Jackson Lake Dam in Grand Teton National Park, which raises the elevation of the natural glacial Jackson Lake by 30 feet (9.1 m), with a storage capacity of 847,000 acre feet (1.045 km3).[1] Grassy Lake Dam is located in Wyoming in Bridger-Teton National Forest between Yellowstone National Park and Grand Teton National Park, directly adjacent to the south boundary of Yellowstone.