KID put out this public notice yesterday:

The Kennewick Irrigation District is treating our canals this week to clear pond weed and algae that grow aggressively in hot weather. As the weed dies, it breaks loose and travels downstream to our weed screens. Our crews will continue to work 24-7 to maintain the canal flow. KID weed screens will catch large clumps of the debris, but smaller algae, which breaks loose from the pond weed, will be passing through the coarse weed screens. This will cause more plugged filters for the next three weeks.

Steve Woods

You can go to KID.org for instructional videos on how to clean your screens.

Steve Woods