Big Goose Creek

Big Goose Creek is a significant waterway in Sheridan County, Wyoming. The creek originates from Park Reservoir, southwest of Sheridan in the Bighorn Mountains. It flows northeasterly through canyons on the east face of the mountains before eventually reaching the Powder River Basin. The creek is the primary water source for Sheridan and the surrounding communities. In the town of Sheridan, it joins "Little Goose Creek" near Dow and Val Vista Street.

The creek’s upper reaches cut through Precambrian basement rock, consisting primarily of quartz monzonite and gneiss. Once it reaches the canyons of the Bighorns, it flows through Bighorn Dolomite and the fossil-rich Madison Limestone. Once across the Bighorn Fault, the creek enters the Powder River Basin, where the gradient decreases and the stream begins to meander through the Eocene-aged Wasatch Formation.