What are the major bodies of water in the west region?

In the western region of the United States, some major bodies of water include the Pacific Ocean, the Great Salt Lake in Utah, the Colorado River, and the Columbia River. The Pacific Ocean is the largest body of water in the region and influences the climate of coastal states like California and Oregon. The Great Salt Lake is the largest saltwater lake in the Western Hemisphere, and the Colorado River and Columbia River are important waterways that provide water for irrigation and hydroelectric power.