Sevier County Water Intelligence Brief

October 12, 2026 | Sevier River Basin

*Free-Tier Edition*

Situation Summary

Streamflow across the Sevier River Basin is showing a mixed but generally rising pattern this week, with most active gauges trending upward and late-season flows remaining available for irrigators wrapping up the 2026 irrigation year. The Sevier River at Hatch leads the basin at 68 cfs rising, while downstream conditions at Sigurd show a data gap that limits full basin visibility. Reservoir storage data and 7-day forecast details are available in the full brief.

Snowpack Conditions

Farnsworth Lake SNOTEL (reading through October 11):

Snow water equivalent (SWE) stands at 0.3 inches with a snow depth of 0.0 inches. No percent-of-median figure is associated with this reading, which indicates that the median SWE for this date is also 0.0 inches — the station is at its normal seasonal condition for mid-October, not below normal. Early accumulation of any kind at this date is within the range of typical early-season variability.

For context: the 2026 season was defined by an anomalous March heat wave that drove snowpack meltout 4–6 weeks ahead of the historical median meltout date across the Mountain West, including the Sevier River Basin. That early meltout shaped the summer supply picture; it is background context as the basin now transitions into the pre-winter accumulation period.

The station will become increasingly meaningful for 2027 supply planning as November and December snowfall events begin building the seasonal snowpack. Agricultural users should begin monitoring SNOTEL trends monthly through November and weekly by December.

Streamflow Conditions

Five USGS gauges provide coverage across the Sevier River Basin, with one data gap noted.

Sevier River at Hatch, UT: 68 cfs, rising. This is the highest-volume reading in the basin and reflects upper Sevier River conditions in the southern headwaters reach. The rising trend is the dominant signal for upper basin users.

Manti Creek Below Dugway Creek, near Manti, UT: 5 cfs, rising. This is the primary in-county streamflow indicator for the northern Sevier basin area. The rising signal at this gauge is consistent with the broader basin trend.

Sevier River near Lynndyl, UT: 32 cfs, rising. This lower-basin gauge reflects cumulative flow well downstream in the system. A rising trend here, alongside rising conditions upstream, indicates basin-wide movement rather than a localized pulse.

Sevier River near Kingston, UT: 10 cfs, stable. The Kingston gauge sits between Hatch and the middle basin reaches. The stable reading at a relatively modest flow level, while upstream at Hatch is rising at 68 cfs, warrants monitoring — users in the Kingston reach should watch whether the upstream rise propagates through this segment in coming days.

Sevier River near Sigurd, UT: No recent flow data available. This is a meaningful data gap for mid-basin agricultural users. Irrigators in the Sigurd area should contact their local water district or the Utah Division of Water Rights for current delivery conditions, as automated gauge data is not available at this time.

Overall basin picture: the predominant trend is rising, which for mid-October reflects a late-season transition rather than an irrigation-season supply event. Most Sevier County irrigators will be concluding or have concluded 2026 season deliveries. These flows are more relevant to end-of-season carryover storage filling and early assessment of basin conditions heading into winter.

Seasonal Guidance

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

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