West Extension Irrigation District will be applying the aquatic herbicide “Argos” (liquid chelated copper) in its main canal in 3 treatments:
Wednesday, August 26, 2020 Upper Canal (Phase 1 Inlet to Division)
Thursday, August 27, 2020 Middle Canal (Division to I-84)
Friday, August 28, 2020 Boardman Canal (siphon to end)
Treatments will start at approximately 7 am and last for 6 hours.
Argos targets algae and is applied at the rate of 1 ppm for a 6 hour set. This low rate of application means there are no holding restrictions on the water. This compares to the Copper Sulfate Crystals which are applied at a 5-6 ppm rate and have lengthy holding time.
Please call the office with any questions at 541-922-3814.