Flood profiles for Peace River, south-central Florida

This report presents flood heights and profiles for a 70-mile reach of Peace River from Bartow to Arcadia, Fla. The flood heights were calculated using the U.S. Geological Survey step-backwater model. Profiles were prepared for floods having expected recurrence intervals of 2, 2.33, 5, 10, 25, 50, 100, 200, and 500 years. Flood-peak discharges used in the step-backwater analyses were determined by weighting stream gaging-station data with data from a regional analysis. Land-surface elevation data for 183 cross sections - including values of Manning 's roughness coefficient - also were used in the backwater analysis. Flood height data are generally accurate to + or - 0.5 foot. They indicate that most roads and two bridges in the study reach will be inundated by some of the floods evaluated. (Woodard-USGS)