Herbicide Treatment July 13, 2023

HID will be treating the A-Line Canal with Captain aquatic herbicide on Thursday, July 13, 2023.

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What is the grassy stuff in our screens?

It is pond weed! Commonly, Sago Pondweed which is an aquatic invasive weed that is widely found in the United States, South America, Europe, Africa and Japan. Like many of the other Districts the 17 western states, HID uses Copper Sulfate products and mechanical methods to treat and remove pond weed.

Sago pond weed thrives and grows quickly (4” – 6” per day) on hot sunny days. Its reproduction cycle is most active June – August. HID screens the head of every piped lateral, treats with herbicides weekly and removes the pond weed with machines. Our field crew is doing all they can to keep up with this nuisance. They work daily to treat canals, clean screens, repair & maintain infrastructure, and maintain a safe level of water in our canals.

There is a restricted-use product available called Acrolien, brand name Magnicide H, that can be used to treat pond weed and algae but is costs about three times as much as copper sulfate products and it is toxic to humans, fish, animals and wildlife. Due to the high toxicity levels of Acrolien, HID opts to use more eco-friendly products.

For more information you can access this report on Aquatic Invasive Species prepared by Portland State University.
https://agsci.oregonstate.edu/sites/agscid7/files/ag-ed-sci/sytsma_aquatic_invasive_weeds.pdf

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Herbicide Treatment

HID will be treating the A-Line Canal with Captain & Nautique on Friday, June 30, 2023. Copper based herbicides used for treating algae & pond weed.

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R-Line Repair Complete

The R-Line Canal Repair has been completed. The line will charge this evening and will be turned up in the morning.

The Z-Line comes off of the R-Line Canal and will be turned on in the morning.

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R-Line & Z-Line will be shut down for Maintenance

The R-Line Canal and Z-Line Pipeline will be shut down tomorrow June 27, 2023. Repairs will take approximately two days. WE hope to have both lines up by Thursday, June 29, 2023. We apologize for any inconvenience.

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Aquatic Treatment

HID will be treating the A-Line Canal with Captain on Wednesday, June 21, 2023. Captain is an herbicide used for treating algae.

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Aquatic Treatment

HID will be treating the A-Line with Nautique tomorrow, June 13, 2023.

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Notice of Intent to Award

Project: Maxwell Pump Station and Pipeline Project

Awarding Entity: Hermiston Irrigation District

County: Umatilla

Construction Bid Opening Date: May 18, 2023

Award Date: May 25, 2023

Contractor: C&E Trenching

Bid Amount: $2,075,350

Annette Kirkpatrick

District Manager

Hermiston Irrigation District

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Herbicide/Algaecide Treatments

HID will be treating the Maxwell Canal with Nautique on Tuesday, May 30, 2023 and we will be treating the A-Line Canal with Nautique on Wednesday, May 31, 2023. These are both liquid copper herbicide products.

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The HID office will be closed between 1:30 pm and 4:00 pm tomorrow, May 18, 2023.

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