Katherine Rutherford of El Dorado Hills photographs near the remains of a structure in the old gold rush town of Mormon Island in Folsom, California on Monday, December 29, 2013. Due to the low water levels in Folsom Lake, the old Gold Rush town is beginning to appear. It hasn't been seen since 1955 when the area was flooded for Folsom Dam. Some foundations and relics can be seen on the ground, but most of the town is still underwater. the island town, which is usually under Folsom Lake, grew out of a larger Mormon settlement on the American River during the Gold Rush. It used to be a town of about 2,500 people. "Mormon Island thrived during mining years with as many as 2,500 people, complete with four hotels, a school and seven saloons, according to some historical accounts.