Water Intelligence Brief · Archive

Summit County, UT

June 22, 2026

Summit County, UT — Water Intelligence Brief

June 22, 2026 | Free-Tier Edition

Situation Summary

Summit County sits at the headwaters of two major Utah river systems — the Weber River flowing northwest through Echo and Rockport Reservoirs toward the WBWCD delivery network, and the Provo River flowing south toward Jordanelle Reservoir in Wasatch County. In 2026, an anomalous March heat wave drove snowpack meltout across Summit County's SNOTEL stations approximately 4–6 weeks ahead of the historical median meltout date, meaning the county's snowmelt pulse has already passed and both the Weber and Provo systems are now running on residual baseflow. Reservoir storage data for Echo and Rockport Reservoirs and 7-day forecast details are available in the full brief.

Snowpack Conditions

All four in-county SNOTEL stations reflect a fully melted snowpack, consistent with the early-melt character of the 2026 season.

Weber-side stations (Chalk Creek drainage):

  • Chalk Creek (06/21): SWE 0.0", snow depth 1.0". Note: this station is flagged for data collection issues — the reported 1.0" depth reading should be interpreted cautiously and may not reflect actual on-the-ground conditions.
  • Beaver Divide (06/21): SWE 0.0", snow depth 0.0". Full meltout confirmed.

    • Provo-side stations (upper Provo River headwaters):

  • Trial Lake (06/21): SWE 0.8", snow depth 2.0". This is the only station showing any measurable SWE remaining in Summit County. As the historical median SWE for Trial Lake at this calendar date is also near zero, this reading does not represent an anomalous surplus — it reflects a remnant patch at elevation, consistent with near-normal late-June conditions for this station.

    • The operative signal for Summit County is not today's SWE reading — it is meltout timing. Stations melted out 4–6 weeks ahead of the historical median meltout date, meaning the spring runoff contribution to both the Weber and Provo systems has already been delivered. No additional snowmelt recharge to streamflow should be expected from Summit County headwaters in the near term.

    Streamflow Conditions

    Summit County's gauges tell a two-system story: the Weber mainstem is running at substantial volumes in stable condition, while upper Provo and lower Weber tributaries show falling or modest flows.

    Weber River system:

  • Weber River near Oakley, UT: 124 cfs, falling. This upper-mainstem reading reflects declining flows from the Kamas-area Weber headwaters — the falling trend is consistent with post-meltout baseflow recession.
  • Weber River near Coalville, UT: 307 cfs, stable. Flow has consolidated as tributaries contribute downstream of Oakley.
  • Weber River at Echo, UT: 349 cfs, stable. This is the primary integrator gauge for the entire upper Weber system — it measures total Weber River flow entering the WBWCD reservoir system at Echo Reservoir. The stable reading at 349 cfs indicates the system is holding steady at this point in the season.
  • Weber River at Gateway, UT: 216 cfs, stable. Downstream reading below major diversions; stable trend mirrors Echo.
  • East Canyon Creek near Jeremy Ranch, UT: 21 cfs, rising. This Weber-side tributary serving the Park City/Snyderville Basin drainage is showing a slight rise — a relatively modest volume for this time of year.

    • Provo River system:

  • Provo River near Woodland, UT: 56 cfs, falling. This gauge measures what Summit County is contributing to the Provo system before it exits the county toward Jordanelle Reservoir in Wasatch County. The falling trend is consistent with post-peak recession and confirms the snowmelt pulse has passed on the Provo side.

    • The dominant theme across both systems is post-meltout recession. The Weber mainstem at Echo remains the strongest flow reading in the county at 349 cfs, but the falling signals at Oakley and Woodland indicate that without additional precipitation, both systems will continue to trend downward through summer.

    Seasonal Guidance

  • Contact Weber Basin Water Conservancy District (WBWCD) to check current storage status at Echo Reservoir and Rockport Reservoir, both physically located in Summit County, and to understand system delivery outlook for downstream users.
  • Contact Summit Water Distribution Company for current Kamas Valley agricultural delivery scheduling along the upper Provo River corridor.
  • Check Provo River Water Users Association for upper Provo River allocation status and any coordination affecting water available to Kamas, Oakley, Peoa, and Francis agricultural users.
  • Check Park City Municipal Corporation for current municipal supply conditions in the Snyderville Basin, including any summer demand management measures that may affect East Canyon Creek drainage operations.

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

    Data Sources: SNOTEL data through June 21, 2026; USGS streamflow data through June 22, 2026

    Data Current As Of: June 22, 2026. Water rights and regulatory status current as of Utah Division of Water Rights records.

    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, Weber Basin Water Conservancy District (WBWCD — operates Echo Reservoir and Rockport Reservoir, both physically located in Summit County), U.S. Bureau of Reclamation (Upper Colorado Region), Park City Municipal Corporation (municipal water for Park City and Snyderville Basin), Summit Water Distribution Company (Kamas Valley), Provo River Water Users Association (upper Provo River allocation), 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

    Summit County Brief — October 26, 2026Summit County Brief — October 19, 2026Summit County Brief — October 12, 2026Summit County Brief — October 5, 2026Summit County Brief — September 28, 2026Summit County Brief — September 21, 2026Summit County Brief — September 14, 2026Summit County Brief — September 7, 2026Summit County Brief — August 31, 2026Summit County Brief — August 24, 2026Summit County Brief — August 17, 2026Summit County Brief — August 10, 2026Summit County Brief — August 3, 2026Summit County Brief — July 27, 2026Summit County Brief — July 20, 2026Summit County Brief — July 13, 2026Summit County Brief — July 6, 2026Summit County Brief — June 29, 2026Summit County Brief — June 15, 2026Summit County Brief — June 9, 2026

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