BIOLOGIST REPORT

Keystone Lake  


Spring sampling in 2001 at Keystone Lake (Armstrong/Indiana Counties) produced extremely positive results.  Past stockings of brook trout have produced high numbers of brook trout ranging from 8 to 10 inches in length. Night electrofishing efforts verified the high numbers of brook trout as well as high numbers of rainbow smelt.  The smelt were introduced in the late 1980's and early 1990's and are self sustaining. Spring night electrofishing produced high numbers of walleye as well.  The majority of walleye ranged from 18 through 24 inches, however fair numbers of walleye ranging from 27 to 30 inches were also encountered.  These walleye were without doubt some of the heaviest encountered during walleye sampling efforts over the past two decades.

Trapnet efforts continued to produce quality size walleye and legal brook trout.  No smelt were observed during trapnet efforts.  Seven tiger muskellunge were sampled by trapnet and they ranged from 708 through 1295 mm (27.8 - 50.98 inches).  Four of the seven tigers were of legal size.  Black and white crappie were just becoming active and some of the early anglers were doing well with fair numbers of crappie being present, including good representation in the 9 to 13 inch size groups.  Bluegill were not present in high numbers and most were less than 8 inches in length.  Good numbers of smallmouth bass were encountered.  Keystone Lake appears to be home for numerous quality sized walleye, tiger muskellunge, and smallmouth bass.  Additional sampling will be done in late May to evaluate both small and largemouth bass.

-- Fisheries Management Area 2

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