Washington County, UT — Water Intelligence Brief

July 6, 2026 | Virgin River Basin | Free-Tier Edition

Situation Summary

Washington County's water supply is operating under mid-summer baseline conditions, with all monitored snowpack stations at 0.0" SWE — consistent with normal seasonal meltout for early July. The critical supply signal for 2026 is not current snowpack but meltout timing: Virgin River basin stations melted out approximately 4–6 weeks ahead of the historical median meltout date, compressing the spring recharge window for Quail Creek and Sand Hollow reservoirs. As Washington County's rapidly growing metro area (~190,000 residents) enters peak summer demand, WCWCD's managed storage in those two facilities is the primary surface water buffer — and reservoir storage data, 7-day forecast details, and depletion analysis are available in the full brief.

Snowpack Conditions

All five SNOTEL stations monitoring the Virgin River basin and surrounding high-elevation zones report 0.0" snow water equivalent as of July 5, 2026:

Zero SWE at all stations in early July reflects normal seasonal conditions for this point in the calendar — the historical median SWE for this date is also 0.0" at these stations, so no below-normal language is warranted based on current readings. The operationally significant finding is the timing of meltout: an anomalous March heat wave drove snowpack off these stations approximately 4–6 weeks earlier than the historical median meltout date. This early meltout means that the spring pulse of snowmelt-driven recharge to the Virgin River system and WCWCD storage facilities arrived and passed well ahead of schedule — reducing the period during which natural inflows could replenish managed storage before peak summer demand. Southwest Utah's SNOTEL network is relatively sparse compared to northern Utah basins; users should acknowledge inherent gaps in high-elevation monitoring coverage across the full Virgin River headwaters.

Streamflow Conditions

Six USGS gauges are active across the Virgin River basin as of July 6, 2026. All stations report stable conditions:

| Gauge | Flow (cfs) | Trend |

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

| East Fork Virgin River near Springdale | 40 | Stable |

| North Fork Virgin River near Springdale | 28 | Stable |

| Virgin River at Virgin | 57 | Stable |

| Virgin River ab La Verkin Creek nr La Verkin | 45 | Stable |

| Santa Clara River near Pine Valley | 5 | Stable |

| Santa Clara River at St. George | 2 | Stable |

The Virgin River mainstem gauges reflect consolidated flow from its forks, with the at-Virgin reading (57 cfs) and the La Verkin gauge (45 cfs) representing the primary mid-basin supply signal. The Santa Clara River corridor shows substantially lower flows — 5 cfs near Pine Valley declining to 2 cfs at St. George — consistent with late-season base flow conditions on this smaller drainage. Stable trends across all six gauges indicate no immediate storm-pulse or rapid-recession events. These flows represent the natural streamflow signal available for WCWCD diversion into off-channel storage; they do not reflect managed releases from Quail Creek or Sand Hollow reservoirs.

Seasonal Guidance

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Data Sources: SNOTEL data through July 5, 2026; USGS streamflow data through July 6, 2026.

Data Current As Of: July 6, 2026. Utah Division of Water Rights records current as of date of publication.

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, Washington County Water Conservancy District (WCWCD — primary water authority for Quail Creek and Sand Hollow reservoirs), Utah Division of Water Rights, and USBR Lower Colorado Region for regulatory decisions and water rights administration. This brief does not constitute legal, engineering, or water rights advice.