Water Intelligence Brief

Bear Lake County, ID | Bear River Basin | May 26, 2026

1. Situation Summary

Bear Lake County agricultural water users are entering peak irrigation season under critically stressed conditions. Snowpack across the Bear River Basin has effectively disappeared — six of eight monitored SNOTEL stations are reporting zero snow water equivalent, and the two stations still showing snow carry only trace and modest amounts well below seasonal norms. The spring melt pulse at the Bear River mainstem is passing, with rising flows at Pescadero reflecting a compressed contribution from remaining high-elevation snow rather than a sustained seasonal surplus. All upstream and downstream gauges are falling. Irrigators, especially those with junior priority dates, should treat contingency planning as essential work now rather than a precaution.

2. Snowpack Conditions

The snowpack picture for Bear Lake County is stark. As of May 25, 2026, six of eight monitored SNOTEL stations within the Bear River Basin are reporting zero snow water equivalent (SWE) and zero snow depth: Bear River RS, Emigrant Summit, Garden City Summit, Giveout, and Slug Creek Divide have all fully ablated. Emigrant Summit, with a median SWE of 11.4 inches at this time of year, stands at 0% of normal.

Two stations retain snow:

- Franklin Basin: 0.4" SWE against a median of 5.0", representing just 8% of normal, with minimal snow depth

- USU Doc Daniel: 8.2" SWE (38% of its 21.3" median) and 19.0" snow depth — the only station with meaningful remaining accumulation

USU Doc Daniel continues to provide the primary remaining snowpack contribution to the system, but at 38% of median for late May it represents a significantly compressed melt season. The normal late-season snowpack buffer that extends Bear River flows into June and July is essentially exhausted across the basin.

3. Streamflow Conditions

Current USGS gauge readings present a mixed picture that warrants careful interpretation. The Bear River at Pescadero is rising, but this should not be read as a signal of improving supply — the upstream Border gauge is falling, and all downstream gauges are also falling.

Key readings as of May 26, 2026:

- Bear River at Border, WY: 194 cfs — falling

- Bear River at Pescadero, ID: 883 cfs — rising (likely reflecting timing of USU Doc Daniel melt contribution, reservoir management, or tributary lag)

- Bear River near Corinne, UT: 141 cfs — falling

- Logan River above State Dam, near Logan, UT: 292 cfs — stable

- Blacksmith Fork: 67 cfs — stable

- Little Bear River at Paradise, UT: 32 cfs — falling

- Malad River near Bear River City, UT: 6 cfs

The rising signal at Pescadero while Border is falling and Corinne is falling is characteristic of a melt pulse passing through the mid-basin reach. This compressed, early-season signal is not indicative of sustained supply. Once the USU Doc Daniel snowpack finishes melting — likely within the next several weeks — inflows will decline materially. Agricultural users relying on direct Bear River diversions should monitor Pescadero flows closely and prepare for a significant drop.

4. Key Reservoir Systems

The primary storage resources relevant to Bear Lake County agricultural users are:

- Bear Lake — The dominant regional multi-year storage reservoir in the system. Bear Lake is managed under a Federal Energy Regulatory Commission (FERC) license (Project No. P-20) held by PacifiCorp in coordination with the Bear River Commission. This is not a Bureau of Reclamation facility. Current storage status should be obtained directly from PacifiCorp or the Bear River Commission.

- Montpelier Reservoir — A smaller local storage facility on Montpelier Creek serving more localized agricultural users in the Montpelier area.

Given the limited snowpack-driven inflows this season, Bear Lake's carry-over storage level is the most consequential variable for mid-to-late summer water availability. Contact PacifiCorp or the Bear River Commission directly for current storage status — do not rely on assumptions about prior-year carry-over.

5. Water Rights Administration Outlook

Given essentially depleted snowpack, falling streamflows at the Wyoming border and downstream reaches, and the broader regional drought context, the likelihood of water rights curtailments affecting Bear Lake County users is elevated. Idaho operates under a prior appropriation doctrine ("first in time, first in right"), meaning junior water rights holders face the highest exposure as flows tighten through summer.

Bear River Basin administration involves coordination across Idaho, Utah, and Wyoming under the Bear River Compact, adding complexity to curtailment decisions. Users with junior priority dates should engage now with the Idaho Department of Water Resources Eastern Regional Office in Pocatello, (208) 525-7161, to understand their position relative to the basin priority schedule. Early-season curtailment notices, if issued, can arrive with limited lead time.

6. Groundwater Considerations

Bear Lake County falls within the Bear River Groundwater Management Area (Bear River GWMA), designated in 2001 by the Idaho Department of Water Resources, which covers Bear Lake, Caribou, and Franklin counties. The primary aquifer resource for valley-floor agricultural users is the Bear River Valley alluvial aquifer.

In low surface water years, groundwater pumping demand increases as irrigators seek to supplement reduced canal deliveries. However, within the Bear River GWMA, groundwater and surface water are hydraulically connected in many areas. Increased groundwater withdrawals can affect surface water availability and may trigger regulatory response. Users considering increased pumping should verify their groundwater rights and permitted uses with IDWR before expanding withdrawals.

7. Management Recommendations

Immediate Actions (Next 2–4 Weeks)

- Contact the IDWR Eastern Regional Office (Pocatello, (208) 525-7161) to understand your water right priority position and any anticipated administrative actions in the Bear River Basin

- Contact PacifiCorp or the Bear River Commission for current Bear Lake storage status — this is the single most important variable for late-summer supply

Planning Actions (Season Horizon)

Efficiency and Conservation Actions

8. Historical Context

The 2026 season draws comparisons to several historically difficult low-snowpack years in the Bear River Basin. 2021 brought significant curtailments across Idaho and Utah, with canal companies reducing deliveries and some junior rights going unfulfilled for extended periods. 2015 was another severe drought year that prompted emergency measures across the Bear River system, including early curtailment notices and inter-basin coordination actions. 1977, one of the most severe drought years of the 20th century in the West, required extraordinary agricultural adjustments including fallowing and livestock herd reductions.

In each of these analog years, producers who engaged early with IDWR, their irrigation districts, and the Bear River Commission were consistently better positioned than those who waited for formal curtailment notices. With the melt season effectively over and peak irrigation demand arriving, the window for proactive positioning is narrowing.