StockedTrout

Mammoth Lake

Westmoreland County · Pennsylvania · lake — last stocked Apr 21, 2026

Regulation
Stocked Trout Waters

Where it is

Westmoreland CountyDonegal LakeFourmile Run (Section 3)Fourmile Run (Section 4)Hannas Run (Section 2)Hendricks Creek (Section 2)Indian Creek (Section 2)Indian LakeJacobs Creek (Section 3)Keystone LakeLinn Run (Section 2)Loyalhanna Creek (Section 2)Loyalhanna Creek (Section 3)Loyalhanna Creek (Section 4)Loyalhanna Creek (Section 5)Mill Creek (Section 2)Northmoreland LakeSewickley Creek (Section 2)Shannon Run (Section 2)Tubmill Creek (Section 2)Twin Lakes Number One Reservoir - lower twin lakeTwin Lakes Number Two Reservoir -upper twin lakeMammoth Lake
Mammoth Lake in Westmoreland County. Other stocked waters in the county are faint; click any to open it.

Directions in Google Maps · Apple Maps · 40.2138, -79.4557

Scheduled

DateSpeciesMeet the truck
Oct 13, 2026Rainbow TroutIndian Lake, 12:00 PM

"Meet the truck" is where volunteers gather to help float-stock; the hatchery truck starts there.

Stocking history

DateSpeciesHatchery
Apr 21, 2026Rainbow TroutPleasant Gap
Apr 10, 2026Rainbow TroutPleasant Gap
Apr 10, 2026Golden Rainbow TroutPleasant Gap
Mar 4, 2026Rainbow TroutPleasant Gap
Mar 4, 2026Golden Rainbow TroutPleasant Gap

Source

Records published by Pennsylvania state agency. Schedules change — confirm before you go.

Westmoreland County · All Pennsylvania stocked waters