<Li> The Owens Valley in the United States, behind the Sierra Nevada range in California . </Li> <Li> The aptly named Death Valley in the United States, behind both the Pacific Coast Ranges of California and the Sierra Nevada range, is the driest place in North America and one of the driest places on the planet . This is also due to its location well below sea level which tends to cause high pressure and dry conditions to dominate due to the greater weight of the atmosphere above . </Li> <Li> The Colorado Front Range is limited to precipitation that crosses over the Continental Divide . While many locations west of the Divide may receive as much as 40 inches (1,000 mm) of precipitation per year, some places on the eastern side, notably the cities of Denver and Pueblo, Colorado, typically receive only about 12 to 19 inches . Thus, the Continental Divide acts as a barrier for precipitation . This effect applies only to storms traveling west - to - east . When low pressure systems skirt the Rocky Mountains and approach from the south, they can generate high precipitation on the eastern side and little or none on the western slope . </Li> <Li> The Shenandoah Valley of Virginia, wedged between the Appalachian Mountains and the Blue Ridge Mountains and partially shielded from moisture from the west and southeast, is much drier than the very humid remainder of Virginia and the American Southeast . </Li>

The rain shadow effect would be most evident in which direction relative to the rocky mountains
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