Hydrology IJozsef Szilagyi, Professor of Hydrology Department of
Hydraulic and Water Resources Engineering Budapest University of
Technology and Economics
Lecture #9: Erosion, river morphology, river flow
River meanders follow a sine-generated curve: = sin(2s/S)
: deviation angle: max()s: distance along the pathS: total path
distance in a wavelength
Depth (%)095Velocity (%)10020
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
