Pioneer Irrigation District is a non-profit irrigation district providing irrigation water to 34,000+ acres of land in parts of Canyon County and Western Ada County, Idaho.  Established in 1901, Pioneer is proud to be a part of the Treasure Valley's rich agricultural history and we are continually looking for the best ways to manage water needs now and into the future for both agricultural and residential irrigation uses.

For a map of Pioneer Irrigation District, please click here.


Pioneer Irrigation will begin turning water into the Lowline Canal and Highline Canal on April 7, 2022. The water will be turned into the Phyllis Canal on April 11, 2022. It takes several days to flush the system and prepare the canals and laterals for irrigation delivery users. Due to current drought conditions, minimal irrigation storage water carried over from last irrigation season, and below normal snowpack, the 2022 irrigation season will result in the reduced delivery of irrigation water from the start of the season. Irrigation delivery will be 70% of normal flows, as we monitor changing conditions each day. The reduced irrigation delivery will aid in stretching the short water supply through the irrigation season.

For more information about the upcoming water season, or what canal system you may receive your water from, please contact the District office at (208) 459-3617. Your ditchrider may be contacted once water is in the system.

History of Pioneer Irrigation

pay your bill online

2022 season

To learn the history of Pioneer Irrigation District please click here.

Notice To Control Noxious Weeds - Please read the notice here.

Treasure Valley storage water rights are potentially at stake. Click here to learn about the issue at hand, who is affected, what the status is and how you can help.

District Map

Click here to pay your Pioneer Irrigation bill online!! 

Once the payment processing screen opens, please click the Irrigation Assessments link on the right side and enter the required data  to pay your bill.

Please note there is a convenience fee of 2.95% of the payment amount for credit/debit cards ($1.95 minimum) or $0.95 for electronic checks.  These fees pay for the cost of credit card/EFT processing and do not benefit Pioneer Irrigation District.


Pay-by-phone is available NOW!  You may call the office at 208-459-3617 to pay your bill over the phone (convenience fees noted above do apply). 

Important News Updates

Board of Director meetings are typically held on the 7th of each month, unless there is a conflict.They are held at Pioneer's office at 3804 S. Lake Ave. in Caldwell, ID. The next regularly scheduled Board Meeting is May 9, 2022 at 10:00 a.m.

If you would like to be on the agenda to address the Board, please call the District's Secretary/Treasurer at (208) 459-3617.