Semiarid Foothills

Eight water bodies are officially designated as impaired under the Clean Water Act in the current 2026 assessment cycle, including Provo River, Little Cottonwood Creek, Big Cottonwood Creek, Weber River, Kimball Creek, Snake Creek and Provo Deer Creek. These designations mean the water bodies are failing to meet their designated uses and require cleanup plans.

LOT 114 is in Significant Non-Compliance with its Clean Water Act permit, having missed a compliance schedule deadline by more than 90 days. The facility is required to meet its compliance milestone; missing it exposes the permit holder to enforcement action and potential penalty.

Severe drought coverage in Summit County decreased from 75.76 percent in early September to 55.41 percent in the week of September 22-28, marking partial relief from intensifying drought conditions. The shift suggests recent precipitation or atmospheric conditions have provided some break in the region's severe water deficit, though more than half the county remains in drought category D2 or worse.

Western aster was observed in bloom seven times around Park City between August 26 and September 23, most recently on Iron Mountain Drive. This native understory forb blooms in fall across the foothills, typically starting mid-August and persisting through September, reflecting its role as a late-season food source for pollinators before dormancy.

Mean daily low over the past 30 days was 52.9°F, 14.3°F above the 1991-2020 normal of 38.6°F. Unusually warm nights in fall delay plant dormancy signals and stress water-limited species, relevant in the current severe drought affecting 55.41% of the county.

Three Evening Grosbeaks were reported on 2026-09-24 at Little Dell Recreation Area. Western populations of this species are altitudinal migrants, moving from mountains to lower elevations in fall and winter, and September marks the beginning of this seasonal movement.