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Lake Arthur (Moraine State Park) fishing almanac

Northwest region Butler County

At a glance

Size and owner
3,224 acres · State park — PFBC data, retrieved Oct 4, 2026
Agency page
Moraine State Park Page (pa.gov)
Special regulations
Big Bass Program — 2026 Fishing Summary, p. 11
PFBC Best Fishing Waters
Common Carp, Channel Catfish, Striped Bass and Hybrid Striped Bass — list of Nov 2024
Latest PFBC survey
April 2022 (4 years ago)
On the 2026 trout schedule
No (as published Oct 4, 2026)
Fish-consumption advisory
No lake-specific row in the 2026 list
Ice-fishing list
On PFBC's ice-fishing destination list (retrieved Oct 4, 2026)

Lake Arthur (Moraine State Park) covers 3,224 acres in Butler County, in a state park. PFBC biologists last reported on it in April 2022. The 2026 advisory has no lake-specific row for it; the statewide one-meal-a-week advice applies.

What PFBC biologists found

Apr 2022 survey · 4 years ago

PFBC biologist report

Gear: trap nets

PFBC's plan, in our words: PFBC will monitor Muskellunge abundance and growth with trap net surveys, with the next survey scheduled for 2025. (p. 3)

PFBC Biologist Report: Lake Arthur 2022 (2022), p. 2

May 2016 survey · 10 years ago

PFBC biologist report

Gear: trap nets, night electrofishing

PFBC's plan, in our words: PFBC plans 4 additional shoreline habitat improvement projects. (p. 4)

PFBC Biologist Report: Lake Arthur Spring 2016 Trapnet and Night Electrofishing Surveys (2016), p. 2

Findings are our short summaries of one survey at one time. Every number was checked against the cited page of PFBC's report. We don't rate lakes.

On PFBC's 2026 trout-stocking schedule

Lake Arthur (Moraine State Park) is not on PFBC's 2026 adult trout schedule (as published Oct 4, 2026).

Fish consumption advice (2026 list)

No lake-specific advice for Lake Arthur (Moraine State Park) in the 2026 list.

Statewide advice: “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.”

“People who regularly eat sport fish, women of childbearing age and children are particularly susceptible to contaminants that build up over time.”

DEP: “The advisory listing was current at the time this summary went to press. Fish consumption advisories may have been issued or lifted since that time.”

DEP fish consumption advisories Before you go: check DEP's harmful algal bloom page

Quoted word for word from the advisory for the year shown; advisories may have been issued or lifted since. Not medical advice.

Special fishing regulations (2026 Fishing Summary)

Big Bass Program

2026 Summary p. 11

Largemouth, Smallmouth and Spotted Bass: 15-inch minimum and 4 a day (combined) from Jan. 1 through April 10 and from June 13 through Dec. 31; catch and immediate release only from April 11 through June 12, with no tournaments. Other species follow inland rules.

2026 Fishing Summary, p. 11

PFBC lists this lake for its cast-net and throw-net permit rules; a permit is required (2026 Summary, p. 8). PFBC

Summarized. The current Pennsylvania Fishing Summary, 58 Pa. Code and posted signs govern.

Habitat plan and ice-fishing list

PFBC habitat-improvement map (PDF) — PFBC's map of fish-habitat structures placed or proposed in this lake.

Check posted rules and current conditions before you go.

On PFBC's ice-fishing destination list (retrieved Oct 4, 2026). Species PFBC lists for ice fishing here: Largemouth Bass, Smallmouth Bass, panfish, Muskellunge, Walleye, Northern Pike, Channel Catfish.

This site has no ice reports; conditions change daily; never assume ice is safe.

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Questions about Lake Arthur (Moraine State Park)

Can you eat fish from Lake Arthur (Moraine State Park)?

The 2026 advisory has no lake-specific row for Lake Arthur (Moraine State Park). The statewide advice — no more than one meal (1/2 pound) a week of sport fish — still applies. Not medical advice.

What fish are in Lake Arthur (Moraine State Park)?

PFBC's April 2022 survey recorded: Muskellunge, Hybrid Striped Bass, Walleye, Channel Catfish, Flathead Catfish, Bluegill, Pumpkinseed, Black Crappie, White Crappie, Yellow Perch, Northern Pike, Alewife, Bullhead, Carp, Gizzard Shad, Golden Shiner. Surveys record what biologists caught with their gear on those days, not everything in the lake.

Is Lake Arthur (Moraine State Park) a Big Bass lake?

Yes. PFBC's special-regulation data and the 2026 Fishing Summary (p. 11) list it in the Big Bass Program: Largemouth, Smallmouth and Spotted Bass: 15-inch minimum and 4 a day (combined) from Jan. 1 through April 10 and from June 13 through Dec. 31; catch and immediate release only from April 11 through June 12, with no tournaments. Other species follow inland rules.


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Sources for this page: PFBC Lakes_Point (Oct 4, 2026); PFBC biologist reports (area pages, Oct 4, 2026); PFBC adult trout schedule (as published Oct 4, 2026); DEP/PFBC fish consumption advisory (2026 list, updated Feb 27, 2026); PFBC special-regulation data (Mar 2026); 2026 Pennsylvania Fishing Summary. All sources

Last data import Oct 5, 2026