The Comal River became famous when Ripley's Believe It or Not featured it as the shortest river in the world. The 2.5-mile river rises from Comal Springs in Landa Park where it fuels a swimming pool, past Schlitterbahn, and meets the Guadalupe River in the heart of downtown New Braunfels. The Comal is more popular with tubers and swimmers, while the Guadalupe is more choppy and rapid and is favored by canoeists. The Comal is one of the largest springs in Texas with 8 million gallons of water flowing through every hour. The water is pure, clear and cold, about 23-29 Celsius.