Shenango River
The dam river: a trout tailwater at Shenango Dam stacked on top of a smallmouth, walleye, and muskie river.
← All stream pages · Tributary map
Current conditions
Gauge: USGS 03103500 — Shenango River at Sharpsville, PA (primary - below Shenango Dam)
Reading baked into this page when it was last updated at 2026-10-14 20:45 — checking the live USGS feed now…
| Window | Reading |
|---|---|
| Too low | Sharpsville under 230 cfs |
| Low and fishable | Sharpsville 230 - 380 cfs |
| Prime | Sharpsville 380 - 1,300 cfs |
| High - big water caution | Sharpsville 1,300 - 2,200 cfs |
| Blown / unsafe at the dams | Sharpsville over 2,200 cfs |
Release water runs clear-green even when tributaries are muddy - the Shenango can be the only fishable river in the county after a storm, and the first to become dangerous when the Corps opens gates.
Storm clearing follows the tributaries (24-72 hours), but release changes happen on the Corps' schedule, not the weather's. The gauge trend matters more than the absolute number.
How the bands were set: Working bands derived from USGS daily statistics for station 03103500 (Sharpsville), 10 years ending Oct 2026: percentiles p10 228, p25 261, median 525, p75 1,320, p90 2,180, p95 2,650 cfs. This is a RELEASE river: flows are set by the Army Corps at Shenango Dam and by Pymatuning Dam upstream (station 03101500, median 154 cfs) more than by last night's rain. Check BOTH gauges and the Corps' release schedule before wading below either dam.
Gauge page: USGS monitoring location 03103500
Season playbook
Resolved from today's date — the current season is highlighted. On the live site this re-resolves in your browser.
Spring (Mar - May)
The water: Releases and runoff together; walleye run the dams.
Fish present: Walleye, smallmouth waking, tailwater trout.
How to fish it: Dam seams at dawn for walleye; tailwater nymphs midday.
Summer (Jun - Aug)
The water: Stable releases, warm river - the smallmouth season.
Fish present: Smallmouth, catfish, crappie, muskie.
How to fish it: Wet-wade the riffles; poppers at dawn; deep bait pools for cats.
Fall (Sep - Nov)This season
The water: Releases draw down; walleye and muskie feed up.
Fish present: Walleye, muskie, smallmouth, outflow trout.
How to fish it: Big streamers low; BWO in the tailwater on grey days.
Winter (Dec - Feb)
The water: The outflow is the only open game in a hard freeze - and only on stable gates.
Fish present: Trout and walleye below the dam.
How to fish it: Short midday sessions; release schedule checked twice.
On now — hatch & forage for October
- BWO and midges (dam-outflow trout water) — BWO duns, Zebra Midge
- Gizzard shad and emerald shiners (tailraces) — Clousers, Murdich-style minnows, white streamers
- Crayfish — Crayfish patterns, brown buggers
Full calendar
| Item | Window | Size | Patterns | Notes |
|---|---|---|---|---|
| BWO and midges (dam-outflow trout water) | Mar - Apr and Oct - Nov | #16-24 | BWO duns, Zebra Midge | Tailwater staples in the Shenango Dam DHALO reach - typical windows per PA regional hatch charts. |
| Sulphur and caddis (outflow, brief) | May - Jun | #14-18 | Sulphur dun, Elk Hair Caddis | Evening activity at the outflow in early summer. |
| Gizzard shad and emerald shiners (tailraces) | Apr - Nov | 2-5 in baitfish | Clousers, Murdich-style minnows, white streamers | Lake baitfish through the gates feed everything below the dams. |
| Crayfish | May - Oct | #4-8 | Crayfish patterns, brown buggers | The river smallmouth's main course, all summer. |
| Hellgrammites and big stoneflies | May - Aug | #4-8 | Hellgrammite and stonefly nymphs | Riffle forage for smallmouth and walleye. |
| White fly (Ephoron) - lower river evenings | Jul - Aug | #10-14 | White Wulff-style dries, white spinners | Big-river summer mayfly known on Ohio-drainage waters; brief dusk blizzards on calm evenings - reported regionally, verify locally at the access. |
Weather & conditions playbook
The row matching the live flow band is highlighted when the gauge answers.
| Condition | What changes | Tactics | Flies | Verdict |
|---|---|---|---|---|
| Release increase (gates opening) | The river can rise feet in an hour on a schedule that has nothing to do with local weather. | Get out. Wade only on falling or steady gauges, and re-check the gauge before every tailwater session. | - | Stay home from the tailwaters on rising releases - no exceptions. |
| Prime (Sharpsville 380 - 1,300, steady) | Full, green release water: every species in play. | Tailwater trout at the dam; smallmouth seams downriver. | BWO/nymphs up top; crayfish and Clousers below. | Go. |
| Low and clear (under 230) | Wadeable everywhere; fish pool up and get spooky in the flats. | Dawn and dusk; smallmouth in the riffle heads. | Poppers early, crayfish midday. | Good summer water. |
| Cold snap | The outflow stays open and stable when the river ices. | Midges in the DHALO on steady gates, midday. | Zebra midges, small nymphs. | Conditional - gates checked. |
| Warm rain / storm runoff | Tributaries muddy the middle river while the dam outflow stays clear - until the Corps compensates. | Fish the outflow's clear water; watch the gauge like weather radar. | Nymphs and streamers in the clear release. | Go - at the dam only. |
| Post-front bright | High sun on a big river: fish go deep and to structure. | Deep seams, timber edges, dawn windows. | Clousers and crayfish deep. | Fishable early and deep. |
Access points
Shenango Dam outflow and Big Bend (USACE Shenango River Lake) · Map pin
Parking: Army Corps recreation areas below Shenango Dam near Hermitage/Sharpsville.
The trout water: PFBC's Delayed Harvest listing sits at the dam outlet (verify section and dates). Tailwater safety is absolute: know the release schedule, watch for rising water, and never wade on a rising gauge.
Sharpsville riverfront · Map pin
Parking: Borough access and parking in Sharpsville on the river.
Town water below the dam: smallmouth, walleye in spring, and the first pools of the lower river.
Jamestown - below Pymatuning Dam (upper river) · Map pin
Parking: Access in and around Jamestown, below the Pymatuning Reservoir dam.
The upper river: a second, smaller tailwater below Pymatuning. Walleye in spring, smallmouth all summer, and the lake's spillover muskies.
Access changes with postings and seasons — respect every sign, and confirm current PFBC regulations before fishing.
The full Shenango River deep dive — $9.99
The complete guide: access map with GPS pins, the full flow-band tactics, hatch calendar, weather playbook, regulations, and sources — a living guide, refreshed as conditions and data change, with refreshed editions free to buyers.
Not sure yet? Preview a full guide free: San Juan River sample (PDF) — a complete guide, so you can see exactly what you get.