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The short answer
Lightning Lake was last stocked on September 26, 1956: 10,310 Golden Trout (1 in avg).
County Sweet Grass Species on record Golden Trout Records 1 stocking event Official source Montana Fish, Wildlife & Parks report Location map
Lightning Lake location context Approximate · county context Beaverhead County Big Horn County Blaine County Broadwater County Carbon County Carter County Cascade County Chouteau County Custer County Daniels County Dawson County Deer Lodge County Fallon County Fergus County Flathead County Gallatin County Garfield County Glacier County Golden Valley County Granite County Hill County Jefferson County Judith Basin County Lake County Lewis and Clark County Liberty County Lincoln County Madison County McCone County Meagher County Mineral County Missoula County Musselshell County Park County Petroleum County Phillips County Pondera County Powder River County Powell County Prairie County Ravalli County Richland County Roosevelt County Rosebud County Sanders County Sheridan County Silver Bow County Stillwater County Sweet Grass County Teton County Toole County Treasure County Valley County Wheatland County Wibaux County Yellowstone County MT Lightning Lake, Sweet Grass County Lightning Lake Picket Pin Lake, North, Sweet Grass County Picket Pin Lake, North Blue Lake, Sweet Grass County Blue Lake Rainbow Lake #2, Sweet Grass County Rainbow Lake #2 Rainbow Lake #3, Sweet Grass County Rainbow Lake #3 Rainbow Lake #4, Sweet Grass County Rainbow Lake #4 Rainbow Lake 5, Sweet Grass County Rainbow Lake 5 Rainbow Lake 6, Sweet Grass County Rainbow Lake 6 Sunken Rock Lake, Sweet Grass County Sunken Rock Lake Sweet Grass County
Pins use the finest location published with the stocking record. County-level pins show area context, not an exact access point; confirm access and directions with the official agency source.
Looking for a different Lightning Lake? Also on record: Lightning Lake (Custer County, Idaho) · Lightning Lake (Yakima County, Washington)
Agency records
Full stocking history Date Species Fish Size Hatchery September 26, 1956 Golden Trout 10,310 1 in avg Yellowstone River Trout Hatchery
Records shown exactly as published by Montana Fish, Wildlife & Parks. An event missing here does not mean the
water was not stocked - some plants go unreported or are published elsewhere.
Nearby stocked waters
Data source: Montana Fish, Wildlife & Parks .
Last updated: 2026-07-24 .
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