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Magnitude and frequency of flood volumes for urban watersheds in Leon County, Florida

January 1, 1994

Techniques are provided for estimating runoff magnitudes for urban-flow streams in Leon County, Florida, for recurrence intervals of 2, 5, 10, 25, 50, 100, and 500 years. Synthetic runoff volumes were generated by using a calibrated lumped-parameter rainfall-runoff model, pan evaporation data from Milton, Florida, and long-term unit rainfall records from Thomasville-Coolidge, Georgia, and Pensacola, Florida. The synthetic runoff volumes were used to develop station runoff-frequency relations which were used in multiple linear regression analyses to derive regional equations relating runoff to basin characteristics. The significant basin characteristic was impervious area. The average standard error of regression was + or - 16 percent for all recurrence intervals except the 2-year, + or - 18 percent and the 500-year + or - 17 percent. (USGS)

Citation Information

Publication Year 1984
Title Magnitude and frequency of flood volumes for urban watersheds in Leon County, Florida
DOI 10.3133/wri844233
Authors M.A. Franklin
Publication Type Report
Publication Subtype USGS Numbered Series
Series Title Water-Resources Investigations Report
Series Number 84-4233
Index ID wri844233
Record Source USGS Publications Warehouse
USGS Organization