Salt Lake County Water Intelligence Brief

August 24, 2026 | Free-Tier Edition

Situation Summary

Salt Lake County enters late August 2026 under normal late-season snowpack conditions at area SNOTEL stations, though the critical supply story this year is meltout timing: mountain snowpack across the Jordan River watershed melted out 4–6 weeks ahead of the historical median meltout date, compressing the spring recharge window for canyon reservoirs and reducing the duration of peak runoff contributions to the municipal supply system. Jordan Valley Water Conservancy District, Salt Lake City Public Utilities, and Metropolitan Water District of Salt Lake & Sandy should evaluate current storage positions against late-season demand forecasts as the county moves through the final weeks of peak municipal consumption. Reservoir storage data, 7-day forecast details, and supplier-specific operational guidance are available in the full brief.

Snowpack Conditions

All five SNOTEL stations in the Salt Lake County mountain watershed are reporting at or near zero snow water equivalent (SWE) as of August 23, 2026 — a normal condition for this point in the calendar year, as median SWE at these stations is also 0.0" in late August.

Station readings (August 23, 2026):

Important station record note: Atwater (SNTL 1308) has been reporting only since August 2022 — fewer than four years of record. For historical trend comparisons, Brighton (reporting since 1986), Mill-D North (since 1988), and Snowbird (since 1989) carry substantially more weight as long-term indicators. Atwater readings should be treated as supplemental until a longer record is established.

The operationally significant signal for 2026 is not current SWE — it is meltout timing. These stations melted out 4–6 weeks ahead of their historical median meltout dates, meaning the spring runoff pulse that charges canyon reservoirs arrived and concluded well before the typical delivery window. This early meltout has implications for how much carryover storage was captured during peak flows. Current SWE readings alone do not convey this supply timing risk.

Active gauge data gap — action required: Big Cottonwood Creek (USGS 10168499, 10169000), Mill Creek (10170000), and Parleys Creek (10171500) are discontinued gauges not currently transmitting data. Municipal planners relying on real-time canyon creek conditions should contact Salt Lake City Public Utilities directly for current flow monitoring in those drainages.

Streamflow Conditions

Two active USGS gauges provide real-time streamflow data for Salt Lake County.

Jordan River at 1700 South, Salt Lake City (August 22): 201 cfs, trend rising. This is the primary mainstem indicator for Jordan River Basin conditions through the county. The rising trend is notable at this point in the season and warrants monitoring in coordination with upstream supply managers.

Little Cottonwood Creek at Jordan River near SLC (August 20): 7 cfs, trend falling. This tributary reading reflects the diminishing late-season contribution from the Little Cottonwood drainage as snowmelt has concluded.

Together, these two readings represent the currently available real-time streamflow picture for the county. Given discontinued gauges on Big Cottonwood, Mill Creek, and Parleys Creek, managers should treat these two active gauges as partial indicators only. The Jordan River mainstem figure reflects cumulative contributions from multiple sources — including upstream Utah Lake outflows, tributary inflows, and municipal return flows — and should not be interpreted in isolation as a canyon supply metric.

Seasonal Guidance

Municipal Supply Coordination:

Agricultural Users (Secondary — Bluffdale, Herriman, Riverton, Magna):

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

Data Sources: SNOTEL data through August 23, 2026; USGS streamflow data through August 24, 2026.

Data Current As Of: August 24, 2026. Utah Division of Water Rights records current as of brief 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, U.S. Bureau of Reclamation Upper Colorado Region (for Deer Creek and Jordanelle reservoir operations), and Salt Lake City Public Utilities (canyon watershed storage) for regulatory decisions and water rights administration. Great Salt Lake elevation is affected by Jordan River inflows — Salt Lake County water managers should remain current on Utah GSL elevation legislation and associated water rights considerations. This brief does not constitute legal, engineering, or water rights advice.