Idaho Surface Water Coalition and Groundwater Districts File Joint Emergency Stay Request to Halt Butte County Crop Season Curtailment
Why It Matters
Farmers across Butte County, Idaho, are facing a high-stakes crisis during one of the most critical periods of the growing season. A state-ordered water curtailment has forced groundwater irrigators to shut off their pumps — in many cases, after crops were already in the ground — threatening livelihoods and agricultural output across the Big Lost and Little Lost River basins.
The dispute cuts to the heart of Idaho’s foundational water law, and its resolution could shape how the state balances competing water rights during ongoing drought conditions for years to come.
What Happened
On April 17, 2026, the Surface Water Coalition (SWC) and the Idaho Ground Water Appropriators (IGWA) filed a joint request at 2:00 p.m. asking the Idaho Department of Water Resources (IDWR) to temporarily pause enforcement of the ongoing curtailment order affecting groundwater irrigators in the Big and Little Lost basins.
The filing came less than 24 hours after IDWR Director Matt Weaver denied an earlier motion to stay the curtailment, which had left pumps shut off mid-season across Butte County. The joint request asks that groundwater irrigators be allowed to resume pumping through at least May 4, 2026, while technical experts from all sides conduct a thorough review of a proposed “First Addendum” to the existing 2024 Stipulated Mitigation Plan.
The review would determine whether three groundwater districts can be added to the plan without negatively impacting water users already enrolled. All parties are scheduled to reconvene on May 4 for a follow-up status conference. Director Weaver was expected to issue a decision on the stay request as early as the evening of April 17.
The curtailment was triggered under Idaho’s “prior appropriation” doctrine — the legally binding “first in time, first in right” principle — after Director Weaver projected a shortfall of 181,600 acre-feet for senior surface water users this season due to ongoing drought conditions. Under legislation passed requiring junior groundwater users in the Lost River basins to join an approved mitigation plan, three districts that missed a November 2025 deadline became subject to curtailment orders.
By the Numbers
- 181,600 acre-feet — projected water shortfall for senior surface water rights holders this season
- 3 groundwater districts in the Big and Little Lost basins subject to the curtailment order
- May 4, 2026 — the date through which the joint stay request asks pumping to be allowed to continue
- 2:00 p.m., April 17 — the time the joint emergency stay request was officially filed
- 3 weeks — the approximate window for technical experts to review the First Addendum to the 2024 Mitigation Plan
Voices From Both Sides
The joint filing represents a notable shift for the SWC, which had praised Director Weaver’s commitment to upholding Idaho’s Constitution just one day earlier. SWC Chairman Alan Hansten said the coalition acted in good faith to keep water flowing during a critical season.
“It is never our desire for any water to be shut off,” Hansten said. “Our members recognize the challenges facing farmers in Butte County. That is why SWC has taken this step in good faith to ask IDWR to keep water flowing while the parties and IDWR complete the necessary technical review.”
Little Lost River Ground Water District Chairman Kirk Nickerson expressed frustration that relief did not come sooner, while acknowledging the cooperation shown. IGWA President and Idaho lawmaker Stephanie Mickelsen praised the collaborative response. “Even when water users do not agree on every issue, farmers can still come together, act in good faith, and find solutions quickly when it matters most,” Mickelsen said.
Zoom Out
Idaho’s water system is under increasing pressure as drought conditions persist across the Mountain West. The prior appropriation doctrine, while legally clear, creates difficult real-world consequences when shortfalls force junior rights holders — including farmers who planted crops expecting normal allocations — to go without water.
This case mirrors broader tensions playing out across Idaho’s agricultural regions. Earlier this year, state officials paused new groundwater rights in Canyon County while studying aquifer health, signaling a growing recognition that Idaho’s water resources face long-term sustainability challenges that existing legal frameworks may struggle to address alone.
What’s Next
Director Weaver’s decision on the emergency stay request was expected within hours of the filing. If granted, Butte County groundwater irrigators would be allowed to resume pumping while technical experts evaluate the proposed addendum to the mitigation plan.
All parties are scheduled to meet again on May 4, 2026, for a status conference to review findings and chart the path forward. The outcome will carry significant weight not just for this season’s crops, but for how Idaho manages the increasingly delicate balance between senior surface water rights and junior groundwater users during drought years ahead.
About the Author
