In December 2014 the Portland Maine King Tides Trail was created and marked by a temporary installation designed by University of Southern Maine faculty and students. The installation was supported by the Limulus Fund at the Maine Community Foundation through the Gulf of Maine Council on the Maine Environmental Climate Network.
Red marking whiskers outlined where the water will reach if sea level rises 3 feet higher than the 2014 highest annual tide. Blue solar powered beacons marked the way to sites where tidal changes can be easily observed. Specially designed circular graphics were placed on the pavement to mark the sites.