In the drainage basin water balance P = ET + Q + ΔS, what does ΔS represent?

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Multiple Choice

In the drainage basin water balance P = ET + Q + ΔS, what does ΔS represent?

Explanation:
In the drainage basin water balance, ΔS is the change in water storage within the basin—the amount of water stored in soils, groundwater, and surface water that increases or decreases over the time period considered. If rainfall adds water faster than it’s lost to evapotranspiration and river discharge, storage increases (positive ΔS). If losses exceed inputs, storage decreases (negative ΔS). The remaining terms represent inputs (precipitation) and outputs (evapotranspiration and discharge) from the basin.

In the drainage basin water balance, ΔS is the change in water storage within the basin—the amount of water stored in soils, groundwater, and surface water that increases or decreases over the time period considered. If rainfall adds water faster than it’s lost to evapotranspiration and river discharge, storage increases (positive ΔS). If losses exceed inputs, storage decreases (negative ΔS). The remaining terms represent inputs (precipitation) and outputs (evapotranspiration and discharge) from the basin.

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