Montana Valley and Foothill grasslands

Water-year precipitation to date across three headwater SNOTEL stations ranges from 8 to 43 percent of normal through October 14, 2026. This lean beginning follows September's drought relief and signals a potentially constrained runoff season ahead, especially if the deficit persists through winter.

Water-year precipitation at Many Glacier SNOTEL station 79 km away is 0.6 inches as of October 14, 2026, compared to a median of 1.4 inches for this date, tracking at 43% of normal. With snow accumulation at this lower headwater elevation normally beginning in early November, the persistent deficit suggests reduced water supply entering the 2026-2027 water year.

Water-year precipitation at Grave Creek SNOTEL station 87 km away is 0.1 inches as of October 14, 2026, or just 8% of the 1.2-inch median for this date. This is the driest early water-year start among the three nearest headwater stations, indicating exceptionally light precipitation across the higher-elevation drainage feeding this ecosystem.

Water-year precipitation at Flattop Mountain SNOTEL station 76 km away is 0.4 inches as of October 14, 2026, compared to a median of 2.2 inches for this date. The 2026-2027 water year is tracking at only 18% of normal for early October, and with snow accumulation normally beginning today at this high-elevation headwater station, continued precipitation deficits will reduce the snowpack available to feed streamflow next summer.

Black Meadowhawk (Sympetrum danae) was observed at Pincher Creek on 2026-10-02. Meadowhawks are among the last dragonflies active in fall, with peak emergence in late summer through early autumn, indicating persistent aquatic habitat through the season.

Hawkers and Typical Darners (Aeshna) were observed at Beauvais Lake Provincial Park on 2026-10-03. Darners are active predators during their fall dispersal season and their presence indicates healthy aquatic habitat with sufficient vegetation and open water for hunting.

A Silver-haired Bat was observed at Pincher Creek on 2026-09-16 during fall migration. Silver-haired Bats migrate through mid-September and face critical threats during this period, particularly wind turbine collisions. The species was designated Endangered by COSEWIC in May 2023.

Common Green Darner was recorded on September 29 in Calgary and September 4 in Rocky View County. This species is well known for great migration distances from the northern United States south into Texas and Mexico, with individuals moving through this ecosystem during fall migration.

Striped Meadowhawk was observed on September 30 at Fish Creek Park and September 19 in Calgary. These dragonflies require clean, well-oxygenated water and their presence indicates pollution-sensitive aquatic conditions suitable for their development.

Summer Flier Sedges (Limnephilus) was recorded on October 2 in Calgary. Caddisfly larvae require clean, well-oxygenated flowing water, making their presence an indicator of suitable aquatic habitat conditions.