Grand Prismatic Spring, located in Midway Geyser Basin, has the distinction of being the park’s largest hot spring.
Grand Prismatic Spring is located in Yellowstone National Park, halfway between the Upper and Lower Geyser Basins. The central location provides dramatic scenery for visitors and residents alike. The spring is approximately 90 meters wide and 50 meters deep and expels an estimated 560 gallons of water per minute. Grand Prismatic Spring is noted for being the largest hot spring in Yellowstone National Park and third largest in the world.