Palouse Falls is a waterfall in the northwest United States on the Palouse River, about four miles upstream of its confluence with the Snake River in southeast Washington. Within the 94-acre Palouse Falls State Park, the falls are 200 feet in height, and consist of an upper fall with a drop around twenty feet, which lies 1,000 feet north-northwest of the main drop, a…Palouse Falls is a waterfall in the northwest United States on the Palouse River, about four miles upstream of its confluence with the Snake River in southeast Washington. Within the 94-acre Palouse Falls State Park, the falls are 200 feet in height, and consist of an upper fall with a drop around twenty feet, which lies 1,000 feet north-northwest of the main drop, and a lower fall.