Boulder Falls is a 40-foot waterfall on North Boulder Creek in Boulder County, Colorado, in the Southern Rockies region. It lies about 6.4 miles northeast of Nederland and roughly 7.2 miles west of Boulder as the crow flies.
At 40 feet it is on the modest side for Colorado, where the typical waterfall with a recorded height stands around 65 feet; it ranks 104th of 162. The tallest single drop is 20 feet. By form it is a tiered waterfall, falling in several distinct steps one after another. It falls in 2 drops.
The Southern Rockies are high, rugged mountains with alpine peaks, spruce-fir and lodgepole forest, aspen groves and glacial valleys. Snowmelt drives strong spring flows over granite and volcanic cliffs.
Boulder County holds 13 recorded waterfalls, and several are close by. South Boulder Creek Falls, a 17-foot tiered waterfall, is about 6.6 miles away. Jasper Creek Falls, a tiered waterfall, is about 11.5 miles away. Timberline Falls, a cascade waterfall, is about 12.1 miles away.
Boulder Falls is located at 40.0065° N, 105.4061° W. The listing is based on the World Waterfall Database, one of the sources compiled by the U.S. Geological Survey in its inventory of waterfalls and rapids of the conterminous United States. The creek name is confirmed against the federal Geographic Names Information System. The position was verified on aerial imagery. Details on trails, parking and access have not been documented for this waterfall yet.