PA Lake Fishing Almanac · lakepa.net
Lake Wilhelm
Mercer County · 1,739 acres · State park
Latest PFBC survey (April 2024)
- Trap nets captured 100 Walleye at 0.16 fish per net hour. (p. 3)
- Biologists captured 191 adult Muskellunge measuring 26 to 49 inches. (p. 4)
- The catch included 140 Channel Catfish measuring 5 to 34 inches. (p. 2)
- Night electrofishing captured 473 Largemouth Bass at 157.7 fish per hour. (p. 7)
PFBC Biologist Report: Lake Wilhelm
On PFBC's 2026 trout schedule (as published Oct 4, 2026)
Not on the 2026 schedule.
Fish consumption advice (2026 list)
No lake-specific row.
Statewide: “Pennsylvania has issued a general, statewide health advisory for recreationally caught sport fish: eat no more than one meal (1/2 pound) per week of sport fish caught in the state’s waterways.”
Special regulations (2026 Fishing Summary)
- Brood Stock Lakes Program: From April 1 through May 31, Muskellunge, Tiger Muskellunge, Northern Pike and pickerel are catch and release only; none may be kept. Other species follow Commonwealth inland waters rules. (2026 Fishing Summary, p. 15)
Printed Nov 2, 2026. Data as of Oct 4, 2026. Regulations summarized — official Summary and posted signs govern.