Canal Velocity Indexing - ITRC

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Canal Velocity Indexing at Colorado River Indian Tribes (CRIT) Irrigation Project in Parker, Arizona using the SonTek Argonaut SL

	ITRC Report No.	P 03-001
	Web Address	http://www.itrc.org/papers/canalvelocity/canalvelocity.pdf
	Length	9 pages
	Authors	Stuart W. Styles, Mike Niblack, and Beau Freeman
	Presented	The Irrigation Association for the November 18-20, 2003 24th Annual International Irrigation Show, San Diego, CA.

Summary

An index velocity rating was developed for a SonTek/YSI Argonaut Side-Looking (SL) ultrasonic Doppler flow meter installed in the Main Canal of the Colorado River Indian Tribes (CRIT) Irrigation Project in Parker, Arizona. Velocity data collected concurrently with the ultrasonic flow meter and conventional current meter were compared using linear regression techniques. The rating equation for this installation provides a reasonably accurate means of computing discharge. The procedure used in the evaluation included multiple measurements over a range of low, medium, and high flows. This approach verified the validity of discharge measurement through analysis of coefficients of determination and by comparison of discharges computed from the ratings to measured discharges.

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