That part of the flow in a stream comes from sub-soil or valley, may be beneath the top surface of channel bed is called__________________?
Correct answer: D. Base flow
- A. Sub-surface flow
- B. All are correct
- C. Ground flow
- D. Base flow
Explanation
Base flow is the relatively sustained contribution to streamflow supplied by groundwater and other delayed subsurface drainage. Subsurface flow is a broader descriptive term, but the hydrological term for this stream contribution is base flow.
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Practise Irrigation and Water Management
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