The objective of this study was the analysis of available rainfall end
runoff data for selected watersheds in the state of Minnesota to assist in
the evaluation of peak: rates of runoff tor design purposes.
Six watersheds were selected tor study. Rainfa1l and runoff data were
analyzed for 51 flood events in five of the six watersheds. An optimization
program prepared by the U.S. Army Corps of Engineers Hydrologic Engineering
Center was used to optimize nine variables associated with the watersheds,
develop characteristic unit hydrographs, and evaluate loss rates tor the
watershed in terms of the mathematical model represented by the optimization
Data on annual maximum floods as well as maximum summer floods were
plotted on log-probability paper and theoretical flood-frequency curves determined
q, the log.Pearson Type III distribution.
Approximately 200 figures relating to the rainfall-runoff data and
analysis thereof have been included in the Appendices for future use. This
might involve further work with the same program or possibly other programs.
A limited number of copies of the Appendices has been prepared for reference
purposes; other copies of the report were prepared without appendices.
Office of Water Resources Research, Water Resources Research Center
Bowers, C. Edward; Pabst, Arthur.
Review and Analysis of Rainfall and Runoff Data for Selected Watersheds in Minnesota.
St. Anthony Falls Hydraulic Laboratory.
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