[en] For the proper evaluation of the safety aspects of disposal of radioactive liquid wastes through cribs, it is necessary to know seepage of liquid and total discharge beneath a crib. With this objective in view, seepage of liquid and total discharge beneath a model waste disposal crib has been studied taking into consideration the various parameters, namely, permeability of the subsurface strata; boundaries of the waste disposal site; depth and slope of the rock; water table - its depth, slope and fluctuations; level of liquid wastes in the crib and dimensions of the crib. Three approaches, namely, analytical, numerical and analog model simulations have been followed in the study. Exact analytical solution developed by using Schwarz-Christoffel transformation to compute discharge revealed the significant effect of crib width on discharge. Curves thus obtained are useful in predicting the discharge from a crib. Potential lines and stream lines (flownets) constructed theoretically by solving boundary value problem numerically using the computer code POTAL help in establishing migration route of the pollutants. Numerical results of the flownets compare reasonably well with the experimentally observed plots. Conductive liquid model based on electrical analogy and Hele-Shaw model based on viscous flow analogy were set up in the laboratory experimentally to determine the flow nets and discharge, after simulating the field conditions in the model. The study is, however, more useful in a homogeneous viz., sandy aquifer, as there is a limitation to simulate varying permeability in a heterogeneous strata. Hele-Shaw model study reveals that for a given condition of the initial water table, the slope of the impervious bed has negligible effect on discharge and free surface slopes. (M.G.B.)