Water District 1 Reports

MID shares Water District 1 reports to help keep our water users informed about current water supply conditions throughout the year. These reports provide updates on precipitation and snowpack, river flows, reservoir storage, water-right priorities, and other conditions affecting water availability across the Upper Snake River Basin. During the irrigation season, reports are generally issued weekly, with monthly updates provided during the off-season. MID will continue posting new reports as they become available so water users have access to the same information used to monitor conditions and support operational decisions.

The image shows water allocation and usage data for 2026 by month, with a potential carryover noted. Updated on 10/8/2026.

November 2026

Early water year precipitation has been encouraging across the Upper Snake River Basin, but much of it has fallen as rain or melted, leaving snowpack near zero and below normal for this time of year. Reservoir carryover ended at 614,815 acre-feet—the second lowest of the past 30 years—creating a difficult outlook for 2027 storage allocations. Substantially above-average winter precipitation and snowpack will likely be needed to fully refill the system, while winter recharge continues below Minidoka at approximately 500 cfs.

2026-11-04 Water Report.pdf

October 21, 2026

2026-10-21 Water Report.pdf

October 14, 2026

2026-10-14 Water Report.pdf

October 8, 2026

2026-10-08 Water Report.pdf

September 30, 2026

2026-09-30 Water Report.pdf

September 23, 2026

2026-09-23 Water Report.pdf

September 17, 2026