Mariposa Creek, originally called the Mariposa River, is a creek that has its source in Mariposa near the town of Mariposa, California, United States that flows through that town southwest through the Sierra foothills, into and across the San Joaquin Valley in Merced County, into the sloughs of the San Joaquin River south of Merced, California.
During the California Gold Rush, the Mariposa River was a rich gold-bearing creek and the site of several mining camps, including Logtown, Mariposa and Mariposita.
Coordinates: 37°14′55″N 120°18′34″W / 37.24861°N 120.30944°W
The name "Mariposa" means "butterfly" in Spanish. Source: http://www.spanishdict.com/translate/mariposa