Rivinletto Light is a sector light tower located on Kaasamatala, a small island at the mouth of Kiiminkijoki river in Haukipudas, Finland. The tower is concrete, with its top half painted black and bottom half painted white. The lantern room is of steel construction painted white. It's located on the south side of the main channel of Kiiminkijoki river.
The light is used to guide vessels in to the Kiiminkijoki river boating channel and in to the Martinniemi harbour. It displays a white flash every three seconds, visible in a sector 016°—248° as seen from a vessel approaching the light. The focal plane of the light is 7,6 meters (24 feet 11 inches), and it can be seen from a distance of 3,5 nautical miles (6,5 kilometers or 4,03 miles).
