Big Springs Trout Hatchery

Big Springs Trout Hatchery

Located just a few miles southeast of town, this spot is a perfect casual hangout and has something for everyone. The first thing you’ll notice when arriving at the park is a large shelter and picnic tables surrounded by lush grass and trees. This pavilion is great for a quick afternoon picnic, or it can be reserved for the day (with a $20 fee) and is used for everything from wedding receptions to retirement parties. Just north of the picnic area, the famous Big Spring Creek cuts a cool, bubbling path through the greenery. For a relaxing evening walk, follow the dirt trail that runs over the bridge and across the stream to tour the rest of the park. 

Continuing on that path for about a quarter mile will take you to Montana’s largest cold-water trout hatchery. In this part of the park, visitors can view the outdoor raceways where juvenile rainbow, Yellowstone cutthroat, and brown trout are raised. A highlight of the hatchery for kids (and, if we’re being honest, adults too) is the outdoor round pond, where you can purchase a handful of fish food to provide a treat for the nearly one dozen huge trout that are kept in the pool.

After visiting and feeding the fish, be sure to finish exploring the walking loop. The second half of this short trail will take you to stone bridges and ponds built nearly a century ago. The bubbling springs, aquatic plants, mossy concrete, and flourishing trees make for a picture-perfect scene that seems to have come straight out of a fairy tale. What’s more interesting is that Big Spring Creek, which runs through the park, provides water for the entire city of Lewistown, with very little purification needed, which isn’t hard to believe once you’ve seen how clear and clean the water is.

Although the hatchery and park are open 365 days a year from sunrise to sunset, we certainly suggest finding some time to explore here before the temperature starts to drop, so you can enjoy all it has to offer. Big Springs Trout Hatchery is an incredible backdrop for company picnics, date nights, family pictures, evening walks with friends, and so much more. It’s just one more hidden treasure to explore in Central Montana.  

About The Hatchery

Big Springs Trout Hatchery is the largest coldwater production hatchery in Montana, capable of producing up to two million fish annually weighing 160,000 pounds. These fish are planted in about 100 different waters throughout the state. Species of trout and salmon raised at the hatchery vary year to year but may include different strains of Rainbow, Yellowstone Cutthroat, Grayling, Brown Trout, Chinook salmon and Kokanee salmon. No fish are spawned at this hatchery. Instead, eggs are received from other Montana state and federal hatcheries and from some wild sources. 

The upper unit has egg incubation and indoor raceways where eggs are hatched. Typically, fish are raised inside to about two inches and then moved into outdoor raceways at the upper or lower unit for more growth. The size of fish stocked ranges from one to twelve inches but averages between four and eight inches depending on what the biologists want. Stocking starts in April and continues through July, then again in September through October. 

The hatchery grounds are open to the public every day of the week, dawn to dusk. The public can view fish in the raceways but are encouraged not to feed or bother the fish. There is a circular display pond at the upper unit where people can buy a handful of fish food and feed these fish. The City of Lewistown maintains a park adjacent to the upper unit. This park has a baseball field, shaded picnic area and the beautiful spring area. Wildlife viewing includes deer and other small mammals and a variety of birds.


  • Garbage Bins
  • Grill (Ring)
  • Information Kiosk/Map
  • Picnic Table
  • Sheltered
  • Toilet (Vault)
  • Volleyball Court
  • Baseball Field 

Primary Activities

How to Get There

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