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. Damage assessment began Thursday and is expected to continue through Friday, the Portland Press Herald reported. There was a large landslide along the Presumpscot River in Westbrook Wednesday, where the mayor has declared a state of emergency.