Summit County, UT — Water Intelligence Brief

June 15, 2026 | Free-Tier Edition

Situation Summary

Summit County occupies a rare dual-headwaters position in Utah: it is the source county for both the Weber River system — feeding north and west through Echo and Rockport Reservoirs toward Ogden and the WBWCD delivery network — and the upper Provo River system, whose flows leave Summit County near Woodland before entering Jordanelle Reservoir in Wasatch County. Across both drainages, the 2026 snowpack melted out 4–6 weeks ahead of the historical median meltout date, driven by an anomalous March heat event, meaning the seasonal snowmelt pulse that typically sustains June streamflows is largely spent. Reservoir storage data and 7-day forecast details are available in the full brief.

Snowpack Conditions

All four in-county SNOTEL stations are reporting at or near zero snow water equivalent as of June 14 — consistent with early-season meltout conditions, not below-normal snowpack for this specific calendar date.

Beaver Divide (Station 330): SWE 0.0", snow depth 0.0". Full meltout. This station monitors upper Weber basin headwaters on the Summit County side. No median percent-of-normal figure is shown, indicating the long-term median SWE for this date is also 0.0" — the station is at a seasonally normal reading *today*, but reached this point 4–6 weeks earlier than the historical median meltout date.

Chalk Creek #1 (Station 392): SWE 0.0", snow depth 2.0". The residual 2-inch snow depth with zero SWE indicates dense, melting or icy remnant snow with no meaningful water content. Data collection issues are noted at this station — treat readings with caution and do not rely on Chalk Creek data alone for operational decisions. Chalk Creek stations are the primary Weber-side snowpack monitors for the upper Chalk Creek drainage above Coalville.

Trial Lake (Station 828): SWE 0.8", snow depth 2.0". This is the only in-county station still reporting measurable snow water equivalent. Trial Lake sits in the upper Provo River headwaters and is a home station for Summit County — it monitors the same terrain that feeds flows toward Woodland and onward to Jordanelle. The 0.8" SWE is a minor remaining pulse; expect full meltout at this elevation within days to two weeks under typical mid-June temperatures.

Summary: The 2026 snowpack story for Summit County is not today's readings — those are seasonally expected. The story is timing: both the Weber-side (Chalk Creek, Beaver Divide) and Provo-side (Trial Lake) snowpack melted out well ahead of schedule, compressing the spring runoff window and accelerating the transition to base-flow season.

Streamflow Conditions

Summit County's six active USGS gauges collectively describe a system past its runoff peak and beginning the descending limb of the hydrograph — with some nuance by sub-drainage.

Weber River near Oakley (178 cfs, falling): The uppermost Weber mainstem gauge, capturing flows from the Oakley area before the river moves toward Coalville. The falling trend at this station reflects the diminishing snowmelt contribution from upper Weber headwaters — consistent with the meltout timing described above.

Weber River near Coalville (303 cfs, rising): Slightly downstream from Oakley, this gauge is rising despite Oakley falling — likely reflecting tributary contributions or lag effects in the Coalville reach. Ranching operations in the Coalville/Henefer corridor should note that mainstem flows remain substantial here for now.

Weber River at Echo (344 cfs, stable): The primary Weber basin integrator for Summit County, measuring total upper Weber flow entering the WBWCD reservoir system at Echo Reservoir. At 344 cfs and stable, the system is delivering a meaningful volume into in-county storage. Echo Reservoir and Rockport Reservoir — both physically located in Summit County and managed by WBWCD — are receiving this inflow. This gauge is what determines what the broader WBWCD system receives from its source county.

Weber River at Gateway (327 cfs, rising): Downstream of Echo, this gauge shows a rising trend, suggesting the reach between Echo and Gateway is contributing additional flow. The slight drop from Echo (344) to Gateway (327) is within normal measurement variability for adjacent gauges.

East Canyon Creek near Jeremy Ranch (9 cfs, rising): East Canyon Creek is the Park City side of Summit County's Weber basin contribution. At 9 cfs and rising, this small drainage is delivering modest flows — the rising signal may reflect recent precipitation or delayed snowmelt from north-facing terrain near the Park City ski area. East Canyon Reservoir (on the Morgan/Summit County border) receives these flows as part of the WBWCD system.

Provo River near Woodland (84 cfs, falling): This gauge measures what Summit County is contributing to the upper Provo system before flows enter Wasatch County toward Jordanelle Reservoir. At 84 cfs and falling, the upper Provo is well past its peak and declining — this is the supply signal that Kamas Valley hay and alfalfa producers should watch closely as irrigation season advances. The falling trend indicates the snowmelt-driven surplus is ending; what Kamas Valley irrigators draw now comes increasingly from baseflow rather than active melt.

Seasonal Guidance

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Data Sources: SNOTEL data through June 14, 2026; USGS streamflow data through June 15, 2026

Data Current As Of: June 15, 2026 | 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, 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.