Lake McDonald is the largest lake in Glacier National Park. It is located ain Flathead County in the U.S. state of Montana. Lake McDonald is approximately 10 miles long, and over a mile wide and 472 feet deep, filling a valley formed by a combination of erosion and glacial activity. Lake McDonald lies at an elevation of 3,153 feet and is on the west side of the Continental Divide. The Going-to-the-Sun Road parallels the lake along its southern shoreline. The surface area of the lake is 6,823 acres.
The lake is home to numerous native species of trout, and other game fish. Catchable species include, but are not limited to - westslope cutthroat trout, rainbow trout, bull trout (char), lake trout (char), Lake Superior whitefish, mountain whitefish, kokanee salmon (landlocked sockeye), and suckers. However, the lake is nutrient-poor and is not considered a prime fishing destination. Grizzly bears, black bear, moose, and mule deer are found in many places near the lake but are most common on the north shore. The lake is surrounded by a dense coniferous forest dominated by various species of spruce, fir, and larch. At the westernmost section of the lake in Apgar there is a National Park Service visitor center, limited lodging and dining facilities as well as outboard powerboats available for rental. Lake McDonald Lodge is the largest lodging facility on the lake and is approximately 5 miles east along the Going-to-the-Sun Road.
Glacier National Park is a national park located in the U.S. state of Montana, on the Canada–United States border with the Canadian provinces of Alberta and British Columbia. The park encompasses over 1 million acres and includes parts of two mountain ranges (sub-ranges of the Rocky Mountains), over 130 named lakes, more than 1,000 different species of plants, and hundreds of species of animals. This vast pristine ecosystem is the centerpiece of what has been referred to as the "Crown of the Continent Ecosystem", a region of protected land enco