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 southernmost portion of Kalamalka Lake are encompassed by it. Lake Country was incorporated in 1995. The previously unincorporated communities of Winfield, Okanagan Centre, Oyama, and Carr's Landing were united to form the new municipality, and they remain as separate wards within it. In the municipal government, one councillor is drawn from each of these wards, while the mayor and two additional councillors are elected by the people at large. Lake Country is the only municipality in the province of British Columbia to have the ward system. The four wards of Lake Country are: Population: 11,708 (2011 Census Profile) Population Change