Montana Fishing

Big Therriault Lake

For Montana fishing enthusiasts, Big Therriault Lake stands out as a abundant destination known for Largemouth Bass, Walleye, Northern Pike. Big Therriault Lake is located near western Montana at coordinates 48.93, -114.88. The abundant lake provides stable water levels and diverse habitat for Largemouth Bass, Walleye, Northern Pike. Local anglers frequently report success with Largemouth Bass, Walleye, Northern Pike at Big Therriault Lake.

Lake Montana 48.9300, -114.8800
Updated 2026-04-29

Location

View on Google Maps 48.9300, -114.8800

Target Species

Largemouth BassLargemouth BassWalleyeWalleyeNorthern PikeNorthern Pike

Fishing Tips

  • Focus on dam faces during first light when Largemouth Bass are active.
  • Focus on rock humps during dawn when Largemouth Bass are active.
  • Focus on shallow flats during dusk when Largemouth Bass are active.

Fishing Techniques for Big Therriault Lake

Medium-action spinning gear paired with 8-12 lb test line covers most situations at this lake. Soft plastics, crankbaits, and live bait rigs all produce consistent results depending on conditions. For Largemouth Bass, try matching the local forage — shad, bluegill, or crawfish patterns work well here.

What to Expect at Big Therriault Lake

Take time to read the water when you arrive — baitfish activity, bird movement, and surface disturbances all signal where fish are feeding. The character of this lake changes with the seasons, so repeat visits often reveal new patterns and productive spots you missed before.

Regulations

Montana fishing license required. Verify regulations with Montana Fish, Wildlife and Parks before fishing.

Fishing Tips for Big Therriault Lake

Baboon Lake

Bluebird Lake

Bass Lake

Frequently Asked Questions

Success depends on technique, season, and conditions. Local fishing reports provide updates.

Check with Montana Fish, Wildlife and Parks for stocking schedules and seasons at Big Therriault Lake.

Big Therriault Lake is located in western Montana, making it accessible from nearby population centers.