9Erosion, River Morphology, River Flow
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Transcript of 9Erosion, River Morphology, River Flow
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Hydrology IJozsef Szilagyi, Professor of Hydrology Department of Hydraulic and Water Resources Engineering Budapest University of Technology and Economics
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Lecture #9: Erosion, river morphology, river flow
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River meanders follow a sine-generated curve: = sin(2s/S)
: deviation angle: max()s: distance along the pathS: total path distance in a wavelength
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Depth (%)095Velocity (%)10020
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With 2 measurements per vertical the accuracy of flowrate calculations is within 3%, with 1, it becomes 4.3%.
Gauging stations: site must be chosen carefully, the resulting rating curve (h-Q) must be stable in time and be sensitive enough
Typical rating curve:
Q = c(h - a)n n > 1Stage (h)Flowrate (Q)Q = 0a
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Lab #7: Flowratecalculation