Steady seepage from two-dimensional domains is investigated using a dimensi
onless formulation for variably saturated media that depends on three dimen
sionless parameters, M, n, and alpha. The parameter M is the product of the
anisotropy ratio and the squared ratio of the vertical length scale to the
horizontal length scale. The parameter n increases with the uniformity of
the pore sizes, and alpha represents the ratio of the domain height to the
height of the capillary fringe. Our modeling results show that the seepage
face height in rectangular domains is always larger than the seepage face h
eight computed from saturated flow models. The results also show that the s
eepage face height increases with increasing M, increasing n, and/or decrea
sing alpha. The outflows computed from the present model are always larger
than the outflows computed by the Dupuit assumption. Nomographs for rectang
ular and trapezoidal domains simulating trenches and dams are presented.