Franklin County, ID — Water Intelligence Brief

October 12, 2026 | Bear River Basin

Situation Summary

Bear River flows through the basin are active but modest this week, with the gauge at Pescadero reading 40 cfs (stable) and the Border entry point recording 58 cfs (rising), signaling that late-season base flows are holding as the irrigation season winds down. For Franklin County irrigators, the immediate operational picture is one of transition — surface water deliveries are moving toward seasonal close, and attention is shifting to storage carryover heading into winter. Reservoir storage data and 7-day forecast details are available in the full brief.

Snowpack Conditions

All eight SNOTEL stations reporting for the Bear River Basin show minimal to no snow-water equivalent as of October 11, which is consistent with normal seasonal conditions for this date — median SWE values at this time of year are also at or near zero. No station is reporting a below-median percentage flag, confirming that current readings reflect the expected early-October baseline rather than a deficit condition.

Station-by-station readings:

The relevant 2026 snowpack story is one of timing rather than current deficit: an anomalous March heat wave caused snowpack across the Bear River Basin to melt out approximately 4–6 weeks ahead of the historical median meltout date. That early meltout drove the season's water supply narrative from spring through summer. The snowpack accumulation season is now just beginning, and meaningful SWE readings at upper-elevation stations are not expected until late October or November under typical conditions.

Streamflow Conditions

Seven USGS gauges are reporting for the Bear River Basin, offering a basin-wide picture of late-season flow conditions.

The overall streamflow picture shows a basin that is sustaining late-season base flows, with rising signals at multiple gauges consistent with fall precipitation or upstream management activity. The Pescadero gauge at 40 cfs stable is the most operationally relevant reading for Franklin County water users. The sharp contrast between the 40 cfs at Pescadero and 827 cfs at Corinne underscores how significantly tributary inflows and reservoir operations downstream amplify the mainstem — Franklin County users should not extrapolate lower-basin conditions directly to local supply.

Seasonal Guidance

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Data Sources: SNOTEL data through October 11, 2026; USGS streamflow data through October 12, 2026

Data Current As Of: Idaho Department of Water Resources (Eastern Regional Office in Pocatello, (208) 525-7161, for Bear River basin counties)

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, PacifiCorp/Bear River Commission (for Bear Lake storage operations) and local irrigation districts for regulatory decisions and water rights administration.