1970: Discharge, 1,560 ft3/s (44.2 m3/a) Aug 1 1968 ( .
<br />heIght. 8. 14 ft or 2.481 m). ., gage
<br />
<br />Day
<br />Sept. 4
<br />5
<br />6
<br />7
<br />8
<br />
<br />Mean discharge, in cubic feet per second,
<br />Discharge Day Discharge
<br />3, 0 Sept. 9 42
<br />433 10 30
<br />435 11 20
<br />4.070 12 10
<br />231 13 5.0
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<br />1970
<br />
<br />Day
<br />Sept. 14
<br />15
<br />16
<br />17
<br />18
<br />
<br />Discharge
<br />68
<br />290
<br />74
<br />30
<br />15
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<br />Gage height. in feet, and discharge. in cubic feet per second, at indicated time, 1970
<br />
<br />Hour Gage Discharge Hour Gage Discharge Hour Gage Discharj
<br /> height height height
<br />Sept. 4 Sept. 6*-Con. Sept. 8*-Con,
<br />2400 2.03 3 2100 3. 88 483 0800 3,00 175
<br />Sept. 5' 2300 4. 02 569 1200 2.85 108
<br />0700 2.04 3 2400 4.40 850 1600 2,73 70
<br />0900 2,15 8 Sept. 7' 2000 2.68 62
<br />1000 2.52 43 0100 6.45 4,780 2400 2.67 59
<br />1100 4.20 695 r 0200 7. 45 9,050 Sept. 14'
<br />1200 3.93 513 0230 7.55 9,880 0400 2.92 140
<br />1300 4.95 1,420 0400 7.50 9,300 1200 2.72 68
<br />1500 4,55 975 0600 7.14 7,500 2400 2.55 40
<br />1600 4. 66 1.080 0800 6.78 6.020 Sept. 15'
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