Excessive Rainfall and Tropical Storm in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce considerable, potentially life-threatening, flooding across the lower Mississippi River Valley and central Great Lakes region through tonight. Tropical Storm Arthur will move northeastward along the Texas coast today and then move inland over southwestern Louisiana by tonight. An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana. Read More >

Heavy rains of 8 to 12 inches that occurred on July 22-24 along and north of the Highway 20 corridor between Waterloo, IA and Dubuque, IA resulted in record flooding on the Maquoketa River and Lake Delhi (also called Hartwick Lake). The pressure from the record river flood levels were too much for an earthen berm on the south side of the Lake Delhi/Hartwick Lake Dam. It gave way shortly after 1 pm July 24.

48 Hour Rainfall Totals Ending ~7AM July 24

Hydrograph of the Maquoketa River Level at Manchester Highway 20

DVN RSS Feed

Excessive Rainfall and Tropical Storm in the South; Severe Thunderstorms in the Midwest

July 22-24, 2010 Heavy Rain and Flooding