Lessons from the Case History of a Massive Landslide Dam

Table 1

Test parameters of the field electrical resistivity surveys at the Hattian Bala landslide dam.

Survey location	Length of survey line (m)	No. of sequences	No. of data points	Maximum investigation depth (m)	Initial electrode spacing (m)	Electrode array
Phase 1 (November/December 2006)
Longitudinal	894	59	3675	155	6	Wenner alpha
Transverse at 22 m	114	6	57	20
Transverse at 124 m	150	8	100	26
Transverse at 237 m	162	9	117	28
Transverse at 574 m	90	5	35	16
Phase 2 (February/March 2007)
Longitudinal	894	59	3675	155	6	Wenner alpha
Transverse at 1114 m	234	26	1001	41	3