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<br />particularly along the Front Range and in the Dakotas. <br /> <br />i <br /> <br />A cold front moving eastward through the District generated more <br />widespread thunderstorm activity and flash flooding by July 21.t. Rainfall amounts <br />of 3 to 6 inches were reported near Kimball, Nebraska, causing Lodgepole Creek to <br />flood near Dix, Nebraska. Five to 7 inches of rain fell near Ord, Nebraska, causing <br />flooding on tributaries to the North Loup River. Stages on the Nishnabotna River <br />rose back above flood stage after 5 inches of rain fell in the West Nishnabotna <br />River basin. By July 23'. a nearly stationary front across the high plains generated <br />thunderstorms which caused flooding on Bear Butte Creek near Sturgis, South <br />Dakota, and lowland flooding in parts of northeast Colorado and the Nebraska <br />Panhandle. <br /> <br />Denver became the target of the heavy rain on the 25"', as moisture surged <br />northward into the District ahead of an upper-level storm system. As much as 5,6 <br />inches fell in the city, which caused widespread flooding on urban drainages. From <br />4 to 8 inches were reported in parts of south central South Dakota, resulting in high <br />water on the White River and its tributaries. <br /> <br />July ended with considerable thunderstorm activity, but little additional flash <br />flooding, Minor stream flooding was reported in southeast Nebraska and southwest <br />Iowa as up to 5 inches of rain fell from Nebraska City, Nebraska, to Hamburg, <br />Iowa, on July 30th. <br /> <br />lc.) Nishnabotna River Flood of June 14-19, 1998 <br /> <br />Heavy rains occurred over the Nishnabotna River basin on Sunday, June 14, <br />1998. These rains followed two weeks of wet and relatively cool conditions that <br />had saturated basin soils. At Atlantic, Iowa, the total rainfall amount reported of <br />13.2 inches exceeded the all time record for the state of Iowa for the amount of <br />rain reported during a 24-hour period. A large area of 8 to 10 inch rainfalls <br />occurred over the Nishnabotna basin with the heaviest rainfall centered over the <br />East Nishnabotna basin. <br /> <br />, <br /> <br />Water Control staff working Sunday morning checked the radar and <br />monitored the storm as it was occurring. The Chiefs of Water Control and <br />Emergency Management were notified and additional staff were called in to assess <br />the situation. About 4 pm Sunday, June 14, the National Weather Service INWS) <br />issued a flood warning for the East Nishnabotna River from Elliott to Riverton, Iowa. <br />At 4:30 pm the NWS reissued the flood warning for the East Nishnabotna and <br />extended it to include the Nishnabotna River at Hamburg. At that time, the East <br />Nishnabotna River at Red Oak was forecasted to crest at 27.9 feet on Tuesday <br />morning, June 16, and the Nishnabotna River at Hamburg was forecasted to crest <br /> <br />~ <br /> <br />17 <br />