The M-20 Bridge, also known as the Maple St. Bridge, is located approximately 4,000 feet downstream of the dam remnant site. Water-quality, suspended-sediment, and bed-load samples are collected from this bridge. The water-quality samples were used to assess the changes to river-water quality due to the dam remnant and rock cofferdam. The suspended-sediment and bed-load samples are being used to detect changes in the Muskegon River sediment load due to the removal of the dams and to quality assure the suspended-sediment samples collected at the streamflow gage.