City and state officials are determining if crews can safely begin repairing damage to the riverbank after a two-acre landslide collapsed into the Presumpscot River on Wednesday, prompting the City of Westbrook to go into a state of emergency. The landslide blocked off a section of the Presumpscot River downstream from the Sappi Mill for several hours and forced the water level behind the blockage to rise up to 13 feet.