Matanuska River Professional Review and Guide
"Flowing out of 27-mile-long Matanuska Glacier, the cold, swift and glacial gray Matanuska River is a popular choice for strong intermediate boaters, offering a genuine knock-your-socks-off Alaska experience with its start literally at the terminus of a glacier. The Matanuska flows through scenically spectacular landscape.
From the terminus of Matanuska Glacier, the river cuts between the glacier-clad peaks of the Chugach Range and the rugged Talkeetnas, through colorful canyon walls in the river's narrows, then flattens, spreads, and slows through the populated Mat-Su Valley, entering Knick Arm about 25 miles northeast of Anchorage. The river is graced by trees, including spruce and aspen in the upper reaches and rough-barked cottonwoods in lower areas. On autumn runs, the foliage is brilliant."