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Allegheny Reservoir is a reservoir located in Pennsylvania. Fish documented in the area include Brook Trout, Rainbow Trout, Brown Trout, and Walleye. It covers roughly 12,000 surface acres (about 19 square miles). The deepest point reaches about 130 feet, and the surface sits near 1,328 feet above sea level. LakeRadar pulls readings from a mapped water gauge, so current water data is shown when the station reports. For this location, LakeRadar tracks an hourly and 7-day forecast, wind and gust outlook, water readings, fishing conditions, and activity scores for boating, paddling, and swimming. Other waters in the region include East Branch Clarion River Lake, Tionesta Lake, and George B. Stevenson Reservoir. Use the conditions and forecast on this page to decide when to go boating, fishing, or paddling at Allegheny Reservoir.
Updated
No active alerts for this lake as of the last check (Oct 9, 2:13 PM EDT). Alerts are re-checked automatically; see the official source for updates.
Overall Good (89/100) across 4 activities. Best right now: Boating (93/100).
How the score is calculated →Best excellent fishing window, averaging 93/100 across these hours. Wind 5 mph from the northwest. Dusk hours (18:00 local). Derived from the hourly forecast; official alerts are not forecast and are checked separately.
| Metric | 6p | 7p | 8p | 9p | 10p | 11p | 12a | 1a | 2a | 3a | 4a | 5a | 6a | 7a | 8a | 9a | 10a | 11a | 12p | 1p | 2p | 3p | 4p | 5p |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp (°F) | 63° | 65° | 65° | 61° | 58° | 53° | 49° | 48° | 47° | 45° | 44° | 43° | 42° | 41° | 41° | 40° | 40° | 39° | 42° | 46° | 54° | 59° | 63° | 66° |
| Wind (kts) | 6 | 6 | 6 | 6 | 4 | 3 | 2 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 3 | 3 | 3 | 4 | 4 | 4 | 4 | 5 | 5 | 6 |
| Direction | W | W | W | W | NW | NW | NW | NW | N | E | SE | SE | SE | SE | SE | E | E | SE | SE | SE | SE | SE | SE | SE |
| Gusts (kts) | 10 | 10 | 10 | 10 | 6 | 4 | 3 | 2 | 2 | 2 | 2 | 4 | 5 | 5 | 5 | 6 | 7 | 8 | 9 | 9 | 9 | 11 | 11 | 13 |
| Precip % | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 1% | 1% | 1% | 1% | 1% | 1% | 1% | 1% | 1% | 1% | 1% | 1% | 1% | 1% |
| Time | Temp | Wind | Gusts | Precip | Cloud | Condition |
|---|---|---|---|---|---|---|
| Fri, 2 PM EDT | 63°F | 7 mph W (270°) | 12 mph | 0% | 3% | Sunny |
| Fri, 3 PM EDT | 65°F | 7 mph W (270°) | 12 mph | 0% | 9% | Sunny |
| Fri, 4 PM EDT | 65°F | 7 mph W (270°) | 12 mph | 0% | 16% | Sunny |
| Fri, 5 PM EDT | 61°F | 7 mph W (270°) | 12 mph | 0% | 22% | Sunny |
| Fri, 6 PM EDT | 58°F | 5 mph NW (315°) | 7 mph | 0% | 28% | Partly Cloudy |
| Fri, 7 PM EDT | 53°F | 3 mph NW (315°) | 5 mph | 0% | 35% | Partly Cloudy |
| Fri, 8 PM EDT | 49°F | 2 mph NW (315°) | 4 mph | 0% | 41% | Partly Cloudy |
| Fri, 9 PM EDT | 48°F | 1 mph NW (315°) | 2 mph | 0% | 44% | Partly Cloudy |
| Fri, 10 PM EDT | 47°F | 1 mph N (0°) | 2 mph | 0% | 47% | Partly Cloudy |
| Fri, 11 PM EDT | 45°F | 1 mph E (90°) | 2 mph | 0% | 49% | Partly Cloudy |
| Sat, 12 AM EDT | 44°F | 1 mph SE (135°) | 2 mph | 1% | 52% | Mostly Cloudy |
| Sat, 1 AM EDT | 43°F | 2 mph SE (135°) | 5 mph | 1% | 55% | Mostly Cloudy |
| Sat, 2 AM EDT | 42°F | 2 mph SE (135°) | 6 mph | 1% | 58% | Mostly Cloudy |
| Sat, 3 AM EDT | 41°F | 2 mph SE (135°) | 6 mph | 1% | 57% | Mostly Cloudy |
| Sat, 4 AM EDT | 41°F | 3 mph SE (135°) | 6 mph | 1% | 57% | Mostly Cloudy |
| Sat, 5 AM EDT | 40°F | 3 mph E (90°) | 7 mph | 1% | 57% | Mostly Cloudy |
| Sat, 6 AM EDT | 40°F | 3 mph E (90°) | 8 mph | 1% | 56% | Partly Sunny |
| Sat, 7 AM EDT | 39°F | 5 mph SE (135°) | 9 mph | 1% | 56% | Partly Sunny |
| Sat, 8 AM EDT | 42°F | 5 mph SE (135°) | 10 mph | 1% | 56% | Partly Sunny |
| Sat, 9 AM EDT | 46°F | 5 mph SE (135°) | 10 mph | 1% | 58% | Partly Sunny |
| Sat, 10 AM EDT | 54°F | 5 mph SE (135°) | 10 mph | 1% | 60% | Partly Sunny |
| Sat, 11 AM EDT | 59°F | 6 mph SE (135°) | 13 mph | 1% | 62% | Partly Sunny |
| Sat, 12 PM EDT | 63°F | 6 mph SE (135°) | 13 mph | 1% | 64% | Partly Sunny |
| Sat, 1 PM EDT | 66°F | 7 mph SE (135°) | 15 mph | 1% | 66% | Partly Sunny |
| Sat, 2 PM EDT | 67°F | 7 mph SE (135°) | 15 mph | 1% | 68% | Partly Sunny |
Official National Weather Service hourly forecast. Showing 10 of 25 hours. Wind arrows point the way the wind is blowing; the compass point and degrees show where it comes from.
| Period | This Afternoon October 9, 2026 | Tonight October 9, 2026 | Saturday October 10, 2026 | Saturday Night October 10, 2026 | Sunday October 11, 2026 | Sunday Night October 11, 2026 | Columbus Day October 12, 2026 | Monday Night October 12, 2026 | Tuesday October 13, 2026 | Tuesday Night October 13, 2026 | Wednesday October 14, 2026 | Wednesday Night October 14, 2026 | Thursday October 15, 2026 | Thursday Night October 15, 2026 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp (°F) | 65° | 39° | 67° | 50° | 59° | 55° | 67° | 56° | 67° | 46° | 59° | 40° | 60° | 46° |
| Wind | W 7 mph | E 1 to 5 mph | SE 3 to 7 mph | SE 7 to 15 mph | SE 10 to 15 mph | E 2 to 10 mph | NW 2 to 6 mph | SW 6 to 9 mph | W 9 mph | NW 10 mph | NW 8 mph | NE 6 mph | SE 7 mph | S 7 to 10 mph |
| Gusts | 12 mph | 7 mph | 15 mph | 24 mph | 29 mph | 23 mph | 13 mph | 18 mph | 22 mph | 20 mph | 16 mph | 14 mph | 17 mph | 17 mph |
| Precip % | 0% | 1% | 1% | 43% | 100% | 99% | 18% | 27% | 68% | 66% | 16% | 11% | 22% | 45% |
| Forecast |
Nearby river temperature: 65.5°F at Allegheny River at Kinzua Dam, PA (0.6 mi away) · Oct 9, 5:45 PM UTC
Good for fishing (84/100), from 5 available inputs. Supporting this: Wind 7 mph from the west. 0% chance of precipitation. Not available from a verified source for this lake: pressure trend, water temperature. Confidence is moderate (74%) because some inputs are unavailable or older than ideal.
Excellent for boating (93/100), from 4 available inputs. Supporting this: Wind 7 mph from the west. No active official alerts for this lake. Not available from a verified source for this lake: visibility and conditions, verified water access. Confidence is moderate (84%) because some inputs are unavailable or older than ideal.
Good for sailing (89/100), from 4 available inputs. Supporting this: Wind 7 mph from the W is workable but not ideal. No active official alerts for this lake. Not available from a verified source for this lake: visibility. Confidence is high (88%).
Excellent for kayaking (93/100), from 5 available inputs. Supporting this: Wind 7 mph from the west. Gusts to 12 mph. Confidence is high (90%).
Water temperature is not available from a verified source for this lake. No swimming score is shown without it.
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Individual boat ramp GPS coordinates are maintained under the jurisdiction of PA Parks & Wildlife Authority. Public boaters should verify seasonal launch water levels, gate hours, and daily vehicle/vessel fees before traveling.
Located in PA & NY, Allegheny Reservoir is a prominent freshwater reservoir known for its freshwater recreation and accessible shoreline. From open-water cruising and watersports to morning kayak tours, the lake attracts visitors throughout the warmer months. Managing stewardship is overseen by state and local natural resource agencies, ensuring sustainable multi-use access.
Valid freshwater sport fishing license issued by Pennsylvania Fish and Boat Commission (PFBC) is required for anglers age 16+. Digital license on mobile is accepted.
Current motorized watercraft registration mandatory. Practice Clean, Drain & Dry protocols: drain all livewells and inspect props before launching. Life jackets required for all passengers.
Public shoreline and boating access managed by State & Local Authorities. Verify seasonal gate hours, launch fees, and parking rules before travel.
High-speed motorboating, pontoon cruising, wakeboarding, and water skiing across main channels. Target gamefish include Brook Trout, Rainbow Trout, Brown Trout, Walleye. Morning hours typically provide optimal glassy conditions for kayak and stand-up paddleboard (SUP) touring.
Warm water temperatures, peak swimming, active watersports, and open full-service campgrounds. Highest weekly attendance; plan early arrivals on summer weekends.
Spring pre-spawn and fall feeding transitions create prime trophy angling conditions. Cooler air, lower boat traffic, and vibrant seasonal shoreline foliage.
Mild year-round outdoor climate. Uncrowded waters, active winter bass and crappie fishing, and open year-round boat launch access.
No external source rows are cited by the data currently shown on this page.
Updated
Scores are heuristics, not safety guarantees. LakeRadar scores summarize available conditions and are not a substitute for official warnings, local rules, or on-water judgment.
All telemetry for Allegheny Reservoir is synchronized directly from authorized federal and state monitoring networks (USGS, NWS, NOAA, and state environmental authorities). Observations are strictly instrumented readings — unmonitored sensors are transparently disclosed rather than synthetic estimates.
Last source audit: Oct 9, 2:13 PM EDT