Water Intelligence Brief · Archive

Summit County, UT

August 31, 2026

Summit County, UT — Water Intelligence Brief

August 31, 2026 | Free-Tier Edition

Situation Summary

Summit County's dual-watershed character defines this week's water picture: the Weber River system is delivering 237–299 cfs through the county's own Echo and Rockport corridor, while the upper Provo River near Woodland is running at 60 cfs and rising — meaningful late-season flow leaving Summit County toward Jordanelle Reservoir in Wasatch County. For Kamas Valley irrigators along the upper Provo corridor, a rising gauge is a modest positive signal as the irrigation season approaches its final weeks; for Park City municipal and WBWCD system managers, the Weber mainstem at Echo and Gateway reflects stable-to-rising late-season delivery into the county's in-county reservoir infrastructure. Reservoir storage data and 7-day forecast details are available in the full brief.

Snowpack Conditions

All four Summit County SNOTEL stations — Beaver Divide, Chalk Creek #1, Chalk Creek #2, and Trial Lake — are reporting 0.0 inches of snow water equivalent (SWE) and 0.0 inches of snow depth as of August 30, 2026.

This is the normal seasonal condition for late August: the historical median SWE for these dates at these elevations is also 0.0 inches, so the stations are not below normal for today's calendar date. Beaver Divide and the two Chalk Creek stations serve as the primary Weber-side snowpack monitors for Summit County's upper Weber and Chalk Creek drainages; Trial Lake is the in-county headwaters monitor for the upper Provo River basin. The relevant 2026 context is timing: all stations 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 history — it shaped the season's runoff volume and timing, but today's supply story is carried entirely by streamflow, not snowpack.

New accumulation at Summit County elevations is not expected until fall, and the snowpack signal will not return as a management variable until the 2026–27 winter season develops.

Streamflow Conditions

Summit County's gauges present a differentiated picture across its two basins.

Weber Basin (in-county gauges):

  • Weber River at Echo (10132000): 237 cfs, falling (08/30) — This is the primary integrator of upper Weber River flow entering the WBWCD reservoir system at Echo Reservoir, Summit County's own in-county infrastructure. A falling trend at this gauge warrants attention as the late-season irrigation demand period continues.
  • Weber River near Coalville: 190 cfs, stable (08/30) — The Coalville reach, upstream of Echo, is holding steady, reflecting relatively consistent contributions from the upper Weber and its tributaries including Chalk Creek drainages. Stable conditions here support the broader Coalville/Henefer ranching corridor.
  • Weber River at Gateway: 299 cfs, rising (08/30) — Gateway sits downstream of Echo Reservoir and reflects both natural inflow and reservoir operational releases. A rising signal here contrasts with the falling signal at Echo, suggesting reservoir management dynamics may be influencing the downstream reach.
  • Weber River near Oakley: 103 cfs, rising (08/30) — This upper Weber gauge, above Rockport Reservoir, is rising — a positive late-season signal for in-county reservoir replenishment potential.
  • East Canyon Creek near Jeremy Ranch: 8 cfs, stable (08/31) — This is the Park City side of the Weber drainage. At 8 cfs, East Canyon Creek is in typical late-summer low-flow territory. Municipal and resort water managers on the west/north side of the county should note this as a baseline late-season condition, not an emergency threshold.

    • Provo Basin (leaving Summit County):

  • Provo River near Woodland: 60 cfs, rising (08/31) — This gauge measures what Summit County is contributing to the Provo River system before it crosses into Wasatch County toward Jordanelle Reservoir. A rising signal at 60 cfs is a constructive late-season reading for Kamas Valley irrigators and for downstream Jordanelle storage replenishment. Summit Water Distribution Company users in the Kamas, Oakley, Peoa, and Francis corridor should treat this as a workable, if not abundant, end-of-season flow condition.

    • Seasonal Guidance

  • Contact Weber Basin Water Conservancy District (WBWCD) to request current storage status for Echo Reservoir and Rockport Reservoir — both are in-county Summit County facilities and WBWCD is the managing authority.
  • Contact Summit Water Distribution Company for current delivery scheduling and any late-season allocation updates specific to Kamas Valley agricultural users along the upper Provo corridor.
  • Check Utah Division of Water Rights (waterrights.utah.gov) for any active administrative actions or priority call notices on the Weber River or upper Provo River systems before adjusting diversion or pumping operations.
  • Contact Park City Municipal Corporation for current municipal water system status and any late-season conservation measures affecting the Snyderville Basin and Park City service area.

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

    Data Sources: SNOTEL data through August 30, 2026; USGS streamflow data through August 31, 2026.

    Data Current As Of: August 31, 2026. Utah Division of Water Rights records current as of publication date.

    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 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 22, 2026Summit County Brief — June 15, 2026Summit County Brief — June 9, 2026

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