Magnitude and frequency of floods in small drainage basins in North Dakota

Water-Resources Investigations Report 19-75
Prepared in cooperation with the North Dakota State Highway Department



This report describes methods for estimating flood-peak discharges having 2- to 50-year recurrence intervals on North Dakota streams draining less than 100 square miles ( 259 square kilometres). For gaged sites, frequency estimates are provided directly. For ungaged sites, flood peaks are estimated from multiple-regression equations using drainage-area size and, in two regions, soil-infiltration index as estimating variables.  Nomographs provide simple solutions for the equations for flood-peak discharges having recurrence intervals of 10, 25, and 50 years. The methods described are not applicable to streams draining urban areas or basins affected by man-made regulation.  

Information is also provided on the maximum flood magnitude experienced.

Study Area

Additional publication details

Publication type Report
Publication Subtype USGS Numbered Series
Title Magnitude and frequency of floods in small drainage basins in North Dakota
Series title Water-Resources Investigations Report
Series number 19-75
DOI 10.3133/wri1975
Year Published 1975
Language English
Publisher U.S. Geological Survey
Contributing office(s) North Dakota Water Science Center, Dakota Water Science Center
Description Report: iv, 24 p.; 2 Plates: 23.94 x 17.17 inches and 23.84 x 17.07 inches
Country United States
State North Dakota
Online Only (Y/N) Y
Additional Online Files (Y/N) Y
Google Analytic Metrics Metrics page
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