Juab County Water Intelligence Brief

Eastern Juab Valley Agricultural Corridor | September 21, 2026

Situation Summary

Salt Creek at Nephi is running at 3–4 cfs and rising this week, providing modest but improving late-season flow to Nephi-area irrigators as the irrigation season winds toward close. Currant Creek near Mona shows 1 cfs rising, consistent with typical late-September conditions in the eastern Juab Valley. With hay cutting largely complete and livestock water demand manageable, the immediate supply picture is stable — though flows remain low in absolute terms and irrigators should plan accordingly for the final weeks of the season. Reservoir storage data and 7-day forecast details are available in the full brief.

Snowpack Conditions

No SNOTEL stations are active within Juab County. This is a genuine monitoring gap: there is no in-county snowpack instrumentation on or near Mount Nebo (11,928 ft), despite Mount Nebo being the highest peak in the Wasatch Range and the primary snowmelt source for Salt Creek and Currant Creek. Local irrigators should consult the Payson Ranger Station SNOTEL in adjacent Utah County to the north as the nearest proxy indicator, and contact the Utah Division of Water Resources for seasonal snowpack assessments relevant to the Mount Nebo watershed.

For seasonal context: the 2026 water year was characterized by an anomalous March heat wave that drove snowpack meltout across the Mountain West 4–6 weeks ahead of the historical median meltout date. That early meltout drove the bulk of runoff into spring rather than early summer — a pattern that shaped this season's delivery conditions from the start. At this date in late September, all area stations show 0.0" SWE, which is the normal seasonal condition for this point in the calendar. No below-normal language is warranted for current snowpack status.

Streamflow Conditions

Salt Creek at Nephi (primary local indicator): 3 cfs, rising. This is the most relevant gauge for Nephi-area irrigators and directly reflects Salt Creek watershed runoff available for local diversions.

Salt Creek below Nephi Powerplant Diversion near Nephi: 4 cfs, rising. The slightly higher reading below the powerplant diversion reflects system contributions downstream of the primary diversion point.

Currant Creek near Mona: 1 cfs, rising. Low but improving; consistent with late-season conditions in the Mona area.

Sevier River near Juab: 1 cfs, falling. This gauge reflects inflow conditions to Yuba Lake from the full upstream Sevier basin (over 5,000 square miles). Use for regional context only — it does not indicate local Juab County supply conditions.

For broader basin reference: the Sevier River shows 45 cfs at Hatch and 8 cfs near Kingston upstream, with 25 cfs near Lynndyl falling. Manti Creek below Dugway Creek near Manti reads 2 cfs stable. These figures provide regional Sevier basin context but are not direct supply indicators for eastern Juab Valley irrigators.

The rising trend on both Salt Creek gauges is the most operationally relevant signal this week.

Seasonal Guidance

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Data Sources: SNOTEL data through September 20, 2026; USGS streamflow data through September 21, 2026

Data Current As Of: September 21, 2026 | 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, Utah Division of Water Rights (primary regulator for all Juab County water rights), Utah Division of Water Resources (for Yuba Lake / Sevier Bridge Reservoir storage data), and local irrigation companies including Nephi Irrigation Company for regulatory decisions and water rights administration.