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Created page with "==Introduction== Surface runoff is the flow of water that occurs when excess stormwater, meltwater, or other sources flow over the Earth's surface. This might occur because soil is saturated to full capacity, because rain arrives more quickly than soil can absorb it, or because impervious areas (roofs and pavement) send their runoff to surrounding soil areas. Image:Detail-30582.jpg|thumb|center|A picture of a field during a heavy rain, with water visib..."
