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Factors affecting accuracy of slope-area discharge determination of the September 1992 flood in Raven Fork, Western North Carolina

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Abstract

For the flood of September 10, 1992, in Raven Fork, Swain County, North Carolina, a peak discharge of 460 cubic meters per second was computed by using the slope-area method. Accuracy of this determination depends on suitability of the selected reach and, in particular, selection of Manning's roughness coefficients, interpretation of the high-water marks, number and placement of cross sections, presence of large expansions or contractions, state-of-flow transitions, and magnitude of the change in water-surface elevation. Some of these factors can contribute to greater uncertainties for measurements in steep mountain streams than for measurements in streams with flatter gradients.

Additional publication details

Publication type Conference Paper
Publication Subtype Conference Paper
Title Factors affecting accuracy of slope-area discharge determination of the September 1992 flood in Raven Fork, Western North Carolina
ISBN 0784400377
Issue pt 1
Year Published 1994
Language English
Publisher Publ by ASCE
Publisher location New York, NY, United States
Contributing office(s) South Atlantic Water Science Center
Larger Work Title Proceedings - National Conference on Hydraulic Engineering
First page 645
Last page 649
Conference Title Proceedings of the 1994 ASCE National Conference on Hydraulic Engineering
Conference Location Buffalo, NY, USA
Conference Date 1 August 1994 through 5 August 1994
Country United States
State North Carolina
County Swain County
City Raven Fork
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