ABSTRACT
The auger-hole method is a field technique for measuring the in situ saturated hydraulic conductivity, Ks [LT
1], of porous materials within the saturated zone (i.e., below the water table); and it is perhaps the most reliable and trusted means of obtaining Ks values for the design of subsurface tile drainage systems. An alternative in situ method for Ks measurement in the saturated zone is given in Chapter 79 (piezometer), while several laboratory and
estimation techniques for Ks determination are given in Chapter 75 and Chapter 84, respectively. A discussion of the principles and parameters associated with the determination of Ks appears in Chapter 69.
