Great Divide Basin

The Great Divide Basin or Great Divide Closed Basin is an area of land in Wyoming's Red Desert (United States) where none of the water falling as rain to the ground drains into any ocean, directly or indirectly. It is therefore considered an endorheic basin, and it adjoins the Continental Divide in southern Wyoming. To the west of the basin is the Green River watershed, draining to the Gulf of California/Pacific Ocean; to the east is the North Platte watershed, draining to the Gulf of Mexico/Atlantic Ocean. The basin is very roughly rectangular in shape; the northwest corner is in the Wind River Range near South Pass, about 40 miles southwest of Lander, and the southeast corner is in the Sierra Madre Range near Bridger Pass, about 20 miles southwest of Rawlins.