Effective Monday May 11, 2026, TSID Senior water is at 50%.  The rotation schedule has been updated with an adjustment to Hurtley North. Please see the percentage and rotation  schedules.

2026 TSID 50^1 Rotation Schedule.pdf2026 50% Delivery Schedule.pdf

 

Previous messages:

Effective immediately, April 30,2026,  TSID will be at 40% water for all Senior water. See the updated 40% delivery schedule and continue using the same rotation schedule

2026 40% Delivery Schedules.pdf2026 TSID 50^1 Rotation Schedule.pdf

Updated Rotation Schedule Below

We’ve updated the rotation schedule due to ongoing low water conditions. Senior deliveries remain at 50%. Please review the attached schedule for your assigned days and amounts.

Water will stay in the system. Please use water only during your scheduled times and within your allotment so everyone receives their share. If needed, we will begin regulating use to keep distribution fair.

We know this is a difficult season. Reach out anytime with questions—we’re here to help.

 

Starting Tuesday, April 28, 2026 TSID will be at 50% water for all Senior water. We will also begin a rotation schedule. Please see the pdfs below to find your schedule and percentage. Junior water remains off.

Starting Tuesday, April 28, 2026 TSID will be at 50% water for all Senior water. We will also begin a rotation schedule. Please see the pdfs below to find your schedule and percentage. Junior water remains off.

2026 50% Delivery Schedule.pdf

 

 

Starting Friday, April 24, 2026 TSID will be at 70% water for all Senior water. Junior water will be off.

Starting Friday, April 24, 2026 TSID will be at 70% water for all Senior water. Junior water will be off.

2026_70%_ DeliverySchedules.pdf2026 All Delivery Schedules.xlsx

 

 

2026 Irrigation Season – Water Supply Update

As we approach the 2026 irrigation season, current conditions indicate an extreme drought year, comparable to some of the driest years on record. Water supply in Whychus Creek is expected to be significantly limited.

Due to priority-based water rights:

• Junior water users should plan for very limited water availability and may receive little to no irrigation depending on conditions.
• Senior water users should plan conservatively, with current projections indicating that approximately one cutting of hay may be possible.

Actual water availability will depend on real-time streamflows and may change as conditions evolve throughout the season.

Water deliveries will begin for stock use after March 23, with irrigation ramping up gradually as conditions allow. Early-season flows are expected to be low and intermittent.

We strongly encourage all patrons to plan conservatively and prepare for limited water availability.

TSID will continue to provide updates as conditions change.

 

 

 

 

 

Three Sisters Irrigation District
2026 Irrigation Season Start-Up Notice

Three Sisters Irrigation District plans to begin the 2026 irrigation season with a stock water run starting after March 20, 2026, weather and system conditions permitting.

Initial deliveries will occur at stock water levels while the system is filled and checked. During this time, patrons should expect low and intermittent flows as the district gradually ramps up deliveries throughout the system.

The 2026 season is beginning under drought conditions, and no supplemental well water will be available this year. Water deliveries will depend entirely on natural flows in Whychus Creek, and availability may remain limited throughout the early part of the season.

Current expectations for the season include:

• Stock water run: Beginning after March 20
• Early season deliveries: Low and intermittent while the system fills
• Ramp-up: Flows will increase gradually as natural water supply allows
• Season outlook: Water availability may support limited irrigation early in the season, and patrons should plan conservatively

Patrons should check their on-farm valves prior to the start of the season and ensure they are set appropriately (open or closed) depending on their needs before water begins moving through the system.

The district will continue monitoring streamflows and system conditions and will provide updates as the season develops, including when higher delivery levels may be possible.

For questions regarding deliveries or system operations, please contact the TSID office.