Lake Size: 3.75 mi
Latitude: 39.45
Longitude: -76.566667
Counties: Baltimore County

Information: The reservoir began as ordinance 141 of the Baltimore City Council in 1908, and the initial funding of $5,000,000 USD. The dam was constructed between 1912 and 1914 and when completed its crest was 188 feet (57 m) above mean sea level, and 51 feet (16 m) from the original valley floor. The dam consisted of 50,800 cubic yards (38,800 m3) of concrete and impounded 1.5 billion gallons. Seven miles of new roads were constructed as well as two new bridges. Additionally a 12-foot (3.7 m) wide tunnel was built at a length of 1,623 feet (495 m) from the upper to the lower dam, which connected with the main tunnel running seven miles (11 km) to Lake Montebello in Baltimore.