Did you know that the warmest scuba diving in the United States can be found in…Utah? Yes, this landlocked state, known for its snow, mountains, and skiing, takes the cake when it comes to warm water scuba diving in the USA, despite being nearly 700 miles away from the ocean. Welcome to the Crater at Homestead, a unique geothermal hot springs, home to mineral rich freshwater that maintains a very comfy 90-96 Fahrenheit temperature year round.