Sanpete County Water Intelligence Brief

October 19, 2026 | Sevier River Basin

Situation Summary

Streamflows across the Sevier River Basin are running at low late-season levels, with most gauges on a falling trajectory — conditions consistent with the end of the irrigation season for Sanpete County turkey producers, hay growers, and ranchers. Manti Creek, the primary in-county indicator, is reporting just 3 cfs and falling, signaling minimal remaining surface water availability for local diversions. Reservoir storage data and 7-day forecast details are available in the full brief.

Snowpack Conditions

All six SNOTEL stations serving the Sevier River Basin are reporting 0.0" snow water equivalent and 0.0" snow depth as of October 18 — a normal seasonal condition for mid-October, when the median SWE at these stations is also 0.0". No percent-of-median figures are reported because both current and median values are zero at this point in the calendar.

Station readings (October 18, 2026):

For context, an anomalous March 2026 heat wave caused basin snowpack to melt out 4–6 weeks ahead of the historical median meltout date — a condition that shaped the entire irrigation season's supply trajectory. Early-season accumulation at these stations will be the first signal of next year's supply outlook; the first meaningful SWE readings typically appear in November.

Streamflow Conditions

Basin streamflows reflect typical late-October recession, with flows declining across most gauges. Manti Creek — the only active USGS gauge within Sanpete County — is the primary in-county indicator.

Gauge readings (October 19, 2026):

Manti Creek at 3 cfs and falling indicates minimal in-county surface water for remaining diversions. The Sigurd gauge data gap is a notable monitoring limitation for users relying on mid-basin Sevier River conditions. The Kingston gauge's rising reading is a localized anomaly worth monitoring; users in that reach should contact Sanpete Water Conservancy District for interpretation. No active gauge exists on the San Pitch River mainstem — a known data gap for that drainage.

Seasonal Guidance

Subscribe for the full brief including reservoir storage, weather forecasts, depletion analysis, and detailed operational recommendations.

Data Sources: SNOTEL data through October 18, 2026; USGS streamflow data through October 19, 2026

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.