Rainbow Plaza is a heavily used two-lane boat ramp on the lower Umpqua River in Reedsport, featuring improved access with 36 trailer parking spots, 11 single-car spaces, multiple boarding docks, and ADA-accessible restrooms.

Recently renovated with a widened ramp to reduce congestion, the facility also includes a fish cleaning station and boat wash-down station, making it ideal for both boaters and anglers launching into the estuary.