The Knolls is a populated place located in Calvert County, Maryland. It appears on the Prince Frederick USGS 7.5-minute topographic quadrangle. The elevation at this location is approximately 132.69 feet (40.44 m) above sea level.
Calvert County · Maryland
The Knolls is a populated place located in Calvert County, Maryland. It appears on the Prince Frederick USGS 7.5-minute topographic quadrangle. The elevation at this location is approximately 132.69 feet (40.44 m) above sea level.