Measured Seepage of the Main Canal of Brownsville Irrigation District.

摘要

This report summarizes the results of a seepage loss test conducted on a segment of the Main Canal of the Brownsville Irrigation District, June 17 - 19, 2003. The Main Canal test segment is at the southwest tip of the district and extends from Milpa Verde Road to just down stream of the districts river pumping plant, terminating at the check gate. The test segment is an unlined canal, approximately 1,502 ft long, and varies from 36 to 43 feet in water-span (width). Seepage was measured at 3.14 gal/ft2/day. Annual water loss is estimated at 794.6 ac-ft/mi/yr based on an in-service period of 365 days per year.