Flat Creek, nestled within the National Elk Refuge, serves as a vital spawning tributary for the Snake River Fine Spotted Cutthroat. Accessible for fishing only from August 1 to October 31, this section of Flat Creek offers anglers a unique challenge and rewarding opportunities to target larger specimens of Snake River Fine Spot Cutthroat.

Primarily inhabited by adult cutthroat, Flat Creek presents anglers with demanding sight fishing conditions. Techniques range from presenting hoppers along the banks to delicately casting small dry flies. While the fish population is abundant, they are notoriously wary of fishing activity, requiring a skilled approach. As such, landing a couple of fish is often considered a triumph.

Once hooked, these cutthroat exhibit remarkable tenacity, often seeking refuge under cutbanks and testing the angler's skill and patience. Known for their intelligence and size, the residents of Flat Creek offer a formidable challenge, making it an ideal destination for seasoned anglers to showcase their expertise.