Journal
JOURNAL OF THE AMERICAN WATER RESOURCES ASSOCIATION
Volume 39, Issue 4, Pages 861-871Publisher
WILEY
DOI: 10.1111/j.1752-1688.2003.tb04411.x
Keywords
bankfull; environmental engineering; flood frequency; partial duration series; bankfull hydraulic geometry relationships; surface water hydrology
Ask authors/readers for more resources
Bankfull hydraulic geometry relationships relate stream channel geometry to watershed size for specific physiographic regions. This paper presents bankfull hydraulic geometry relationships and recurrence intervals for the Southeastern Plain ecoregion and the flatwoods subtype of the Middle Atlantic Coastal Plain ecoregion found within North Carolina's Coastal Plain physiographic province. Cross-sectional and longitudinal survey data from gaged and ungaged streams were used to compute channel dimension and profile information. Power functions were developed, relating drainage area to bankfull discharge, cross-sectional area, width, and mean depth. Recurrence intervals of bankfull events were estimated from gaged streams using both a Log-Pearson Type III distribution of peak annual discharge and a partial-duration series of average daily discharge. Results from both methods indicate that average bankfull recurrence intervals for the study area are below one year. Determinations of recurrence intervals by the Log-Pearson Type III distribution were for the most part inconclusive (less than one year), while a partial duration series estimated a 0.19 year average, ranging from 0.11 to 0.31 years.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available