Lake Eufaula is a 102,500-acre U.S. Army Corps of Engineers reservoir on the Canadian River in eastern Oklahoma — the largest lake in Oklahoma by surface area and one of the largest Corps of Engineers reservoirs in the United States. The lake stretches across McIntosh, Pittsburg, Haskell, and Latimer counties in the rolling eastern Oklahoma hills with 600 miles of shoreline that supports a large marina community and year-round boating economy centered on Eufaula, Checotah, and McAlester. Lake Eufaula’s sheer size — 102,500 acres at full pool — creates a boating experience that rewards planning and navigation preparation, with the Canadian River arm extending deep into the eastern Oklahoma hill country and numerous creek arms providing sheltered cove fishing and anchoring throughout the reservoir. Largemouth bass are the primary tournament target and Lake Eufaula draws organized bass tournament events from across Oklahoma and the surrounding region throughout the spring and fall seasons. Crappie, catfish, white bass, and hybrid striper round out a productive warmwater fishery. Find Boat Services lists verified boat repair, motor service, electronics installation, fiberglass repair, trailer service, and winterization providers serving Lake Eufaula within 40 miles across eastern Oklahoma.