Hydrogeology Part – 2 Darcy’s law and hydraulic conductivity Water contained within the interconnected voids of soils and rocks is capable of moving, and the ability of a rock to store and transmit water constitutes its hydraulic properties. The laws that govern the behaviour of groundwater flow in saturated material is that formulated empirically by the French municipal engineer for Dijon, Henry Darcy, in 1856. Darcy studied the flow of water through porous material contained in a column and found that the T otal flow - Q, is proportional - difference in water level, h1 − h2, the cross-sectional area of flow, A, and inversely proportional to the column length, L. proportionality constant - K where dh/dl represents the hydraulic gradient, with the negative sign indicating flow in the direction of decreasing hydraulic head. Limitations: D...