This is one of Captain W F W Owen's finest pieces of work since he took over responsibility for the Great Lakes survey in 1814. The survey is also one of the earliest contributions made by Henry Bayfield, Owen's eventual successor in 1817. The other assistant surveyors; Messrs Lt. A T E Vidal and Mr Harris, Master, are also well known contributors to the great survey.
The survey shows the shoreline and fringe hydrography of the lake. The Remarks include reference to the earlier work of De Witt, Joseph Bouchette and Chewit, along with an interesting 'disclaimer' that 'The roads and rivers on the American side and the interior have been added from De Witt, Bouchette and Chewit for the purposes of general information and are by no means to be considered part of the survey'.
A significant paper over-lay has been added at some point in time, perhaps by Bayfield, as an after thought in response to the result of later surveys reaching up and in to Lake Simcoe.
