Lake Onega water per year, of which 46% are industrial and household water, 25% is stormwater runoff and 16% is melioration-related drainage. This drainage contains of phosphorus and of nitrogen; respectively of these elements are removed through the River Svir whereas the rest accumulates in the lake. Ships and motor boats (about 8,000 units) bring oil pollution at the level of about per navigation year, as well as phenols (), lead () and oxides of sulfur, nitrogen, and carbon. The lake basin is a major source of granite, marble and black schist in Russia which have been exploited in the area since
Lake Karrinyup Country Club Lake Karrinyup Country Club Lake Karrinyup Country Club is a private golf club located in Karrinyup, Western Australia. The golf club consists of an 18-hole championship golf course, and a 9-hole "short course". The championship layout at Lake Karrinyup was founded in 1928, designed by Alex Russell who was the Australian partner of the famed golf course architect, Alister MacKenzie. The championship course is a par-72 layout that winds its way through undulating ground, native gum-trees, and indigenous vegetation. Designed by Alex Russell in 1928 and opened for play in 1930, the course has seen a number of changes in