Washington County, UT — Water Intelligence Brief

October 26, 2026 | Washington County Water Conservancy District Service Area

Situation Summary

Virgin River basin streamflows are rising across multiple gauges this week, with the North Fork Virgin River near Springdale trending upward at 62 cfs and the Santa Clara River at St. George posting 6 cfs on a rising trajectory — signaling active late-October runoff that may reflect early-season precipitation or weather system passage across the watershed. For municipal planners and water managers, these rising conditions represent a modest positive signal for near-term surface inflows to WCWCD's Quail Creek and Sand Hollow reservoir systems heading into the fall recharge window. Reservoir storage data and 7-day forecast details, including supply outlook implications for WCWCD delivery systems, are available in the full brief.

Snowpack Conditions

All five SNOTEL stations in and adjacent to the Virgin River basin headwaters are reporting at or near baseline seasonal conditions as of October 25, 2026:

| Station | SWE | Snow Depth |

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

| Gardner Peak | 0.5" | 0.0" |

| Gutz Peak | 0.0" | 0.0" |

| Kolob | 0.0" | 0.0" |

| Long Valley Junction | 0.0" | 0.0" |

| Webster Flat | 0.0" | 0.0" |

With the exception of a trace reading at Gardner Peak (0.5" SWE), all stations show no accumulation — consistent with expected conditions for late October in southwest Utah, when seasonal snowpack has not yet established. No percent-of-median figures are reported for these stations at this date, indicating that the median SWE for this point in the calendar is also 0.0"; current readings are not below normal for this specific date.

Important historical context: the 2026 water year was marked by an anomalous March heat wave that drove snowmelt 4–6 weeks ahead of the historical median meltout date across the Mountain West, with cascading effects on spring runoff timing and reservoir fill across the Virgin River system. That early-meltout signal is now background context as the basin transitions into the fall accumulation period.

Monitoring caveat: Southwest Utah has notably sparser SNOTEL coverage than northern Utah watersheds. Five stations represent the Virgin River basin headwaters, but high-elevation zones on the Markagunt and Kolob plateaus have limited instrumentation. Water managers should treat these readings as indicative rather than comprehensive. WCWCD and the Natural Resources Conservation Service (NRCS) Utah Snow Survey office can provide supplemental assessment as the winter season develops.

Streamflow Conditions

Virgin River basin gauges are reporting active and, in several cases, rising flows as of October 26, 2026:

| Gauge | Flow | Trend |

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

| East Fork Virgin River near Springdale | 47 cfs | Stable |

| North Fork Virgin River near Springdale | 62 cfs | Rising |

| Santa Clara River at St. George | 6 cfs | Rising |

| Santa Clara River near Pine Valley | 35 cfs | Rising |

| Virgin River above La Verkin Creek nr La Verkin | 37 cfs | Stable |

| Virgin River at Virgin, UT | 129 cfs | Rising |

The most operationally significant reading for WCWCD planning purposes is the Virgin River at Virgin gauge, posting 129 cfs on a rising trajectory — the highest mainstem reading in the network. The North Fork near Springdale at 62 cfs rising and the Santa Clara near Pine Valley at 35 cfs rising indicate that tributary contributions across the upper basin are actively increasing. The Santa Clara at St. George (6 cfs, rising) reflects local lower-watershed conditions relevant to St. George municipal supply planning.

The pattern of simultaneous rising trends across multiple gauges suggests a basin-wide precipitation or runoff response currently in progress. Municipal water managers should monitor whether this translates to meaningful inflows to Sand Hollow and Quail Creek reservoirs over the coming days. Agricultural users in Hurricane Valley and the Enterprise area with active diversions should note that rising conditions on the Santa Clara and Virgin mainstem may support late-season operational flexibility.

Seasonal Guidance

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

Data Sources: SNOTEL data through October 25, 2026; USGS streamflow data through October 26, 2026.

Data Current As Of: October 26, 2026. Water rights administration information current per 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 and Washington County Water Conservancy District (WCWCD), the primary water authority for Quail Creek and Sand Hollow reservoirs, for regulatory decisions and water rights administration. Washington County lies within the Lower Colorado River basin (Virgin River to Lake Mead, HUC 15); users should be aware that Colorado River Compact obligations and federal Bureau of Reclamation Lower Basin shortage tier determinations affect long-term water supply planning for the St. George metro area. The proposed Lake Powell Pipeline remains dormant pending Colorado River system and federal review resolution and is not a current operational supply source. The Shivwits Band of Paiutes holds recognized water rights in Washington County — water managers should account for tribal water interests in local supply and planning contexts. The Navajo Sandstone aquifer is the primary regional groundwater resource; verify all groundwater rights with Utah Division of Water Rights before expanding pumping. This brief does not constitute legal, engineering, or regulatory advice.