Table 3: Measuring instruments Measuring Instrument No Measured Parameter Stand pipe piezometers 58 Ground water pressure in the abutments Hydraulic Piezometers 33 Pore water pressure in the core Pneumatic Piezometers 15 Dam foundation water pressure Hydraulic Settlement Cells 16 Settlement in the core Double Fluid Settlement Gauge 01 Core settlement profile Earth Pressure Cells 15 Earth pressure in the core Surface Monuments 36 Dam body deformations Seepage Measuring Weirs 01 Seepage through the Dam body and abutments