Valley Region covers much of the southeastern portion of the
province. Most rivers flow east to the Ottawa River, although a few
that flow to Lake Ontario have been added for convenience. The
region lacks big, well known waterfalls, but contains a large number of
small, picturesque ones, many of which are known only by the locals.
The region includes the following counties: Frontenac, Hastings, Lanark,
Leeds and Grenville, Lennox and Addington, Ottawa, Prescott and Russell,
Prince Edward and Renfrew. Nipissing District is included in this
region in the text version of Waterfalls
of Ontario, but on the web version is grouped in the Northeast Region.