[2] Although modest in elevation, relief is significant as the summit rises 2,000 feet above the head of Coldwater Creek valley in 0.6 mi (0.97 km).

The history of the formation of the Cascade Mountains dates back millions of years ago to the late Eocene Epoch.

[5] Geological events occurring many years ago created the diverse topography and drastic elevation changes over the Cascade Range leading to various climate differences.

During the Pleistocene period dating back over two million years ago, glaciation advancing and retreating repeatedly scoured and shaped the landscape.

[6] Mount Whittier is located in the marine west coast climate zone of western North America.