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Floodflow effects on riparian vegetation in Arizona

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Abstract

A relation for estimating changes in the condition of riparian vegetation as a function of stream power was developed for stream channels in central Arizona. Flood and vegetation data were collected from 13 flows at 11 sites. Stream power was computed at cross sections and plotted against the average height of vegetation for each flow. The effect of the flow - no effect, little effect, laid over, or removed - on the riparian vegetation is related to stream power and vegetation height. As vegetation height increases, the magnitude of stream power needed to affect the vegetation also increases. Stream power of about 72 Newton-meters per second per meter squared is needed to lay over 1-meter-high vegetation, and stream power of about 580 Newton-meters per second per meter squared is needed to lay over 5.5-meter-high vegetation. This relation can be used to estimate vegetation conditions at the time of peak floodflow.

Suggested Citation

Phillips, J.V., Hjalmarson, H., 1994, Floodflow effects on riparian vegetation in Arizona, in Proceedings - National Conference on Hydraulic Engineering, no. pt 1, Buffalo, NY, USA, 1 August 1994 through 5 August 1994, p. 707-711.

Publication type Conference Paper
Publication Subtype Conference Paper
Title Floodflow effects on riparian vegetation in Arizona
ISBN 0784400377
Issue pt 1
Year Published 1994
Language English
Publisher Publ by ASCE
Publisher location New York, NY, United States
Larger Work Title Proceedings - National Conference on Hydraulic Engineering
First page 707
Last page 711
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
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