ABSTRACT
This chapter discusses on hydraulic conductivity, ground water flow in fractured rock masses occurs predominately along the discontinuities because of the very low primary hydraulic conductivity of most intact rock. In examining rock or soil slopes, it may be a mistake to assume that ground water is not present if no seepage appears on the slope face. A recharge area is one in which the net saturated flow of ground water is directed away from the water table, while in a discharge area the net saturated flow is directed towards the water table. In tropical and desert climates the ground water table is usually more predictable and consistent than temperate climates where the precipitation levels are more variable. In general, ground water flows from recharge areas to discharge areas. The discussion on ground water flow in rock masses shows that details of the geology can have a significant effect on water pressures and seepage quantities in rock slopes.
