Hydrologic balance

Hydrologic balance means the relationship between the quality and quantity of water inflow to, water outflow from, and water storage in a hydrologic unit such as a drainage basin, aquifer, soil zone, lake, or reservoir. It encompasses the dynamic relationships among precipitation, runoff, evaporation, and changes in ground and surface water storage.

Source

30 CFR § 701.5

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Scoping language

As used in this chapter, the following terms have the specified meanings, except where otherwise indicated:

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