| Balancing rock | |
 Omak Rock with Omak Lake in the background | |
| Coordinates | 48°14′06″N 119°22′02″W / 48.23507°N 119.36731°W |
|---|---|
| Composition | |
| Granite | |
Omak Rock, also known as Balance Rock,[1][2] is a balancing rock in the Colville Indian Reservation, in the U.S. state of Washington. Located within the Greater Omak Area of the Okanogan Country, the glacial erratic is about 1,340 feet (410 m) from Omak Lake.[3][4] It is positioned within the vicinity of the 1872 North Cascades earthquake, which it survived. The fact of its survival has been the basis of studies to help determine the acceleration and intensity of the quake. Some believe that the epicenter of the earthquake may have been very close to Omak Rock.[5] The Confederated Tribes of the Colville Reservation believe that the rock represents a symbol of nature's perfection in the region.[6]
- ^ Irwin, Mike (April 6, 2010). "Geology field trip: Balance Rock". The Wenatchee World.
- ^ "Graphical Locater Result". Montana State University. Archived from the original on December 31, 2013. Retrieved January 1, 2013.
- ^ Camp, Al; Thew, Chris; Camp, Dee (September 5, 2007). "Fire scorches hills around Omak Lake". Omak–Okanogan County Chronicle. Archived from the original on January 30, 2013. Retrieved January 1, 2013.
- ^ Williams, Norm (May 26, 2010). "Photo of the Day – Omak Lake Balancing Rock". Omak–Okanogan County Chronicle. Retrieved January 1, 2013.[permanent dead link]
- ^ Weichert, Dieter (April 1, 1994). "Omak rock and the 1872 Pacific Northwest earthquake". Bulletin of the Seismological Society of America. 84: 444–450. Retrieved January 1, 2012.
- ^ "Huge Balancing Rock near Omak Lake". Confederated Tribes of the Colville Reservation. Archived from the original on August 3, 2013. Retrieved August 3, 2013.