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McNenny State Fish Hatchery

McNenny State Fish Hatchery provides trout and salmon for stocking in the Black Hills, Missouri River Reservoirs and Eastern South Dakota lakes and streams. Trout and salmon are not native to South Dakota. High fishing pressure, low natural reproduction and limited food supplies create the need for stocking these species. fish raised at McNenny provide fishing opportunities to anglers of all ages.

Approximately 3.5 million gallons of water flow through the hatchery each day or about 2,500 gallons every minute. After flowing through the rearing units, the water passes through two settling ponds before eventually flowing in to Crow Creek. The hatchery uses this water to produce around 60,000 pounds of trout and salmon each year.

The goal of McNenny State fish Hatchery is to maximize angler satisaction. To accomplish this goal, McNenny emphasizes fish qualifty and post- stocking survival.

Much more happens at McNenny than just rearing fish. McNenny has a history of scientific research. Controlled experimentation at McNenny is changing the world of aquaculture. Hatchery staff often collaborate with fisheries managers, universities and other agencies (statewide, nationwide and internationally).

Fish rearing units


  • 8 covered raceways; each divided into three sections
  • 3 spring-fed production ponds
  • 1 natural sinkhole display pond (121 feet deep!)


  • 28 indoor above ground circular tanks
  • 6 indoor below ground circular tanks
  • Vertical incubation trays
  • Upwelling incubation jars
  • 18 small experimental tanks


  • Open Monday - Friday from 8 a.m.- 4 p.m.
  • From South Dakota I-90, take Exit 2 near the Wyoming border and follow the signs.
  • Interpretive signs on the hatchery grounds allow for self-guided tours.
  • Tours of the facility are available for large groups, but must be scheduled in advance.
  • McNenny State Fish Hatchery
    19619 Trout Loop
    Spearfish, SD 57783
    Phone: 605.642.6920


Volunteer opportunities abound at McNenny. Local community members, retirees, Boy Scouts and students have all used their talents to improve hatchery operations.

Volunteers are welcome to help with fish rearing, tagging and marking, spawning, stocking, landscaping and educational outreach. Contact the hatchery at the phone number listed above to learn more about volunteer opportunities.

Display Pond

An underwater view of the fish in McNenny State Fish Hatchery's display pond.

Fish Spawning

Fish spawning and production takes place each spring on selected South Dakota waters. These video highlights the work our biologists do to supplement natural reproduction of walleye and salmon.