Salt Lake County Water Intelligence Brief

June 22, 2026 | Free-Tier Edition

Situation Summary

Salt Lake County enters late June 2026 with snowpack fully melted across all monitored SNOTEL stations, reflecting an anomalous early-melt year driven by a March heat wave that pushed meltout 4–6 weeks ahead of historical median meltout dates. The Jordan River Basin's primary streamflows are declining, signaling the transition to warm-season base flow conditions that will govern municipal supply reliability through late summer. Reservoir storage data, three-supplier coordination metrics, conservation tier trigger analysis, and 7-day forecast details are available in the full brief.

Snowpack Conditions

All five SNOTEL stations monitoring Salt Lake County's Jordan River Basin headwaters are reporting at or near zero snow water equivalent as of June 21, 2026:

Interpretation: Because no percent-of-median figures are reported for these stations at this calendar date, the median SWE for late June is also at or near 0.0" — meaning current readings reflect normal seasonal conditions for this point in the calendar, not a below-normal snowpack signal. The critical 2026 story is meltout timing, not current SWE: stations melted out approximately 4–6 weeks ahead of the historical median meltout date, meaning the season's snowmelt pulse — which recharges Parleys Canyon, Big Cottonwood, Little Cottonwood, and City Creek watershed storage — was delivered earlier than municipal systems typically receive it.

Station record note: Atwater (reporting since August 2022) has fewer than four years of operational record and should not be weighted equally for historical trend comparison. Brighton (record since 1986), Mill-D North (since 1988), and Snowbird (since 1989) are the primary long-record stations for evaluating 2026 conditions in a multi-decade context.

Streamflow Conditions

Two active USGS gauges provide current streamflow data for Salt Lake County. Municipal managers and utility professionals should note a significant data gap: Big Cottonwood Creek (gauges 10168499, 10169000), Mill Creek (10170000), and Parleys Creek (10171500) are discontinued gauges not transmitting current data. For canyon-specific flow conditions in those drainages, contact Salt Lake City Public Utilities directly.

Active gauge readings as of June 22, 2026:

Interpretation: Both gauges show declining trends consistent with post-meltout base flow recession. The Jordan River mainstem at 134 cfs reflects aggregated inflows from multiple canyon tributaries, Utah Lake outflow regulation, and return flows — a composite signal rather than a single-source indicator. Little Cottonwood Creek at 6 cfs and falling indicates that direct snowmelt contribution from that drainage is largely exhausted. As the primary surface inflow to Great Salt Lake, Jordan River flows at this level and trend are relevant not only to municipal operations but to ongoing Great Salt Lake elevation monitoring and associated Utah legislative and legal frameworks governing consumptive use in the basin.

Seasonal Guidance

*For municipal managers, utility professionals, and policy stakeholders:*

*Secondary Section — Agricultural Users (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 June 21, 2026; USGS streamflow data through June 22, 2026.

Data Current As Of: June 22, 2026. Water rights administration status current as of 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, 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. This brief does not constitute legal, engineering, or water rights advice.