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- The earth's surface as it is prior to any work. See original ground surface.
Bureau of Reclamation - Cite This Source - This Definition
- ATV, Conjunctive use, Ground water table, Harrow, Leachate, Mulch, Observation well, Offstream uses, Original ground (surface), Seep, spring, Sprinkler irrigation, Terrain, topography, Well, Withdrawal, yield