Mile 58 to mile 33: the border, Ford, Schnaus Cabin and Polebridge
Count this river by the river miles on the Flathead Rivers Alliance access list, which count down toward the Middle Fork confluence near Blankenship. The Canadian Border access sits at river mile 58, and Glacier Anglers puts the Montana length at the same 58 miles. Below it come Ford at mile 44, Schnaus Cabin at 39.3, and the pair of Polebridge accesses at 33.9 and 33.8. Glacier National Park holds the east bank the whole way; the west side is Flathead National Forest, state and private land.
This upper stretch is the most remote water on the page. The park describes the North Fork as reached only on unpaved roads, with services only in Polebridge, no cell signal, and flat tires common enough that it recommends a vehicle you can change one on. Glacier Anglers' late August 2026 report called the upper stretches skinny after the river dropped, so late-season floats up here mean dragging.
Coal Creek, Big Creek and the 150-yard circle
Coal Creek access is at river mile 24.5 and Big Creek at 15.3. Big Creek is where the two rulebooks bite hardest. FWP closes the North Fork from June 1 through September 30 within a 150-yard radius of the Big Creek mouth, unless it is posted at a greater distance. Glacier's own closed-waters list names the North Fork within 200 yards of the mouth of Big Creek. Treat the larger number as the line on the ground and fish elsewhere.Both agencies also require every bull trout you hook, anywhere on the river, to go back at once.
FWP's fish data shows why the protection matters upstream too. At a spring sampling station a quarter mile above Trail Creek, near the border, crews in April and May 2012 logged mountain whitefish by the hundreds on most days, a few westslope cutthroat up to 498 mm, about 19.6 inches, and single bull trout. Across the line in British Columbia, a 2023 electrofishing day in the upper Flathead turned up 35 juvenile bull trout.
Great Northern Flats to Glacier Rim
The last access points are Great Northern Flats at river mile 11 and Glacier Rim at 3.8, and these are the two Glacier Anglers names as the best access on the whole river. The Columbia Falls gauge on this page sits at the bottom of this reach, so what it reads is what you are floating here. Below Glacier Rim the river runs on to meet the Middle Fork at Blankenship Bridge.
Glacier Anglers rates the North Fork class I to II with its peak in early June and low water by mid-August, and describes the channel as widening and braiding between the park and Forest Service land. That braiding is the fishing: deep slow pools to drift a fly through and the tails of fast riffles to swing or skate.
Park bank or forest bank: which rules you are under
FWP draws the Montana and Glacier boundary down the middle of the North Fork. Glacier says the seasons, limits and methods on the North Fork are the same as Montana's, but that no state license is needed when you fish it from park land. Fish from the forest bank or on a guided float and you need a Montana license; Glacier Anglers requires one on every trip. On the park side the park's own gear rules also apply: felt-soled wading boots are banned, all lead fishing tackle is banned, and treble hooks are prohibited on the North and Middle Forks.
Montana's 2026 rules for the North Fork, from its headwaters to the Middle Fork near Blankenship Bridge: single-pointed hooks only, catch-and-release for cutthroat, rainbow trout 5 daily and in possession, and the Western District season from the third Saturday in May through November 30. An extended season runs December 1 to the third Saturday in May with artificial lures and maggots only. All Western District waters are closed to angling for bull trout, and any you catch must be released with no delay.
How low is too low at Columbia Falls
No shop publishes a flow range for this gauge, so the range here comes from the USGS record since 1939: from the mid-September daily median of 971 cfs up to the mid-July median of 3,510 cfs, the stretch of summer when outfitters fish it. The monthly means climb from 979 cfs in March to 9,724 in May and 9,898 in June, then drop to 3,960 in July, 1,566 in August and 1,113 in September. In 2026 the river was running 14,800 cfs on June 2, fell to 3,120 by July 15, and read 898 cfs on August 28, the week Glacier Anglers reported the upper river skinny. It rose again to 1,330 cfs on September 15 and read 1,040 on September 23.
Near or below 1,000 cfs, expect the upper river to be as thin as Glacier Anglers found it in late August 2026. Its shuttle from West Glacier to a North Fork launch takes 30 minutes to a little over an hour depending on which one, which is worth knowing when you choose how far up to start.
A dry-fly river after the snow is gone
Glacier Anglers calls the North Fork a dry-fly river where cutthroat come up off the bottom through clear water to eat. Its hatch list for the river is short and practical: hoppers, cinnamon and black flying ants, beetles, adult mayflies, stoneflies and caddis, midges and mayfly nymphs, with mornings the best time. The August 28, 2026 report had fish rising to hoppers, ants and beetles all day, and pushed big foam terrestrials straight down the middle of the river and into faster runs, where the bigger fish were eating bigger bugs. Its fly list: a purple Schroeder's Hi-Vis Hopper in 12, a black Flying Ant in 12 to 16, a tan Supafly Stone in 12 to 14, a Patriot in 12 to 14, a yellow bead-head stonefly nymph in 12 and a San Juan worm.