Paudash Lake is a shield lake just south of Bancroft. Whereas both Chandos and Jack Lakes have significant calcium levels, Paudash exhibits much lower calcium levels, typical of the more northern shield lakes and the Muskoka Lakes. It is part of the Crowe River watershed, and is where the Crowe River originates. There is a small dam at the exit to the Crowe River, the purpose of which is to maintain the water level. There have been issues with cobalt and uranium contamination due to mining and tailing ponds associated with the Faraday and Dyno mines. (Paudash Lake)
In 2005 the Paudash Lake Conservation Association commissioned a Lake Management Plan, which provides a comprehensive look at the lake.