It contains numerous portages, campsites and is one of three lakes on the eastern edge of the White Bear Forest.

The lake is named in honour of Sir Walter Cassels, President of the Exchequer Court of Canada.

[3] The Gillies' Bros. logging company then cut the trees from the land and the flooded forest area leaving behind the snags and stumps seen in the water.

The White Bear Forest on the south side of the lake, opposite the former mill, is now a conservation reserve.

The reserve has a system of hiking trails, which provide visitors with a great opportunity to experience the old growth pine forest.