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 Country Limited Lake Country Limited The Lake Country Limited was a short-lived Amtrak route which connected Chicago, Illinois, with Janesville, Wisconsin. The route was part of Amtrak's Network Growth Strategy, which envisioned an expanded role for mail and express business. The "Lake Country Limited" would have exchanged goods with a new Chicago—New York train named the "Skyline Connection", which in the end never began operation. Trains originated at Chicago's Union Station and ran north over the tracks of Metra's Milwaukee District/North Line. Northwest of Fox Lake, Illinois, it ran over tracks owned by the Wisconsin and Southern Railroad to a temporary platform