Bear Lake and Great Salt Lake

iss073e0865636 (Oct. 7, 2025) --- Bear Lake (left) is a freshwater lake spanning Idaho and Utah, and is smaller and much deeper than Utah's Great Salt Lake—averaging 208 feet compared to just 14 feet. The distinct color differences in the Great Salt Lake are caused by a railroad causeway: the red portion has much higher salinity than the blue, less saline section.