thumbnail

Floods on small streams in North Carolina, probable magnitude and frequency

Circular 517

Prepared in cooperation with the North Carolina State Highway Commission
By:

Links

Abstract

The magnitude and frequency of floods are defined regionally for small streams (drainage area, 1 to 150 sq mi) in North Carolina. Composite frequency curves for each of two regions relate the magnitude of the annual flood, in ratio to the mean annual flood, to recurrence intervals of 1.1 to 50 years. In North Carolina, the mean annual flood (Q2.33) is related to drainage area (A) by the following equation: Q2. 33 = GA0.66, where G, the geographic factor, is the product of a statewide coefficient (US) times a correction which reflects differences in basin characteristics. Isograms of the G factor covering the State are presented.

Study Area

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Floods on small streams in North Carolina, probable magnitude and frequency
Series title:
Circular
Series number:
517
Year Published:
1965
Language:
ENGLISH
Publisher:
[U.S. Geological Survey],
Description:
iii, 7 p.
Country:
United States
State:
North Carolina