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Sketch of the Channels of the Ottawa at the Chaudiere Falls shewing the Stone wall built by Col. By across the Old Timber Channel, and the Ravine or Gully in which Captn. Le Breton states that he inte ... [Voir le titre complet] nded to form a Mill site by excavating a Channel through the Bank at, a, down the Ravine until he obtained a sufficient fall, and diverting as much of the water from the Old Timber Channel as his Mill might require, by carrying it into a lower Channel or Bay in the direction, abc, or abd, as marked in yellow dotted lines. [cartographic material] Sketch of the Channels of the Ottawa at the Chaudiere Falls..