Oakridge water, and why it is not stocked
Three Corps of Engineers dams split the Middle Fork. Hills Creek Dam sits just upstream of Oakridge; Lookout Point and Dexter sit back to back downstream. The trout river anglers drive for is the stretch between them, where the Middle Fork picks up Salt Creek and Salmon Creek at Oakridge and the North Fork of the Middle Fork at Westfir before it slows into Lookout Point Reservoir.
The Caddis Fly shop in Eugene, about 45 minutes away, runs full-day drift trips here from about April through October and describes the fish as wild rainbows with the odd cutthroat, from 8 to 20 inches, with fewer anglers than the McKenzie on most days. ODFW's report is blunt about the reason the fish are wild: the Middle Fork is not stocked with hatchery trout. Upstream of Lookout Point, and above Hills Creek Reservoir too, the river is open all year, all wild trout including brook trout must be released, and ODFW's report says only lures and artificial flies may be used. Guides working this stretch need Forest Service permits, which the Caddis Fly's do.
Reading the gauge below the North Fork
USGS 14148000 sits below the North Fork confluence near Westfir, in the middle of the drift water, so it is the number to check before driving up Highway 58. What it reads is mostly what Hills Creek Dam is releasing plus the North Fork. Monthly means since 2010 are about 2,700 cfs in June, 1,360 in July, 1,380 in August, 1,290 in September and 1,410 in October, with winter months above 4,000. No shop publishes a floating range, so this page uses that June to October spread, 1,300 to 2,700 cfs.
On September 24, 2026 it read 746 cfs, well under the September mean. That fits the year: the Caddis Fly's early July report described water low all over the state after a poor winter, and fish feeling the late-summer squeeze early. In warm, low water the shop's advice is to look for trout at the heads of pools and in riffles, where there is more oxygen.
The shop's bug calendar
The Caddis Fly files its posts under a Middle Fork tag, and 2026's run gives a clear order. March Browns hatched strongly into April, with duns in the long pools on overcast days. Grannoms followed in May. Through June and July the shop leaned on a jigged split-case PMD as its summer dropper, then tied Western Green Drake nymphs for the afternoon drake hatches in the upper sections of these rivers, and Yellow Sally and Golden Stone patterns for midsummer. By August the posts were about ants, beetles and short hoppers, which the shop expects to keep working into early fall.
The practical rig through summer is a buoyant foam stone or Chubby with a jig nymph under it: Perdigons, a Jig TNT or the split-case PMD. Dries matter most on overcast days and in the evening spinner fall.
Dexter Dam's hook and weight rules
Below Dexter Dam the Middle Fork is a different fishery, open all year from the mouth up to the dam for trout, hatchery Chinook, hatchery steelhead and wild steelhead over 24 inches, with coho open October 1 through December 31. The limit is 2 wild trout at 8 inches plus 5 hatchery trout, and bait is allowed. Fall Creek comes in a short way below the dam, and the river joins the Coast Fork at Springfield to become the main Willamette.
The first half mile under the dam has its own rules in the 2026 regulations, and they apply every day of the season. From the dam down about 700 feet to the markers, only one single-point hook with a gap of 5/8 inch or less may be used, and there is no fishing from the north shore, from a floating device or while wading. From the dam down to the power lines, about half a mile, any weight may be no more than 6 feet above the lowest hook. You may cast within 200 feet of the fish ladder at the base of the dam. A Columbia River Basin Endorsement is required for salmon and steelhead, and ODFW notes the Corps has rebuilt the boat ramp on the south side just below the dam, so drift boats and rafts can launch there again.
Detroit is not the only drawdown
In June 2026 the Corps outlined its plan for the Willamette Valley dams: deep drawdowns, seasonal spills and fish-weir operations at key projects to move juvenile salmon downstream and improve water quality. On the Middle Fork that means flows and reservoir levels at Hills Creek, Lookout Point and Dexter can change for fish-passage reasons as well as flood control, and a fall reading below Dexter can look nothing like the Westfir number. Check both gauges, 14148000 above the reservoirs and 14150000 near Dexter, before choosing which river to fish.