2.4 Derivation of HE flux in relation to the polynomial of water level and its change rate
Assuming that (1) the flood wave at the site was approximately sinusoidal; (2) the variation of wave amplitude was much smaller than the thickness of the aquifer; and (3) the aquifer was relatively homogeneous and had good permeability, the water head within the riparian aquifer in response to the flood wave can be approximately obtained as follows (Singh, 2004):