West Extension Irrigation District will be applying the aquatic herbicide “Argos” (liquid chelated copper) in its main canal over 3 days::
Tuesday July 26, 2022 Upper Canal (Phase 1 Inlet (East of Power Line Road) to Division)
Wednesday July 27, 2022 Middle Canal (Division to I-84)
Thursday July 28, 2022 Boardman Canal (siphon to end)
Treatments will start at approximately 6 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.
The Relocation Canal will be treated with Copper Sulfate Crystals on Wednesday, July 27. There will be a holding time of 7 hours. The Division Street Pump Station will be down during the treatment, then turned back on in the afternoon.
Please call the office with any questions at 541-922-3814.