Tulpehocken Creek

The "Tully" is southeastern Pennsylvania's tailwater — a warmwater creek turned coldwater trout stream by the Army Corps' Blue Marsh Dam, which came online in 1979 and draws its release from up to 50 feet down in the reservoir. That bottom draw is the whole story: it hands roughly four miles of creek below the dam cool, fertile water and holdover browns and rainbows that average 13–16 inches, with a few pushing past 18. The regulated water is Delayed Harvest Artificial Lures Only — 3.8 miles from the first rock deflector below the dam down to Wertz's (Red) Covered Bridge at Gring's Mill. The signature draw is small and technical: summer Trico spinner falls at first light and a year-round midge game that gives you a legitimate dry-fly option on a January afternoon, which is more than almost any other water in the state offers.

This is a wade stream, not a float — pools, riffles, and glassy flats where fish get a long look at your fly. Bring long leaders (10–14 feet) tapered to 6X–8X, a 4- or 5-weight for general work, and a soft 3-weight for the Trico game, when the spinner fall comes off in the morning and is usually finished by 9 a.m. Sulphurs carry the late-spring evenings, caddis run all season, and BWOs fish best on the overcast, drizzly days. The flats fish spooky and demand a clean drift; the deflector water up top is more forgiving nymph-and-streamer water.

The honest limiter is Blue Marsh itself. The dam schedules releases for downstream flood control and recreation, and a heavy discharge turns the creek high, pushy, and off-color fast — always check the flow before you drive out. And despite the cold-tailwater reputation, midsummer releases can still push water temps into the mid-60s (the gauge read 64.6°F on a mid-July night), so warm, stained summer flows are a real problem, softened only where cold tributaries like the Cacoosing dump 55–60°F water back in. The USGS gauge at the damsite carries water temperature as well as flow, so you can check both before committing. This is also the closest quality trout water for the whole Reading/Philadelphia-exurb corridor, so weekends — especially during the Trico window — get busy. TCO Fly Shop in Reading is right in town and functions as the stream's clubhouse.