Floods of July 19-25, 1999, in the Wapsipinicon and Cedar River Basins, Northeast Iowa

Severe flooding occurred during July 19-25, 1999, in the Wapsipinicon and Cedar River Basins following two thunderstorms over northeast Iowa. During July 18-19, as much as 6 inches of rainfall was centered over Cerro Gordo, Floyd, Mitchell, and Worth Counties. During July 20-21, a second storm occurred in which an additional rainfall of as much as 8 inches was centered over Chickasaw and Floyd Counties. The cumulative effect of the storms produced floods with new maximum peak discharges at the following streamflow-gaging stations: Wapsipinicon River near Tripoli, 19,400 cubic feet per second; Cedar River at Charles City, 31,200 cubic feet per second (recurrence interval about 90 years); Cedar River at Janesville, 42,200 cubic feet per second (recurrence interval about 80 years); and Flood Creek near Powersville, 19,000 cubic feet per second. Profiles of flood elevations for the July 1999 flood are presented in this report for selected reaches along the Wapsipinicon, Cedar, and Shell Rock Rivers and along Flood Creek. Information about the river basins, rain storms, and flooding are presented along with information on temporary benchmarks and reference points in the Wapsipinicon and Cedar River Basins.

  • Record URL:
  • Corporate Authors:

    U.S. Geological Survey

    Iowa Water Science Center
    400 S Clinton St Suite 269
    Iowa City, Iowa  United States  52244-1230

    Iowa Department of Transportation

    800 Lincoln Way
    Ames, IA  United States  50010

    Iowa Highway Research Board

    800 Lincoln Way
    Ames, IA  United States  50010
  • Authors:
    • Ballew, Jan L
    • Eash, David A
  • Publication Date: 2000

Language

  • English

Media Info

  • Media Type: Digital/other
  • Features: Appendices; Figures; Maps; References; Tables;
  • Pagination: 50p

Subject/Index Terms

Filing Info

  • Accession Number: 01575748
  • Record Type: Publication
  • Report/Paper Numbers: IHRB Project HR-140, Open-File Report 01-13
  • Files: TRIS, ATRI, STATEDOT
  • Created Date: Sep 8 2015 2:36PM