Summit County, UT — Water Intelligence Brief

June 29, 2026 | Free-Tier Edition

Situation Summary

Summit County sits at the headwaters of two of Utah's major river systems — the Weber River (flowing northwest through Echo and Rockport Reservoirs toward Ogden and the WBWCD delivery network) and the Provo River (flowing south through Kamas Valley toward Jordanelle Reservoir in Wasatch County) — making conditions here the foundation for water supply across a wide downstream region. The 2026 season is defined not by low snowpack today, but by meltout timing: SNOTEL stations across Summit County melted out 4–6 weeks ahead of the historical median meltout date, compressing the runoff season and reducing the period of sustained streamflow that both reservoir filling and agricultural deliveries depend on. Reservoir storage data, 7-day forecast details, and depletion trajectory analysis are available in the full brief.

Snowpack Conditions

All four SNOTEL stations monitoring Summit County snowpack are at or near zero, consistent with late-June seasonal norms — but the story of 2026 is not today's readings; it is when meltout occurred.

Beaver Divide (330:UT:SNTL): SWE 0.0", snow depth 0.0" as of June 28. This in-county upper Provo headwaters station has fully melted out. No percent-of-median is reported, indicating the historical median SWE for this date is also 0.0" — the station is at normal seasonal condition for late June.

Chalk Creek #1 (392:UT:SNTL): SWE 0.0", snow depth 2.0" as of June 28. This Weber-side station, monitoring upper Chalk Creek drainage above Coalville, shows a trace of settled snow depth with no liquid water equivalent — residual corn snow or shaded pack. Data collection issues are noted at this station; readings should be treated with caution and cross-referenced with adjacent stations.

Chalk Creek #2 (393:UT:SNTL): Same data collection issues apply. Treat Chalk Creek readings as directional only until data quality is confirmed.

Trial Lake (828:UT:SNTL): SWE 0.8", snow depth 2.0" as of June 28. This is the sole in-county station still reporting any meaningful liquid water equivalent. Located in the upper Provo River headwaters, Trial Lake's 0.8" SWE represents the last remnant snowpack contributing to Provo River baseflow as it melts through early July. The historical median SWE for this date is not reported as a percent-of-median figure, indicating remaining SWE is within normal late-June range — the concern remains meltout timing, not current depth.

The combined picture: Summit County's snowpack — both the Weber-side Chalk Creek drainage and the Provo-side Trial Lake and Beaver Divide headwaters — melted out 4–6 weeks ahead of the historical median meltout date. The reservoir-filling and agricultural runoff pulse that typically extends into late June or early July concluded significantly earlier than normal this year.

Streamflow Conditions

Six USGS gauges capture current flow conditions across Summit County's dual watershed.

Weber River at Echo, UT (10132000): 349 cfs, stable. This is the primary integrator for the upper Weber basin — total flow entering the WBWCD reservoir system at Echo Reservoir. At 349 cfs stable, the Weber mainstem is delivering a meaningful volume into Echo Reservoir, though flow direction and reservoir response depend on current storage status (available in the full brief).

Weber River near Coalville, UT: 232 cfs, falling. Measured upstream of Echo, this gauge reflects upper Weber mainstem conditions before tributary inputs near Echo. The falling trend here, contrasted with the stable reading at Echo, suggests downstream tributary contributions are buffering the aggregate flow at Echo even as the upper mainstem recedes.

Weber River near Oakley, UT: 101 cfs, falling. The uppermost Weber mainstem gauge in the county, reflecting headwaters conditions above Coalville. The falling trend is consistent with post-meltout recession — snowmelt inputs have largely concluded and flows are transitioning toward summer baseflow.

Weber River at Gateway, UT: 258 cfs, rising. This downstream gauge shows a rising signal, which may reflect reservoir operations, tributary inputs, or timing of upstream pulse movement. Weber Basin Water Conservancy District operations at Echo Reservoir govern releases below this point.

East Canyon Creek near Jeremy Ranch, UT: 18 cfs, rising. East Canyon Creek drains the Park City/Snyderville Basin area on the Weber side of Summit County. At 18 cfs and rising, this tributary is contributing to the broader Weber system. The rising signal in late June warrants monitoring — WBWCD and Park City Municipal Corporation manage East Canyon Reservoir in this drainage.

Provo River near Woodland, UT (10154200): 60 cfs, stable. This gauge measures what Summit County is contributing to the Provo River system as water leaves the county toward Jordanelle Reservoir in Wasatch County. At 60 cfs stable, the upper Provo is delivering a consistent baseflow. Kamas Valley irrigators drawing from the upper Provo corridor should note that this stable reading reflects post-peak conditions — the high-flow runoff window has passed, and flows are now sustained primarily by residual snowmelt (including Trial Lake's remaining 0.8" SWE) and groundwater baseflow contributions.

Seasonal Guidance

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

Data Sources: SNOTEL data through June 28, 2026; USGS streamflow data through June 29, 2026

Data Current As Of: June 29, 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.