One of the reasons to visit Olympic National Park is that it is one of the most unique biomes in the continental United States, if not the world. Although there are many factors that have led to Olympic National Park becoming such a unique location, one of the factors has been the frequent and abundant rainfall that the region has received throughout the years. Even though rainfall totals vary, in general, the park receives at least 140 inches of rain per year; and all of the rainfall that the park receives has also led to the formation of large rivers, and spectacular waterfalls. While the park has many accessible waterfalls that visitors can view and explore, the easiest waterfall to view and visit is Merriman Falls, even though the waterfall is technically slightly outside of the park’s boundaries in the Olympic National Forest.