Crawfish Creek is a short stream in Yellowstone National Park in the U.S. state of Wyoming This watercourse is known for its unusually warm temperatures compared to other surface water bodies in Wyoming; these elevated temperatures enable crawfish to thrive in the water. Summer water temperatures are in the range of 22 to 24 degrees Celsius; pH levels are typically about 9.1, or somewhat alkaline. The warm waters come from a southern portion of the Yellowstone volcanic zone which produces hot water from hot springs and fumaroles in the area.