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<br />FLOODS OF SEPT. 1970 IN ARIZ., UTAH, COLO., AND N. MEX.
<br />
<br />(140) 09516500. Hassayampa River near Morristown, Ariz.
<br />
<br />(Gaging station, discontinued 1947; crest-stage station)
<br />
<br />Location. --Lat 33053'06", long 112"39'41", in swtSEt sec. 3, T. 6 N.. R.4 W..
<br />Maricopa County, 3.0 roi (5.0 km) northwest of Morristown, and 7 roi (11 kIn) south-
<br />east of Wickenburg.
<br />Draina~ area. --774 mi2 (2,005 km2).
<br />
<br />Ga~e-heij{ht record. --Crest stages only. Datum of gage is 1,831.16 it (558. 138 m)
<br />above mean sea level. datum of 1965.
<br />
<br />Dischar~e record. --Stage-discharge relation defined by rating based on estimated flow
<br />and Slope-area measurements.
<br />
<br />~. --Sept. 4-10, 1970: Discharge, 47,500 ft3/a (1,350 m3/s) Sept. 5 (gage
<br />height, 19.0 ft or 5. 79 m. from high-water profile), from slope-area measurement
<br />of peak now.
<br />1939-47, 1954, 1956, 1964 to August 1970: Discharge, 9,280 n3/s (263 m3/s)
<br />Sept. 3, 1965 (gage height, 11. 6 it or 3. 54 m).
<br />
<br />(141) 09517000. Hassayampa River near Arlington. Ariz.
<br />
<br />(Crest-stage station)
<br />
<br />Location. --Lat 33020'50", long 112043'30", in Nwt sec. 13, T.1 S., R.5 W., Maricopa
<br />County, at former U.S. Highway 80, 1. 8 mi (2. 9 kIn) upstream from mouth, and
<br />2.8 mi (4. 5 kIn) northeast of Arlington.
<br />
<br />.
<br />
<br />Draina~e area. --1. 470 mi2 (3,807 km2).
<br />
<br />Gaj{e-heil{ht record. --Crest-stages only. Datum of gage is 831. 91 it (253.566 m) above
<br />mean sea level (levels by Arizona Highway Department).
<br />
<br />Discharge record. --Stage-discharge relation poorly defined by current-meter measure-
<br />ments below 1,700 ft3/s (48 m3/s) and extended above on basis of Slope-area measure-
<br />ments.
<br />
<br />Maxima. --Sept. 4-10, 1970: Discharge, 39,000 (t3/s (1, 100 m3/s) Sept. 5 (gage height,
<br />----a:4O ft or 2.560 m, high-water mark in gage' well). from slope-area measurement of
<br />peak flaw.
<br />1961 to August 1970: Discharge, 6,500 ft3/a (184 m3/s) Aug. 14, 1964 (gage
<br />height. 6.05 ft or 1. 844 mI.
<br />
<br />REFERENCES CITED
<br />
<br />Attebery, J. E., 1971, Flood damage report, storm and flood of September 4-6, 1970: City of
<br />Phoenix Eng. Dept. Rept., 20 p.
<br />Follansbee, Robert, and Sawyer, L. R., 1948, Floods in Colorado: U.S. Oeo!. Survey
<br />Water-Supply Paper 997. 151 p.
<br />Green, C. R.. and Sellers, W. D., eds., 1964, Arizonac1imate: Tucson, Arizona Univ. Press, 503
<br />p.
<br />Kangieser, P. C, 1972. Unusually heavy 24-hour rainfall at Workman Creek I. Arizona:
<br />Monthly Weather Rev., v. 100. no. 3, p. 206-207.
<br />Leopold, L. B., and Snyder. C. T., 1951, Alluvial fills near Gallup, New Mexico: U.S. Oeo!.
<br />Survey Water-Supply Paper IIIO-A, 19 p.
<br />Newell, F. H., 1891, Hydrography of the arid regions: U.S. Geol. Survey 12th Ann. Rept., pt. 2,
<br />p. 213-361.
<br />
<br />REFERENCES CITED
<br />
<br />13]
<br />
<br />Patterson, J. L., and Somers, W. P., 1966. Magnitude and frequency of floods in the United
<br />States-Part 9, Colorado River basin: U.s. Geo!. SurveyWater-S-upply Paper 1683. 475 p.
<br />Thorud, D. B., and Ffolliott, P. F., 1973. A comprehensive analysis of a major storm and
<br />associated flooding in Arizona: Ariz. Univ.. Agr. Expt. Sta. Tech. Bull. 202, 30 p.
<br />U.S. Army Corps of Engineers, 1970, Office report on the September 1970 floods. upper
<br />Colorado River basin. Four Corners area, Arizona, Colorado, New Mexico, Utah: U.S"
<br />Army Engineers District, Sacramento, 25 p.
<br />U.S. Environmental Data Service, 1970a. Climatological data, Arizona, September 1970: U.S.
<br />Dept. Commerce. v. 74. no. 9, p. 159-181.
<br />_1970b. Climatological data, Utah. September 1970: U.S. Dept. Commerce, v. 72. no. 9,
<br />p. 141-155.
<br />_1970c, Climatological data, Colorado, September 1970: U.S. Dept. Commerce. v. 75,
<br />no. 9, p. 143-161.
<br />_1971a, Climatological data. Arizona, December 1970: U.S. Dept. Commerce. v. 74. no.
<br />12, p. 215-233. '
<br />_1971b. Hourly precipitation data, Arizona, September 1970: U.S. Dept. Commerce, v.
<br />20. no. 9. 3 p.
<br />_197Ic, Hourly precipitation data, Colorado, September 1970: U.S. Dept. Commerce, v.
<br />20, no. 9. 7 p.
<br />U.S. National Oceanic and Atmospheric Administration. 197 :', Arizon~ floods of September 5
<br />and 6, 1970: U.S. Dept. Commerce Natural Disaster Survey Rept. 70-2, 39 p.
<br />U.S. Weather Bureau, 1967a. Arizona, IOO-year 24-hour precipitation: U.S. Dept. Commerce
<br />map.
<br />_1967b, Colorado, IOO-year 24-hour precipitation: U.S. Dept. Commerce map.
<br />_1968. Utah, 100-year 24-hour precipitation: U.S. Dept. Commerce map.
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