St. Paul District, U.S. Army Corps of Engineers:
Corps performs winter work at Lock and Dam 9
St. Paul District, U.S. Army Corps of Engineers:
Corps performs winter work at Lock and Dam 9
St. Paul District, U.S. Army Corps of Engineers:
Corps performs winter work at Lock and Dam 9
St. Paul District, U.S. Army Corps of Engineers:
Corps performs winter work at Lock and Dam 9
St. Paul District, U.S. Army Corps of Engineers:
Corps performs winter work at Lock and Dam 9
St. Paul District, U.S. Army Corps of Engineers:
Corps performs winter work at Lock and Dam 9
St. Paul District, U.S. Army Corps of Engineers:
Corps performs winter work at Lock and Dam 9
St. Paul District, U.S. Army Corps of Engineers:
Corps performs winter work at Lock and Dam 9
St. Paul District, U.S. Army Corps of Engineers:
Corps performs winter work at Lock and Dam 9
St. Paul District, U.S. Army Corps of Engineers:
Corps performs winter work at Lock and Dam 9
St. Paul District, U.S. Army Corps of Engineers:
Corps performs winter work at Lock and Dam 9
St. Paul District, U.S. Army Corps of Engineers:
Corps performs winter work at Lock and Dam 9
St. Paul District, U.S. Army Corps of Engineers:
Corps performs winter work at Lock and Dam 9
St. Paul District, U.S. Army Corps of Engineers:
Corps performs winter work at Lock and Dam 9