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<br />E96
<br />
<br />FLOODS OF 1965 IN THE UNITED STATES
<br />
<br />15.0
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<br />0.2
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<br />Plotted points show tnaximum intensiti~~ .,
<br />~~..
<br />during storms as indicated below: ~ t0~~
<br />. April27, 1964 I'-...
<br />o Sentember' 29-30 1965
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<br />
<br />10.0
<br />8.0
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<br />6,0
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<br />~4.0
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<br />52.0
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<br />i: 1.0
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<br />0.1
<br />5
<br />
<br />10 15 20 30 40 60
<br />MINUTES
<br />
<br />2
<br />
<br />3 4 6 8 12 18 24
<br />HOURS
<br />
<br />DURATION OF RAINFALL
<br />
<br />FIGURE 47.-Relation of rainfall intensity, duration, and frequency at Mobile.
<br />Ala. (atter U.S. Weather Bureau).
<br />
<br />Severe flooding during the storm period was confined to a narrow
<br />band along the eastern edge of Mobile County directly across down-
<br />town Mobile that extended north-northeastward to the Little River
<br />basin, Heavy runoff occurred from all areas in this band but strealllii
<br />,
<br />to. the north, east, and west of the band had only minor flooding, Little
<br />R,ver at State Highway 59 near the town of Little River (sta. 5) had
<br />a peak discharge of 28,600 cfs on October 1; this peak discharge is
<br />about 1.6 times the 50-year flood at the site. Peak discharges at gaging
<br />stations in and near the storm area are listed in table 34. At Montlimar
<br />Creek at U.S. Highway 90 at Mobile (sta. 8), a large volume of runoff
<br />occurred on September 30 (fig. 48), but the peak discharge of 2,500 cis
<br />was much less than the maximum peak discharge of 4,000 cis on
<br />April 27, 1964. Figure 48 shows the smaller volume of flow related to
<br />the higher peak discharge in April 1964 associated with an intense
<br />rainfall of about 5 inches in a short period of time falling on a basin
<br />that had been saturated in the preceding 48 hours,
<br />
<br />SUNDMARY OF FLOODS
<br />
<br />E97
<br />
<br />4000
<br />
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<br />J yAPril 27, 1964
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<br />ept. 30, 1965
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<br />3000
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<br />o 2000
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<br />15
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<br />1000
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<br />
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<br />2400
<br />
<br />0600
<br />
<br />lSOO
<br />
<br />1200
<br />
<br />2400
<br />
<br />Fl;GUBE 48.-Discharge for floods of April 27, 1964, and September 30, 1965. on
<br />Montlimar Creek a.t U.S. Highway 90, at Mobile, Ala.
<br />
<br />The Weather Bureau at Mobile estimated flood damage in Mobile
<br />County to be about $25 million. About $2 million of this was crop
<br />damage mainly to soybeans, corn, and cotton. The heaviest runoff in
<br />Mobile was during the morning rush hours, and many motorists were
<br />stranded. Water 2-3 feet deep flowed through many of the downtown
<br />streets, No lives were. lost during the flood period, but hundreds of
<br />people were evacuated from low-lying areas. Flood damage in Baldwin
<br />and Monroe Counties was relatively light because the path of the storm
<br />was over an uninhabitated area. Streams ov~rtopped several roads in
<br />the aroo., and one bridge was damaged in Monroe County.
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