Water Intelligence Brief · Archive

Sevier County, UT

September 14, 2026

Sevier County Water Intelligence Brief

September 14, 2026 | Sevier River Basin

Situation Summary

Flows across the Sevier River Basin are running at late-season levels, with gauges showing stable or rising conditions that reflect baseflow conditions rather than active snowmelt or storm-driven pulses. Irrigators should expect continued tight supply for any remaining late-season irrigation needs, with delivery reliability dependent on reservoir carry-over and local ditch company allocations. Reservoir storage data and 7-day forecast details are available in the full brief.

Snowpack Conditions

The single active SNOTEL station reporting for Sevier County is Farnsworth Lake, which recorded 0.2 inches SWE and 1.0 inch snow depth as of September 13, 2026. No percent-of-median figure is provided for this date; the historical median SWE for mid-September at this elevation is also effectively zero, meaning the station is at its normal seasonal condition for this point in the calendar. The 2026 season's defining snowpack story was timing: stations across the basin melted out 4–6 weeks ahead of the historical median meltout date, driven by an anomalous March heat wave. That early meltout is now background context — snowpack is not a supply variable for September irrigation planning.

Streamflow Conditions

Five USGS gauges report conditions across the Sevier River Basin, with readings reflecting typical late-season baseflow levels:

  • Manti Creek below Dugway Creek, near Manti, UT: 3 cfs (stable) as of September 14. A minimal late-season reading on this tributary.
  • Sevier River at Hatch, UT: 43 cfs (stable) as of September 13. This upper-basin gauge reflects the higher-elevation headwaters reach and represents the strongest flow reading in the network.
  • Sevier River near Kingston, UT: 8 cfs (stable) as of September 14. A notably lower reading than Hatch, consistent with mid-basin diversions reducing mainstem flow through the canyon reach.
  • Sevier River near Lynndyl, UT: 60 cfs (rising) as of September 14. The rising trend at this lower-basin gauge is noteworthy and likely reflects return flows, reservoir releases, or tributary contributions entering the system below Kingston — the full brief includes analysis of this signal.
  • Sevier River near Sigurd, UT: No recent flow data available. Irrigators and water managers relying on this mid-basin reach should contact USGS or their local water district for current conditions.

    • The pattern of 8 cfs near Kingston alongside 60 cfs near Lynndyl downstream is a meaningful divergence that warrants attention for mid-basin water managers.

    Seasonal Guidance

  • Contact the Utah Division of Water Rights (waterrights.utah.gov) to confirm your current water right status and any active administrative orders on the Sevier River system before making late-season irrigation commitments.
  • Reach out to your local Sevier River ditch or canal company to verify remaining 2026 delivery allotments and end-of-season shutoff schedules.
  • Check with the Utah Division of Water Resources for current storage status at Sevier Basin reservoirs including Sevier Bridge (Yuba), Piute, Otter Creek, Johnson Valley, and DMAD Reservoir.
  • Contact the USGS Utah Water Science Center regarding the data gap at the Sevier River near Sigurd gauge to determine if monitoring has been suspended or if alternative data sources are available.

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

    Data Sources: SNOTEL data through September 13, 2026; USGS streamflow data through September 14, 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.

    Data & Disclaimers

    Sources: NRCS SNOTEL network · USGS National Water Information System · National Weather Service

    This brief provides automated analysis for informational purposes only. Consult official sources including your local water district and state Division of Water Rights for regulatory decisions. This document does not constitute legal, regulatory, or engineering advice.

    Other Issues

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