Petroleum hydrocarbon runoff in rivers flowing from oil-and-gas-producing regions in Northwestern Siberia

A method is proposed for evaluating the overland and river runoff of petroleum hydrocarbons originating from disperse pollution sources. The method is used to calculate their export from oil-and-gas-producing areas in Northwestern Siberia through the Pur River, a major artery in the Arctic region. The potential petroleum hydrocarbon input into the river is evaluated for different extent of petroleum pollution in the drainage basins of its tributaries.