Construction of the Spring Shelter was further enhanced by the discovery of a nearby artesian spring, and the Civilian Conservation Corps completed the shelter in 1938 after adding pipework to bring in the water. Company 556 of the CCC, assigned to Pokagon State Park, built this and other classic park structures while also carrying out infrastructure and erosion control projects. CCC enrollee Roger Woodcock called the Spring Shelter their "pride and joy," reflecting the pride and enjoyment the workers took in their work. People have enjoyed the spring's fresh cold water for years, and the water is tested regularly for purity but is not treated.