Whitefish Lake - Whitefish, MT - Natural Lakes on Waymarking.com

Had we not experienced the latest ice age 12,000 years ago, we would not have a Whitefish Lake. It was formed with the deposition of glacial till in the valley which impounded the waters of the lake when the ice melted 10,000 years ago.

Seven miles in length, Whitefish has a shoreline of 15.85 miles and an area of 3,341 acres. Its average depth is 109 feet, with a maximum depth of 232 feet. It has a mean volume of 480,798,030 cubic metres and is drained by the Whitefish River, which flows from its southern end. It is fed by several smaller creeks around its perimeter.

Below is the text from a historical marker on the beach at the southern end of the lake, at which coordinates were taken. With settlement around the lake it has become a much used recreational lake for swimmers, boaters and fishermen.

Welcome to Whitefish Lake

Whitefish Lake Geologic History
If you were standing here 12,000 years ago, you would have been buried below an advancing glacier nearly 3,000 feet deep. Originating in Canada, this "Stillwater Glacier" flowed south-southeast into the Flathead Valley.

As the glacier moved forward, it deposited huge piles of sand, gravel, cobbles and boulders known as glacial till. As temperatures increased in the late ice age, the ice melted but continued moving forward at the same rate, which created the dam—or glacial moraine that impounds Whitefish Lake today.

When the area became ice free around 10,000 years ago, it revealed Whitefish Lake and the surrounding landscape. Since its formation, Whitefish Lake has been a cold, clear lake with very good water quality. European settlement around the lake began approximately 125 years ago, representing about 1% of the lake's geologic history. Ongoing recreation and development continues to place pressure on the lake and may compromise water quality.
From the marker