About the Watershed

The Peace River Watershed

The Peace River and Slave River Water Basin is the largest water basin area in Alberta. The Peace River begins in the Rocky Mountains of British Columbia, and flows to Alberta. The river flows northeast across the province, through the town of Peace River and empties into the Slave River. The Slave River is a tributary to the Mackenzie River, the longest river in Canada.

The Peace/Slave River Basin includes inflows from the Wapiti, Smoky, Little Smoky and Wabasca rivers, among many others. The basin is the largest in Alberta, spanning  approximately 1/3 of the province.


The term watershed refers to the geographic boundaries of a particular water body, its ecosystem and the land that drains to it. A watershed includes groundwater aquifers that discharge to and receive discharge from streams, wetlands, ponds, and lakes.

Everyone lives in a watershed. You influence what happens in your watershed, good or bad, by how you treat the natural resources, the soil, water, air, plants, and animals. What happens in your small watershed also affects the larger watershed downstream.


The Mighty Peace Watershed Alliance is a group of active stakeholders and communities that use consensus, adaptive management, and innovation to understand and promote living within the watershed. The Board will report on the state of the watershed, lead watershed planning activities, promote best management practices and develop educational programs.