Jackson Lake Dam - Credit: Wikimedia Commons
Jackson Lake Dam is a concrete and earth-fill dam in the western United States, at the outlet of Jackson Lake in northwestern Wyoming. The lake and dam are situated within Grand Teton National Park in Teton County. The Snake River emerges from the dam and flows about through Wyoming, Idaho, Oregon, and Washington to its mouth on the Columbia River in eastern Washington. Read more on Wikipedia
Source: en.wikipedia.org