Surface Runoff

Precipitation, snow melt, or irrigation in excess of what can infiltrate the soil surface and be stored. Surface runoff is a major transporter of non-point source pollutants.

The runoff that travels overland to the stream channel. Rain that falls on the stream channel is often lumped with this quantity.

In hydrologic terms, the runoff that travels overland to the stream channel. Rain that falls on the stream channel is often lumped with this quantity.