Mackenzie River basins, mostly in Alberta. The cold northern permafrost regions beyond the Arctic Circle are very sparsely populated, mainly by indigenous peoples. Most of the Mackenzie watershed is unbroken wilderness and human activities have little influence on the overall water quality, although there are some localized impacts. Some parts of the Mackenzie basin are rich in natural resources – oil and gas in the Northwest Territories and in central Alberta, lumber in the Peace River headwaters, uranium in Saskatchewan, gold and zinc in the Great Slave Lake area and tungsten in the Yukon. As of 2003 there were two operational gold
Mersey River (Tasmania) Rowallan. The Rowallan Power Station, part of the Rowallan Dam is a hydro-electric station is also located on the Mersey. Fish Creek is also a tributary to Lake Rowallan. The Mersey then flows to Lake Parangana. Lake Parangana also takes inflows from the Fisher River, this has a tributary of the little Fisher River and Fisher River flows through Lake MacKenzie and the Fisher Power Station which also has a tributary from Explorer Creek which is fed from Lake Explorer. Water from Lake Parangana is transferred west via tunnels to Lemonthyme Power Station. The water runs into Lake Cethana. The