Palouse Falls, with a height of 198 feet, was formed when the Missoula Floods, occurring several times over the 200-year period between 15,000 and 13,000 years ago, produced a series of waterfalls along the Palouse River before it entered the Snake River. At the heart of a rock-rimmed amphitheater, the Palouse River takes a plunge into a deep green pool, creating a spectacular natural sight. Scientists have found evidence of at least twenty-five massive floods, the largest discharging 2.6 billion gallons a second. The peak flow of the largest floods is estimated to be 40 to 60 cubic kilometers per hour(9 to 14 cubic miles per hour). The last of the waterfalls left by glacial floods, the Palouse Waterfall sits in the heart of a rock-rimmed amphitheater, dropping its water into a deep green pool. Virtually in the middle of nowhere, it’s one of the most dramatically beautiful falls in the state.