Dam Number 4 (us-maryland)
Type: waterway=dam
Coordinates: 39.4947096636046, -77.82681374128208
Area: 0.00403508203125 km²
OSM tags:
alt_name: Potomac River Dam #4
ele: 99
gnis:feature_id: 1714061
name: Dam Number 4
ref:US:NID: MD00078
waterway: dam