Upper Diamond Lake is a lake located in Boulder County, Colorado. It appears on the East Portal USGS 7.5-minute topographic quadrangle. The nearest populated place is Grand Island (historical), approximately 4.0 miles to the ESE.
Boulder County · Colorado
Upper Diamond Lake is a lake located in Boulder County, Colorado. It appears on the East Portal USGS 7.5-minute topographic quadrangle. The nearest populated place is Grand Island (historical), approximately 4.0 miles to the ESE.