Surface runoff

Soil erosion by water on intensively-tilled farmland.

Surface runoff (also known as overland flow) is the flow of water that occurs when excess stormwater, meltwater, or other sources flows 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 that cannot absorb all of it. Surface runoff is a major component of the water cycle. It is the primary agent in soil erosion by water.

单词	Surface runoff
释义	Surface runoff 原声例句当月 VOA Special English " The roots trap everything, including the surface runoff, and stabilize the weaknesses of the banks." “竹子的根部可以截留一切，包括地表径流，并稳固河岸的薄弱位置。” 英语百科 Surface runoff Surface runoff (also known as overland flow) is the flow of water that occurs when excess stormwater, meltwater, or other sources flows 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 that cannot absorb all of it. Surface runoff is a major component of the water cycle. It is the primary agent in soil erosion by water.
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