Three gauges on one September morning
The quickest way to understand the North Fork is to read its gauges side by side. On the morning of September 24, 2026, USGS showed about 57 cfs near Somerset, below Paonia Reservoir; about 15 cfs below Paonia, after the valley's ditches had taken their share; and about 96 cfs near Lazear, just above the mouth, where the river gathers itself again before joining the Gunnison. That is a river the Paonia and Hotchkiss ditches draw on from spring through fall, and it is why this page uses the Somerset gauge: it is the one that reflects what is actually in the upper river.
Somerset's record goes back to 1933. Median monthly flow there is about 60 to 65 cfs through the winter, climbs to about 650 in April, peaks near 1,765 in May and 1,250 in June, then drops to about 310 in July, 230 in August, 150 in September and 85 in October. That runoff comes early and hard, and by midsummer the river is a fraction of its spring self.
Wading between runoff and the ditches
No shop publishes a wading range for the North Fork, so the 80 to 250 cfs band here is taken straight from the Somerset record: the typical flows from August through October, after runoff and before winter. In May and June the river is far above that and not a wading river. Below the band, as in late September 2026, the upper river is low and clear, and the reach below Paonia can be thinner still because of irrigation withdrawals.
Paonia Reservoir sits above Somerset on Muddy Creek, which CPW's Paonia State Park page says feeds the 334-acre lake. In 2026 the park closed its boat ramp on July 1 for the rest of the season because of low water, according to CPW's closure list. When the reservoir is that low, late-summer flows in the river below are low too, so check Somerset before you make the drive over McClure Pass or up from Delta.
Statewide rules on the river, fly-only water in the headwaters
Colorado Parks and Wildlife's 2026 brochure maps the North Fork basin from Hotchkiss to McClure Pass, and it lists no special regulation for the North Fork main stem, so statewide seasons, methods and bag limits apply; below Hotchkiss the brochure sends you to its Lower Gunnison map, which also leaves the North Fork on statewide rules. The special water is up the tributaries. Deep Creek, from its headwaters down to Paonia Reservoir, is artificial flies and lures only with all cutthroat returned. The North Fork of Anthracite Creek, from its headwaters to the confluence with Hell Creek, carries the same pair of rules.
Downstream, the Gunnison below the North Fork confluence is under a voluntary noon-to-midnight closure from Pleasure Park to Highway 65, which CPW put in place on July 21, 2026 for low water and high temperatures and still listed as ongoing in late September. The Gold Medal water on the Gunnison ends at the North Fork confluence.
The creeks above Paonia
Delta County's own fishing guide spends most of its North Fork attention on small water in the hills around Paonia, and that is honest advice. North of town, County Road 4010, Stevens Gulch Road, becomes Forest Road 701 at the national forest boundary about 7 miles out; about 2.5 miles past the second crossing of the power lines, West and Middle Hubbard creeks are a half-mile walk west, and another mile on the road reaches Hubbard Park with Main Hubbard Creek running through it. The county asks anglers to watch for and stay off the private land there.
Further up Highway 133, 26 miles northeast of Paonia, the Collbran turnoff leads to Forest Road 265 and then Forest Road 844, which ends at the Clear Fork of Muddy Creek; the county suggests walking at least a half mile upstream before fishing. Around Crawford the same guide points to brook trout in the beaver ponds of Crystal Creek and brookies and cutthroat in Little Coal Creek. None of this is big water, and several of the roads are four-wheel-drive, so plan the day around the drive.
Borrowing the Gunnison calendar
No North Fork hatch chart was found. The nearest published calendar is Dragonfly Anglers' chart for the Crested Butte and Gunnison country, on the other side of the West Elks, and the table below follows it: midges all year, olives in spring and fall, golden stones from April into July, caddis June through October, green drakes and PMDs in midsummer, and hoppers from August. Delta County notes the June stonefly hatch in the Gunnison Gorge downstream, which is the big event in this part of the state.
The Hotchkiss National Fish Hatchery, about 20 miles east of Delta near Hotchkiss, has a small visitor center and is worth a stop; the county notes it supplies rainbow trout to nearby Crawford Reservoir. On the North Fork itself, bring a small box: attractor dries and a nymph dropper for the creeks, and a few olives and caddis for the main stem once it drops into shape in late summer.