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<br />7 <br /> <br /> <br />Thunderstorm-Induced Floods <br /> <br />Large and powerful thunderstorms begin occurring in Colorado during the last half of May. They <br />reach their peak in mid-July and taper off in occurrence into late August. These storms, depending on <br />duration, deposit the largest amounts of rainfall in the shortest periods of time. In May, most Colorado <br />streams are already swollen with runoff. Any abnormal increase in streamflow will usually precipitate a <br />flood event. <br /> <br />A thunderstorm-induced flood event occurred at Rifle on Rifle and Government Creeks. As is <br />usually the case, the highest flows in the shortest period of time occurred when an estimated l25-year <br />flood discharge impacted Rifle as the result of an intense late day thunderstorm on May 15-16, 1993. To <br />date, an estimated $150,00 - $200,000 in losses to structures and vehicles was sustained. <br /> <br /> <br />Looki"g e(/st from Rifle Creek (/mi 4th Street ill Rifle. CO <br />