Keystone Lake fishing almanac
Southwest region Armstrong County
At a glance
- Size and owner
- 950 acres · Other owner — PFBC data, retrieved Oct 4, 2026
- Special regulations
-
Big Bass Program — 2026 Fishing Summary, p. 11
- PFBC Best Fishing Waters
- Common Carp, Muskellunge — list of Nov 2024
- 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)
Keystone Lake covers 950 acres in Armstrong County. The 2026 advisory has no lake-specific row for it; the statewide one-meal-a-week advice applies. It is in PFBC's Big Bass Program (2026 Fishing Summary).
On PFBC's 2026 trout-stocking schedule
Keystone Lake is not on PFBC's 2026 adult trout schedule (as published Oct 4, 2026).
Fish consumption advice (2026 list)
No lake-specific advice for Keystone Lake 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.
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, Trout (stocked), panfish, Muskellunge, Walleye.
This site has no ice reports; conditions change daily; never assume ice is safe.
Local bait & guides (sponsored)
Sponsored · advertiser-supplied · not verified by this site; not affiliated with or endorsed by PFBC
Questions about Keystone Lake
Can you eat fish from Keystone Lake?
The 2026 advisory has no lake-specific row for Keystone Lake. The statewide advice — no more than one meal (1/2 pound) a week of sport fish — still applies. Not medical advice.
Is Keystone Lake 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.
Sources for this page: PFBC Lakes_Point (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