Includes bibliography.

Introduction / H.A.J. Van Lanen -- Framework for groundwater monitor ing in (semi-)arid regions / H.A.J. Van Lanen and J.J. Carrillo-Rivera -- Background monitoring R.B. Bradford and J. Vrba -- Specific monitori ng / J.W. Lloyd -- Monitoring tools and type of recording / C.J. Otto - - Geostatistical procedures for analysing spatial variability and optim izing collection of monitoring data / A. Stein -- Geohydrological infor mation management systems / T.T. Kuipers -- Optimization of hydrograph network stations in a hard rock setting in Maharashtra State (India) / N. Kittu and A.V.S. Anand --Monitoring an over-exploited aquifer in Ind ia / K.R. Rushton -- Monitoring of exploited aquifers resulting in subs idence. Example : Mexico City / J.J. Carrillo-Rivera -- Vadose zone mon itoring strategy to protect aquifers from contamination / D.B. Stephens -- Monitoring salt water intrusion : some imperatives and an example : Kavaratti Island (India) / C.P. Gupta and V.V.S. Gurunadha Rao -- Moni toring of groundwater in fluoride-affected areas in Andhra Pradesh (Ind ia) / J.V. Van der Sommen, M. Gishler, and K.V.J.R. Krupanidhi -- Surfa ce moisture monitoring by passive microwave techniques in (semi-)arid e nvironments / M. Owe and A.A. Van de Griend.