Mackenzie River from the Peace-Athabasca system are significantly slowed by the delta area at the western end of Lake Athabasca causing the lake to rise, and the excess water can only flow out after the rivers have receded. The same phenomenon occurs at Great Slave Lake, which naturally regulates the flow from the Slave River into the Mackenzie. There are river gages at several upstream points along the Mackenzie River. The average flow rate at the outlet of Great Slave Lake is . At Fort Simpson, below the Liard River, it is . At Norman Wells it is , and at the
Toad River name for the river is Tsal-eh-chesi. The Toad River flows generally north and northeast, passing through Muncho Lake Provincial Park, to join the Liard River. The Liard River is a tributary of the Mackenzie River, which empties into the Arctic Ocean. The community of Toad River, British Columbia is located in the lower reaches of the river where it is crossed by the Alaska Highway, near the Liard. Part of the river flows through the Muskwa-Kechika Management Area. Toad River The Toad River is a river in the Canadian province of British Columbia. The Toad River was named for the