Cache County, UT — Water Intelligence Brief

August 31, 2026 | Bear River Basin

Situation Summary

Late-season Bear River flows are holding at serviceable levels across the basin, with the Pescadero and Corinne gauges both trending upward as of this morning — a modestly encouraging signal for irrigation deliveries into early September. Dairy operations and alfalfa producers should plan for tightening late-season supply as snowpack-driven recharge is now fully exhausted and flows depend on residual soil moisture release and upstream reservoir management. Reservoir storage data and 7-day forecast details are available in the full brief.

Snowpack Conditions

All eight SNOTEL stations in the Bear River Basin above Cache County are reporting at or near zero snow water equivalent as of August 30 — the expected seasonal condition at this point in the calendar, as median SWE for late August is also effectively 0.0" across these elevations. The current zero readings do not indicate below-normal snowpack for this date; they reflect normal summer meltout.

The meaningful signal for 2026 is timing: basin stations melted out approximately 4–6 weeks ahead of the historical median meltout date, driven by an anomalous March heat wave. That early meltout compressed the peak runoff window and has left the basin without late-season snowpack buffer since mid-summer. Station-by-station readings as of August 30 are as follows:

The trace readings at Emigrant Summit (0.1" SWE) and Giveout (0.2" SWE), alongside reported snow depths at Franklin Basin and Tony Grove Lake, likely reflect remnant shading or isolated late-season accumulation rather than meaningful water supply. No additional snowmelt contribution to streamflow should be expected from these readings. The snowpack-driven recharge window for 2026 is effectively closed.

Streamflow Conditions

Bear River Basin flows present a mixed but generally stable picture across Cache County gauges, with two stations trending upward as of this morning.

Bear River at Border, WY (08/30): 61 cfs — stable. This upper-basin entry point reflects modest but steady inflow from Wyoming headwaters. No anomalous movement.

Bear River at Pescadero, ID (08/31): 1,010 cfs — rising. This is the most volumetrically significant gauge in the network and the rising trend is the most notable positive signal in today's data. Flow at this level indicates meaningful water is transiting the Idaho reach of the Bear River toward Utah.

Bear River near Corinne, UT (08/31): 287 cfs — rising. The rising trend at Corinne is consistent with the Pescadero signal and suggests increased inflow is working downstream through the system. This gauge reflects what is available to lower Bear River diversions and Cutler Reservoir operations.

Blacksmith Fork above Upper and Lower Canal Company's Dam near Hyrum, UT (08/31): 51 cfs — stable. Blacksmith Fork is holding steady, providing reliable if modest supply to Hyrum Reservoir operations and local canal diversions in the eastern valley.

Little Bear River at Paradise, UT (08/31): 24 cfs — rising. A positive trend on the Little Bear River, which serves canal diversions in the central Cache Valley agricultural corridor. Rising flow at this level is supportive for late-season alfalfa cutting demand.

Logan River above State Dam, near Logan, UT (08/31): 71 cfs — stable. The Logan River continues to deliver at a serviceable level for upper-valley diversions. Stability here suggests consistent base flow from canyon storage and late-season groundwater contribution.

Malad River near Bear River City, UT (05/15): 6 cfs. This reading carries a May 15 timestamp and should be treated as stale data; current conditions on the Malad are unknown from this source. Users dependent on lower Malad River deliveries should contact their water district directly for current flow status.

Overall, the basin is in a late-season pattern where snowmelt has ceased and flows are sustained by reservoir releases, upstream canal returns, and groundwater base flow. The rising signals at Pescadero and Corinne are operationally relevant but should not be interpreted as indicative of surplus — late-season flows in the Bear River system remain subject to rapid change as upstream storage operations adjust and agricultural demand in Idaho and Utah draws down available supply.

Seasonal Guidance

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Data Sources: SNOTEL data through August 30, 2026; USGS streamflow data through August 31, 2026. NRCS SNOTEL network (8 stations), USGS National Water Information System (7 gauges).

Data Current As Of: Utah Division of Water Rights

Important Disclaimers: This brief provides automated analysis for informational purposes only. Specific numerical claims have not been independently verified. Consult official sources including your local water district, U.S. Bureau of Reclamation, and Utah Division of Water Rights for regulatory decisions and water rights administration.