Technique for Estimating Depth of Floods in Tennessee

U.S. Geological Survey, Water-Resources Investigations Report 83-4050

by C.R. Gamble

This report is available as a pdf below


Estimates of flood depths are needed for the design of roadways across flood plains and for other types of construction along streams. Equations for estimating flood depths in Tennessee were derived using data for 150 gaging stations . The equations are based on drainage basin size and can be used to estimate depths of the 10-year and 100-year floods for four hydrologic areas . Estimates of depths of floods having recurrence intervals falling between 10 and 100 years can be made graphically . Standard errors range from 22 to 30 percent for the 10-year depth equations and from 23 to 30 percent for the 100-year depth equations .

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