formed by its East and South Forks at 614730N, 1473015W, flows SW to the Knik Arm Cook Inlet, 9.5 mi. SW of Palmer, Cook Inlet Low.
Name derived from the Russian term for the "copper river people" spelled Matanooski, Mednofski, Miduuski, Mednoviska, etc. It appears to be the same name used by the Russians for the Ahtena Indians on the Copper River, and may have originally been used in the 19th century to imply a route from Cook Inlet to the Copper River. The present spelling was used by U.S. Coast and Geodetic Survey (USC&GS) in 1897.
Anderson Lake, Baird Lake, Lake Barbara, Black Lake, Bradley Lake, Canoe Lake, Clear Lake, Cornelius Lake, Cottonwood Lake, Dandy Lake, Dinkel Lake, Dry Lake, Duck Lake, Dusk Lake, Echo Lake, Edmonds Lake, Eklutna Lake, Emerald Lake, Ezi Slough, Finger Lake, Gooding Lake, Hart Lake, High Ridge Lake, Irene Lake, Johnson Lake, Kennedy Lake, Kepler Lake, Kings Lake, Klaire Lake, Loberg Lake, Long Lake, Lucile Lake, Matanuska Lake, McLeod Lake, Meier Lake, Memory Lake, Minor Lake, Mirror Lake, Mud Lake, Mud Lake, Neklason Lake, Nik-udatl-ech-a Bena, Paradise Lake, Reed Lake, Reedy Lake, Reflections Lake, Triangle Lake, Walby Lake, Wasilla Lake, Weinie Lake, Wolf Lake,
Bear Point Trail, Blueberry Knoll Trail, Eklutna ATV Access Trail, Eklutna Lake Spillway Trail, Eklutna Spillway Trail, Meadow Creek Trail, Mile High Ridge Trail, Mile High Saddle Trail, Mount Eklutna Trail, Peters Valley Trail, Ptarmigan Valley Trail, Thunderbird Falls Trail, Twin Peaks Trail, Yuditna Cabin Access Trail, Yuditna Cabin Trail,