Salt Lake County Water Intelligence Brief

July 20, 2026 | Free-Tier Edition

Situation Summary

Salt Lake County enters the peak summer demand period with snowpack fully absent across all monitored SNOTEL stations — a condition that is seasonally normal for mid-July, but arrived 4–6 weeks ahead of the historical median meltout date due to an anomalous March heat wave across the Mountain West. With three municipal suppliers managing supply for a county of 1.1 million residents and imported Provo River project water serving as a critical supplement to local canyon storage, the early meltout timing has material implications for reservoir drawdown rates and conservation tier management through the remainder of the season. Reservoir storage data and 7-day forecast details are available in the full brief.

Snowpack Conditions

All five SNOTEL stations monitoring Salt Lake County's canyon watersheds report zero snow water equivalent (SWE) as of July 19, 2026 — a condition that is entirely consistent with mid-July norms at these elevations. No percent-of-median figures are reported because the historical median SWE for this calendar date is also 0.0" at all stations; the stations are at their expected seasonal baseline, not below it.

| Station | SWE (July 19) | Snow Depth |

|---|---|---|

| Atwater | 0.0" | 2.0" |

| Brighton | 0.0" | 0.0" |

| Dry Fork | 0.0" | N/A |

| Mill-D North | 0.0" | 0.0" |

| Snowbird | 0.0" | 0.0" |

The operationally significant signal is not the current SWE reading — it is meltout timing. Stations across Salt Lake County's canyon network melted out 4–6 weeks ahead of the historical median meltout date, meaning the natural snowmelt pulse that normally feeds canyon streamflows and reservoir inflows through late May and June concluded in late April or early May this year. That earlier-than-normal runoff window is now closed; no additional snowmelt contribution to canyon storage or streamflows should be anticipated for the remainder of the season.

A note on station record length: Atwater (SNOTEL 1308:UT:SNTL) has been reporting only since August 2022, giving it fewer than four full water years of record. For historical trend comparison and anomaly detection, Brighton (reporting since 1986), Mill-D North (since 1988), and Snowbird (since 1989) should be weighted as the primary long-term indicators. Atwater readings should be interpreted with this limited-record context in mind.

Streamflow Conditions

Two active USGS gauges are currently transmitting data for Salt Lake County. Municipal and utility planners should be aware that several additional canyon gauges — including Big Cottonwood Creek (10168499, 10169000), Mill Creek (10170000), and Parleys Creek (10171500) — are discontinued and not providing current data. Salt Lake City Public Utilities should be contacted directly for canyon-specific flow data beyond what the Little Cottonwood gauge captures.

Jordan River @ 1700 South @ Salt Lake City (Jordan River Basin): 156 cfs, trending rising as of July 20. The Jordan River at this location integrates flows from Utah Lake, upstream diversions, return flows, and stormwater inputs across the valley. As the primary surface inflow to Great Salt Lake, Jordan River flows at this gauge are relevant not only to municipal operations but to ongoing GSL elevation monitoring and associated legislative and regulatory obligations.

Little Cottonwood Creek @ Jordan River near SLC (Jordan River Basin): 7 cfs, trending rising as of July 20. Little Cottonwood Creek at this location represents residual canyon outflow after upstream diversions — including deliveries to Salt Lake City Public Utilities and Jordan Valley Water Conservancy District service areas. A rising trend at both gauges on July 20 may reflect localized precipitation or storm runoff inputs; municipal planners should verify with operational staff whether recent precipitation is influencing these readings.

Seasonal Guidance

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

Data Sources: SNOTEL data through July 19, 2026; USGS streamflow data through July 20, 2026.

Data Current As Of: July 20, 2026. Water rights and regulatory status verified through 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. Jordan River flows have direct implications for Great Salt Lake elevation under current Utah legislative and regulatory frameworks; users with GSL-connected water rights or reporting obligations should consult the Utah Division of Water Rights and Utah Department of Natural Resources for current guidance.