Glacier County, Montana

Overview

Glacier County occupies the northwest corner of Montana along the Canadian border, anchored by Cut Bank with the Canadian border just to the north and the eastern boundary of Glacier National Park to the west. Most of the county lies within the Blackfeet Indian Reservation, and Blackfeet tribal enterprises play a major role in the county economy alongside non-tribal ranching and dryland wheat operations on the benchlands east of the Rocky Mountain Front. Weather is dominated by the Rocky Mountain Front — the abrupt transition from the plains to the Lewis Range — which produces famously high winds and variable winter conditions.

Weather & Moisture

Glacier County has one NRCS SNOTEL station — Many Glacier, at 4,930 feet in the Swiftcurrent drainage of Glacier National Park — which tracks snowpack at the headwaters of the St. Mary River system. The St. Mary system is critical infrastructure far beyond Glacier County’s borders: via the St. Mary Canal (Bureau of Reclamation), water is diverted from the St. Mary River into the North Fork of the Milk River, supplying the entire Milk River Irrigation Project downstream through Blaine, Phillips, and Valley counties. The Two Medicine River and Badger Creek drain the Rocky Mountain Front south of Glacier Park on the Blackfeet side.

Water Rights & Land Ownership

Water rights in Glacier County involve federal, tribal, and state systems in complex overlap. The Blackfeet Reservation holds senior water rights on much of the county’s surface water, formalized through the Blackfeet Water Rights Settlement. The St. Mary Canal (Bureau of Reclamation) diverts St. Mary River water into the Milk River watershed under historic agreements that are periodically challenged and revisited. Non-tribal ranchers east of the reservation hold additional surface and groundwater rights. This is one of Montana’s most legally and politically complex water-rights environments.

Hay & Winter Feed

Irrigated hay production on the Blackfeet Reservation and on non-tribal ranches east of the front supports the county’s cattle operations. Dryland hay is highly variable given the wind exposure and variable snow cover. Operations along the St. Mary and Two Medicine drainages have the most reliable irrigation supply.

Cattle Production

Cow-calf operations on the Blackfeet Reservation and non-tribal land are the primary cattle enterprises. The Blackfeet Nation operates tribal ranching enterprises alongside individual Blackfeet allotment holders and non-tribal leaseholders. Fall-weaned calves typically move through Cut Bank-area order buyers, or to Havre (Hi-Line via US-2).

County Logistics

Cut Bank sits on US-2 (the Hi-Line) and US-89. US-2 is the primary east-west artery, connecting Glacier County to Shelby (I-15 access, ~35 miles east), Havre (~100 miles east), and Browning (on the Blackfeet Reservation, ~35 miles west). US-89 runs south toward Choteau and Great Falls. BNSF rail service parallels US-2.

Data Sources

• USDA NRCS National Water and Climate Center — SNOTEL daily SWE (Many Glacier)
• USDA Drought Monitor — weekly county drought classification
• USGS Water Services — St. Mary River near Babb (05017500) daily discharge
• Montana Mesonet (UMT) — no in-county SWP stations (soil moisture null)
• NOAA NCEI Climate at a Glance — county precipitation anomaly (1/3/12 month)
• USDA NASS — county cattle inventory and agricultural census
• US Bureau of Reclamation — St. Mary Canal / Milk River Project