Impounding Basin Number Twenty-One is a basin located in Montgomery County, Pennsylvania. It appears on the Valley Forge USGS 7.5-minute topographic quadrangle. The nearest populated place is Valley Forge, approximately 0.7 miles to the SW.
Montgomery County · Pennsylvania
Impounding Basin Number Twenty-One is a basin located in Montgomery County, Pennsylvania. It appears on the Valley Forge USGS 7.5-minute topographic quadrangle. The nearest populated place is Valley Forge, approximately 0.7 miles to the SW.