Hydrology and Hydraulic Engineering quizzes
How water moves through landscapes and how engineers manage rivers, floods, dams and water supply.
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Over many years a catchment's stored water barely changes. Precipitation then roughly equals what?
- Infiltration minus evaporation
- Evapotranspiration plus runoff
- Runoff plus infiltration
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Answer: Evapotranspiration plus runoff
With no long-term change in storage, the water budget P = ET + Q + ΔS reduces to P ≈ ET + Q; infiltrated water eventually leaves as runoff or evapotranspiration.
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