Water that flows over the land surface?

Water that flows over the land surface?

• A. Biosphere
• B. Interception
• C. Percolation
• D. Overland Flow

Answer: (D)

Overland flow is water that travels across the land surface after rainfall. It happens when the rainfall rate exceeds the soil’s ability to absorb it (infiltration capacity) or when the soil is already saturated, so the excess water can’t infiltrate and instead moves downslope as surface runoff. This flow can travel across fields and pavements, eventually contributing to streams and rivers. It’s distinct from interception, which is water temporarily stored on vegetation and later evaporated or dripping to the ground, and from percolation, which is water moving downward into deeper soil layers or rock.

Overland flow is water that travels across the land surface after rainfall. It happens when the rainfall rate exceeds the soil’s ability to absorb it (infiltration capacity) or when the soil is already saturated, so the excess water can’t infiltrate and instead moves downslope as surface runoff. This flow can travel across fields and pavements, eventually contributing to streams and rivers. It’s distinct from interception, which is water temporarily stored on vegetation and later evaporated or dripping to the ground, and from percolation, which is water moving downward into deeper soil layers or rock.