U.S. Army Corps of Engineers, Baltimore District:
Dalecarlia Reservoir
U.S. Army Corps of Engineers, Baltimore District:
Dalecarlia Reservoir
U.S. Army Corps of Engineers, Baltimore District:
Dalecarlia Reservoir
U.S. Army Corps of Engineers, Baltimore District:
Dalecarlia Reservoir
U.S. Army Corps of Engineers, Baltimore District:
Dalecarlia Reservoir
U.S. Army Corps of Engineers, Baltimore District:
Residuals Facility
U.S. Army Corps of Engineers, Baltimore District:
Dalecarlia Reservoir
U.S. Army Corps of Engineers, Baltimore District:
Georgetown Reservoir
U.S. Army Corps of Engineers, Baltimore District:
Water Testing
U.S. Army Corps of Engineers, Baltimore District:
BG Graham visits Washington Aqueduct
U.S. Army Corps of Engineers, Baltimore District:
BG Graham visits Washington Aqueduct
U.S. Army Corps of Engineers, Baltimore District:
Col. Chamberlayne visits with Washington Aqueduct staff
U.S. Army Corps of Engineers, Baltimore District:
BG Graham visits Washington Aqueduct
U.S. Army Corps of Engineers, Baltimore District:
BG Graham visits Washington Aqueduct
U.S. Army Corps of Engineers, Baltimore District:
BG Tickner visits the Washington Aqueduct
U.S. Army Corps of Engineers, Baltimore District:
BG Tickner visits the Washington Aqueduct
U.S. Army Corps of Engineers, Baltimore District:
BG Tickner visits the Washington Aqueduct
U.S. Army Corps of Engineers, Baltimore District:
BG Tickner visits the Washington Aqueduct
U.S. Army Corps of Engineers, Baltimore District:
BG Tickner visits the Washington Aqueduct
U.S. Army Corps of Engineers, Baltimore District:
BG Tickner visits the Washington Aqueduct
U.S. Army Corps of Engineers, Baltimore District:
BG Tickner visits the Washington Aqueduct
U.S. Army Corps of Engineers, Baltimore District:
BG Tickner visits the Washington Aqueduct