Cascade County, Montana

Overview

Cascade County is a major north-central Montana agricultural and population center, anchored by Great Falls — the third-largest city in Montana. The county straddles the Missouri River at the Great Falls of the Missouri, for which both the city and the county are named, and extends west to the front range of the Rocky Mountains where the Sun River drains the Lewis & Clark National Forest eastward to join the Missouri. Agriculture is diverse: irrigated cropland (sugar beets, barley, alfalfa) under the Sun River Irrigation Project, dryland wheat on the surrounding benchlands, and substantial cow-calf and backgrounding operations with good access to local feeding capacity near Great Falls.

Weather & Moisture

Cascade County’s water supply is driven by three systems: the Missouri River mainstem (fed by upstream snowpack from the Gallatin, Madison, and Jefferson basins), the Sun River (fed by snowpack in the Rocky Mountain Front and stored at Gibson Reservoir), and the Smith River headwaters (joining the Missouri just upstream of the county). The county has no NRCS SNOTEL stations within its boundaries — all the snowpack that matters to Cascade County water supply is in the Lewis & Clark National Forest and the upper Missouri basin. The USGS gauge at Missouri River near Great Falls is the best direct proxy for what the mainstem is delivering to the county’s irrigators.

Water Rights & Land Ownership

Water rights in Cascade County are anchored by the Sun River Irrigation Project (Bureau of Reclamation), which draws from Gibson Reservoir and delivers water to approximately 93,000 acres via the Sun River Canal and Greenfields Division — one of Montana’s largest federal irrigation projects. Missouri River diversions and direct-flow rights on Belt Creek, Muddy Creek, and other tributaries round out the water rights picture. The Montana DNRC Water Rights Query System (WRQS) and Cadastral mapper are the primary tools for individual rights research.

Hay & Winter Feed

Irrigated alfalfa under the Sun River Project is the backbone of Cascade County’s feed base, supplemented by dryland grass hay on benchlands outside the irrigated corridor. The proximity of Great Falls-area feedlots and backgrounding yards creates consistent local demand for hay. In drought years, Cascade County is typically a hay-buying region rather than a net seller, given the concentration of cattle feeding capacity around Great Falls.

Cattle Production

Cascade County carries a mix of cow-calf operations on benchlands and a meaningful backgrounding and finishing sector near Great Falls. The combination gives local producers near-direct access to regional cattle markets without the long-haul freight costs faced by Hi-Line or eastern-plains counties. Fall-weaned calves move primarily through local Great Falls order buyers, the Northern Livestock Video Auction, or direct contracts; finished cattle ship south to Colorado packing capacity.

County Logistics

Great Falls is the regional agricultural and transportation hub of north-central Montana. Interstate 15 runs north-south through the city, connecting Cascade County directly to Helena (~90 miles south) and to the Canadian border and Lethbridge to the north. US-87 / US-89 provide east-west access to Havre and the Hi-Line on one side and to White Sulphur Springs / Billings on the other. Great Falls International Airport and BNSF rail add freight optionality that most rural Montana counties lack. Trucking to Billings runs approximately 3 hours via I-15 / I-90.

Data Sources

• USDA NRCS National Water and Climate Center — upstream SNOTEL (no in-county stations; Sun River and Missouri headwaters feed the county)
• USDA Drought Monitor — weekly county drought classification
• USGS Water Services — Missouri River near Great Falls (06090300) daily discharge
• Montana Mesonet (UMT) — soil moisture (Benton Lake W, Sun River SE, Cascade E)
• NOAA NCEI Climate at a Glance — county precipitation anomaly (1/3/12 month)
• USDA NASS — county cattle inventory and agricultural census