Summary

This paper summarizes the results of a performance evaluation using advanced hydroacoustic rating techniques in irrigation canal systems.  Standardized field-testing procedures and technical specifications for index velocity ratings have been developed for rating measurement locations using hydroacoustic flow meters.  Water managers and users of advanced electronic flow measuring devices can improve the cost-effectiveness, accuracy, and quality control of discharge records, even at sites with complex flow conditions, by observing these recommended guidelines. 

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