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Canal Treatment Calendar
Public Notice:
The Columbia Irrigation District applies aquatic herbicides and algaecides to the entire irrigation canal system in accordance with the Washington State Department of Ecology Irrigation System Aquatic Weed Control General Permit. The purpose is to minimize aquatic weed and algae growth to maintain unrestricted water flow within the delivery system. Products used will be Cascade (Dipotassium Salt of Endothall), Nautique (Copper Ethylenediamine Complex and Copper Triethanolamine Complex), Captain and Captain XTR (Copper Ethanolamine Complex), Copper Sulfate Crystals (Copper Sulfate Pentahydrate), Green Clean Pro (Sodium Carbonate Peroxyhydrate), Sonar H4C (Fluridone) and Sonar A.S. (Fluridone).
The treatment sites will be at various sites along our canal starting at Wanawish Dam, West Richland. Waters within the Columbia Irrigation District’s delivery system shall be used for irrigation purposes only.
MC- Main Canal
L1- Lateral 1 Canal
L2- Lateral 2 Canal
** Canals receive treated water from Main Canal
Treatment(s)
Aquatic Pesticides:
Endothall- Herbicide and/or Algeacide
Copper- Copper Based Herbicide and/or Algeacide
Sodium Carbonate Peroxyhydrate (SCP) - Algeacide
Fluridone- Herbicide
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