Guelph Permeameter
The Bureau has used a Guelph permeameter (model 2800K, Soilmoisture Equipment Corp, Santa Barbara, CA) and borehole permeameter to measure saturated hydraulic conductivity (Ks) in unsaturated sediments. The Guelph permeameter is generally used to measure Ks in the shallow subsurface. Constant head borehole permeameter tests were used to estimate Ks at much greater depths in the unsaturated zone. We have also evaluated techniques for analyzing the borehole permeameter tests.
References:
Xiang, J., Scanlon, B. R., Mullican, W. F. I., Chen, L., and Goldsmith, R. S., 1997, A multistep constant-head borehole test to determine field saturated hydraulic conductivity of layered soils: Advances in Water Resources, v. 20, pp. 45-57. [PDF]
