Plan around Monday and Friday
Before anything else, check the calendar. The Deep Creek Lake hydro station sends whitewater releases down the Yough every Monday and Friday through a season that runs April through October, plus the first Saturday of May; summer Saturday releases start on the next-to-last Saturday of June and end on the second Saturday of September, with a bonus Saturday on the first weekend of October, according to Precision Rafting in Friendsville, which runs the Upper Yough on those days at 620 to 1,500 cfs. Maryland DNR warns that the river rises abruptly when the plant turns on and gives a number, 315-413-2823, for the scheduled release times.
The same plant is why there are trout here in August. DNR says coldwater releases from the bottom of Deep Creek Lake and a required minimum flow keep the river cool enough through the summer. So the trade is simple: release days make the trout water unwadeable for hours, and the rest of the week you get cold, low, clear water. Tuesday through Thursday, outside the summer Saturday run, is the wading window.
The tailrace to Sang Run Bridge, four miles
The catch-and-return area starts at a red post about 100 yards upstream of the Deep Creek Lake tailrace and runs 4 miles down to the Sang Run Bridge. You may not keep a trout, you fish artificial lures or flies only, no natural bait or scented lures, and hooks must be barbless. DNR describes the reach as about 150 feet wide on average, with low to moderate gradient, shallow riffles, long runs and a few deep pools over cobble, boulders and limestone bedrock.
A Maryland nontidal license plus a trout stamp is required; for 2026 the stamp is $20 for residents and $30 for nonresidents.
Warm-water rainbows and five-pound browns
DNR stocks the section with brown and rainbow trout each year, and the rainbows are a warm-water strain chosen to handle higher temperatures. The agency describes them as deep-bodied and silvery from feeding on the river's insects, and says some browns over 5 pounds have turned up in its surveys. Its current estimate is about 1,300 adult trout per mile, 158 of them over 12 inches. Smallmouth bass are common in the same water and hit trout flies.
The history makes those numbers more impressive. In 1929 a state biologist watched acid water from the Crellin Mine kill rainbow and brook trout, smallmouth, rock bass and mudpuppies as far down as Friendsville. The Yough became Maryland's first Wild and Scenic River in 1976.
Below Sang Run: rapids, then delayed harvest at Friendsville
Past the bridge the river drops into the Upper Yough, the 9.8-mile rafting run to Friendsville that Precision Rafting rates class III to V, with 20 consecutive major rapids and a gradient of about 50 feet per mile. It is not wading water on any day, and on release days it belongs to the boats. Trout anglers pick the river back up at Friendsville, where a delayed-harvest area starts 50 yards below Maple Street at the mouth of Minnow Run and runs 1.8 miles to the powerline crossing above Youghiogheny River Lake. From October 1 to June 15 it is catch and release, artificials, barbless; from June 16 to September 30 you may keep five trout a day with no tackle rules.
Walleye fishing is closed from March 1 through April 15 on the Yough below the Route 42 bridge, the stretch that feeds the reservoir.
Reading McHenry: base flow or release
The McHenry gauge takes in the Deep Creek Lake drainage, so it shows both natural flow and the plant. In the three weeks before September 24, 2026 it swung from 162 to 1,940 cfs. The long-term monthly means, from a record that starts in 2011, run about 230 to 280 cfs from August through October and 700 to 1,000 cfs from December through May. No local shop publishes a wading range, so the 150 to 450 cfs band here is the between-release range in that record. Anything near the 620 cfs Precision Rafting lists as the bottom of a raftable release means the plant is running; wait it out.
The upstream Swallow Falls and Oakland gauges read the river above the tailrace and are a quick check on whether a rise is rain or the plant.
Hatches without a local chart
DNR credits the rainbows' growth to the river's abundant aquatic insects, yet nobody has published a dated hatch list for the four miles above Sang Run. The rows below lean on a New Jersey freestone chart as the nearest stand-in, so read them loosely. On non-release days in low water, small nymphs and soft hackles through the long runs are the safe opening move, and a sculpin streamer along the deeper pools is the way to go looking for one of those five-pound browns.