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
The River Flows other unreleased material. "(Note these musicians are those present for the 4th disc - see individual entries for the first three.)" The River Flows The River Flows: Anthology Vol. 1 is a progressive rock 4-CD album by Iona, released in 2002. It is a box set collection of their first three studio albums with some re-recording plus a fourth disc which is a collection of additional material from throughout the years. The band's first album, "Iona", has the re-recorded tracks and each of the first three is subtly re-mastered. CD 4 contains new and previously unreleased material including Iona's soundtrack