The South Columbia Basin Irrigation District will begin filling the Potholes Canal on February 28, 2022. Deliveries from the Potholes Canal will begin on March 16, 2022 to the Mattawa area, Blocks 1, 2 and 3, and the Potholes area of Franklin County. Deliveries to Block 18 of the East Low Canal system are scheduled to begin on March 30, 2022.

Irrigation deliveries will be dependent on demand in the individual lateral systems.

In locations where pumping plants are required for irrigation deliveries, startup dates will depend on adequate orders to start the pumping plants.

Landowners will need to contact their Watermaster office for specific delivery dates and water availability.