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American River, Folsom, Sacramento County, California, 95819-6055, United States (38.60519 -121.31289)
The North Fork is the longest tributary of the American River, at 88 miles (142 km). It begins at an elevation of about 7,900 feet (2,400 m) near Lake Tahoe in Placer County at Mountain Meadow Lake, just northeast of Granite Chief and immediately due west of Squaw Valley Ski Resort. It flows westward through remote wilderness areas.