Twenty kilometres from the salt waters of James Bay, Tidewater consists of four islands in the Moose River estuary. Water taxis take campers to Charles Island where sub-Arctic flora flourish and seals and belugas sometimes play. This is Cree country and site of the first Hudson's Bay Company trading post at Moose Factory.
As of 2013, there is no more camping available at this park, according to Parks Ontario. Tidewater Park is a provincial park run by the town of Moosonee. It is free to get into (you can take a water taxi from Moosonee) and there are washroom facilities and picnic shelters available.