Using a rangefinder to determine the height of Steamboat Geyser

In the first few minutes of Steamboat's eruptions, it has often been measured well over 300 ft. with a few exceptional eruptions measured by visitors at over 400 ft.!  In this example, done using a rangefinder by a Yellowstone National Park ranger, it comes in at 334.9 ft. For comparison, the Lower Falls of the Yellowstone is about 308 ft. and the tallest living tree, a redwood in California, is 380.1 ft.