Duluth Channel Lights 

Duluth Ship Channel – Water Current Indicator Lights

The Corps of Engineers, in conjunction with the city of Duluth, has installed a current indicator light on the north tower of the Duluth Aerial Lift Bridge. There are two sets of lights in a horizontal orientation, one facing the lake on the northwest side of the north tower and one facing towards the Duluth Harbor Basin on the southwest side of the north tower.

 

Light Status Water Current Conditions

  • Yellow - Less than 1 MPH – Inbound or Outbound
  • Steady Red - Greater than or equal to 1 MPH but less than 3 MPH – Inbound
  • Steady Green - Greater than or equal to 1 MPH but less than 3 MPH – Outbound
  • Flashing Red - Greater than or equal to 3 MPH – Inbound
  • Flashing Green - Greater than or equal to 3 MPH – Outbound