The Kouchibouguac River winds through the heart of Kouchibouguac National Park in eastern New Brunswick, emptying into the Northumberland Strait after a journey of 72 kilometres (44.7 miles). Its Mi'kmaq name translates to "river of the long tides," a fitting description for a system defined by its tidal estuary character and the mixing of freshwater and saltwater environments. This unique blend creates a productive fishery where sea-run brook trout share water with striped bass, American eel, and rainbow smelt, making it a genuinely diverse angling destination on Canada's eastern coast. The river's setting within a national park means it is managed with conservation as a priority, offering anglers a pristine, well-protected environment with clear regulations and active monitoring programs.