Big Spring, located in the heart of the Missouri Ozark National Scenic Waterways System, is the largest spring in Missouri. Did you know it is also the largest freshwater spring in the United States? 278 million gallons of water gush from the spring via subterranean passages. It then continues to the Current River. Experiments have been done in which hamless die is placed into the ground to see how far the water would carry it before it dissipated. It was found that it can travel from as far as forty five miles away through underground passages before surfacing at Big Spring. If you like peace and serenity, this is the place. The constant rush of water over the rocks makes for a nice interlude and escape from everyday stress. The scenery surrounding the Spring is gorgeous, especially in the fall months.