St. Mary Lake & Wild Goose Island, Glacier National Park

We had a quick stop at Saint Mary Lake with its tiny Wild Goose Island (seen in my photo), on our drive north from Yellowstone National Park to Calgary. We had planned to drive the Going-to-the-Sun Road, but road works had already closed the road just the day before we arrived. Instead, we drove in from the west as far as we could, turned around, drove all the way south and east to eventually enter the park through the east gate.

"Saint Mary Lake is the second largest lake in Glacier National Park. Located on the east side of the park, the Going-to-the-Sun Road parallels the lake along its north shore. At an altitude of 4,484 feet (1,367 m), Saint Mary Lake's waters are colder and lie almost 1,500 feet (460 m) higher in altitude than Lake McDonald, the largest lake in the park, which is located on the west side of the Continental Divide. Here, the great plains end and the Rocky Mountains begin in an abrupt 5,000 feet (1,500 m) altitude change, with Little Chief Mountain posing a formidable southern flank above the west end of the lake. St. Mary lake has a surface area of 3,923 acres (15.88 km2)." From Wikipedia.

The lake is 9.9 miles (15.9 km) long and 300 feet (91 m) deep. The waters of the lake rarely rise above 50 °F (10 °C) and are home to various species of trout. During the winter, the lake often is frozen completely over with ice up to 4 feet (1.2 m) thick." From Wikipedia.

en.wikipedia.org/wiki/Saint_Mary_Lake