Boulder Creek (Colorado)

Boulder Creek is a 31.4-mile-long (50.5 km) creek draining the Rocky Mountains to the west of Boulder, Colorado, as well as the city itself and surrounding plains.

Boulder Creek (Colorado)

Boulder Creek is a 31.4-mile-long (50.5 km) creek draining the Rocky Mountains to the west of Boulder, Colorado, as well as the city itself and surrounding plains.