Table 2: Dam embankment integrity rating based on layer resistivity and lithological composition of the core (modified after Olorunfemi, et al.) [7].
|
Lithology of Core |
Layer Resistivity Range (Ωm) |
Embankment Integrity Rating |
|
Plastic Clay |
1-20 |
Very Good |
|
Clay |
20-100 |
Good |
|
Sandy Clay |
100-250 |
Fairly Good |
|
Clayey Sand/Sand |
˃ 250 |
Fair/Poor |