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<br />FLOODS OF SEPT. '970 IN ARIZ., UTAH, COLO., AND N. MEX.
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<br />STATION DATA-GILA RIVER BASIN
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<br />99
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<br />(76) 09484500. Tanque Verde Creek at Tucson, Ariz.
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<br />(Crest-stage station)
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<br />(79) 09487000. Brawley Wash near Three Points, Ariz.
<br />(Crest-stage station)
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<br />Location. --Lat 32015'57", long 110050'27". in SEtSEt sec. 30. T. 13 S., R. 15 E., Pima
<br />County, at Sabino Canyon Road. 1. 0 mt (1. 6 km) downstream from Sabino Creek, and
<br />1. 25 mi (2.0 Ion) northeast of Tucson city limits.
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<br />Drainage area. --221 mi2 (572 km2).
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<br />Location. ~-Lat 32004'32", long 111020'15", in SEt sec. 32, T.15 S., R. 10 E.. Pima
<br />County. at State Highway 86, 1. 5 Ini (2.4 km) west of Three Points (Robles Junction),
<br />and 23 roi (37 km) west of Tucson.
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<br />Drainaj;(e area. ~-776 mi2 (2,010 km2).
<br />Gage-height record. ~-Crest stages only. Datum of gage is 2,532.85 it (772. 013 rn)
<br />above mean sea level (levels by U. S. Coast and Geodetic Survey).
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<br />Gage-height record. --Crest stages only, Datum of gage is 2,464,33 ft (751. 128 m)
<br />above mean sea level (from Pima County bench mark),
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<br />Discharge record. --Stage-discharge relation defined by current-meter measureme~ts.
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<br />Discharge record, --Stage-discharge relation undefined ex<::ept for slope-area measure-
<br />ment of peak flow,
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<br />Maxima, --Sept. 4-10, 1970: Discharge, 7,340 ft3/s (208 m3/s) Sept, 6 (gage height,
<br />----s:-5'7ft or 2,003 m, from gage; 8,52 It or 1. 987 m, from high-water profile).
<br />1940 to August 1970: Discharge, 12,200 ft3!s (346 m3/s) Dec. 22, 1965 (gage
<br />height. 7.89 ft or 2.405 m).
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<br />Maxima. --Sept, 4-10, 1970: Discharge, 13,200 ft3/s (374 m3/a) Sept. 4 (gage height,
<br />----r5:'"Bft or 4. 82 rn, from high-water profile).
<br />1962 to August 1970: Discharge, 13,000 ft3/s (368 m3/s) Sept, 26, 1962'igage
<br />height, 12,75 ft or 3. 886 m).
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<br />(77) Bailey Wash near Sasabe, Ariz.
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<br />(Miscellaneous site)
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<br />(80) Brawley Wash at Mile Wide Road near Tucson, Ariz,
<br />(Miscellaneous site)
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<br />Location. --Lat 31036'10", long 111031'23", in SEtNEt see, 16, T. 21 S., R,8 E., Pima
<br />County, just upstream from State Highway 286, 8 mi (13 km) north of Sasabe.
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<br />Drainage area. ~-30. 4 mi2 (78. 7 km2).
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<br />Maximum. --Sept. 4-10, 1970: Discharge, 12,900 ft3/s (365 m3!s) Sept. 4, from
<br />Slope-area measurement of peak flow.
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<br />Location, --Lat 32015', long 111015', in sec. 32, T. 13 S., R. 11 E., Pima County,
<br />2,000 ft (610 m' downstream from Mile Wide Road, and 17 mi (27 km) west of
<br />Tucson,
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<br />(78) 09486800, Altar Wash near Three Points, Ariz.
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<br />Drainage area. ~-1, 077 mi2 (2, 789 kJn2).
<br />Maxima. --Sept. 4-20, 2970: Discharge, 6,140 ft3/s (174 m3/s) Sept. 4, from slope-
<br />----ar:ea measurement of peak flow.
<br />1962 to August 1970: Discharge, 38,800 ft3/s (1, 100 m3/s) Sept. 26, 1962,
<br />slope-area measurement,
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<br />Location. --Lat 31050'10", long 111024'11", in SEiNEt sec,27, T.18 S., R.9 E" Pima
<br />County, on downstream side of right abutment of bridge on State Highway 286, O. 1 mi
<br />(0.2 krn) downstream from Chiltipines Wash, and 18 mi (29 km) south of Three Points.
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<br />Drainage area. --463 mi2 (1,199 km2).
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<br />(81) 09487250. Los Robles Wa$h near Marana, Ariz.
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<br />Gage-height record. --Water'-stage recorder graph except Sept. 4-30. Gage-height record
<br />reconstructed on basis of normal recession. Altitude of gage is 2,980 ft (908 m). from
<br />topographic map.
<br />
<br />(Crest-stage station)
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<br />Discharge record, -~Stage.discharge relation defined by current-meter measurements
<br />below 11,000 ft3/ s (310 m3/ s) and extended above on basis of velocity-area deter-
<br />mination of peak flow.
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<br />Location. hLat 32026116", long 111018'13", in SEtSEi sec. 27, T. 11 S., R. 10 E., Pima
<br />County, at Trico Road O. 75 rni (1, 2 km) downstream from confluence of Brawley Wash
<br />and China Draw, 3 mi (5 km) upstream from Blanco Wash, and 5 rni (8 km) southwest
<br />of Marana.
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<br />Maxima. --Sept. 2-10, 1970: Discharge, 22,000 ft3/s (623 m3/s) 1230 hours Sept, 4
<br />(gage height, 13,85 ft or 4,221 m).
<br />1966 to August 1970: Discharge, 10,700 It3/s (303 O131s) Aug. 10, 1966 {gage
<br />height. 10,40 ft or 3. 170 m). from rating curve extended above 1,700 ft3/s (48 m3/s).
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<br />Drainage area. ~-l, 170 mi2 (3,030 km2).
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<br />Gar;-height record. --Flood hydrograph recorder graph, Datum of gage is L 907, 76 ft
<br />581, 485 m) above mean sea level (levels by U. S. Coast and Geodetic Survey).
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<br /> Mean discharge, in cubic feet per second, '1970
<br />Day Discharge Day Discharge Day Discharge
<br />Sept, 2 0 Sept. 5 130 Sept. , 200
<br /> 3 426 6 15 9 50
<br /> 4 5,460 7 0 10 '0
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<br />Discharge record. --Stage~diBcharge relation defined by current-meter measurements.
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<br />~,--Sept, 4-10, 1970: Discharge, 4,490 ft3/s (127 m3/s) Sept. 5.(gage height,
<br />9.27 ft or 2.825 m, at gage).
<br />1962 to August 1970: Discharge, 32,000 ft3/s (906 m3/s) Sept. 26, 1962, from
<br />slope-area sites upstream and downstream from this site.
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