The final stretch of the Low Guadalquivir Canal includes an irrigation control pond, closed by four homogeneous embankments, three of which are placed on marshland. Figure 2 shows the final design that incorporates the following elements: a geotextile with a stiffness of 8333 kPa at the base, band shaped drains and upper sand blankets, a chimney drain and widened berms. During 1157 days measurements have been taken at topographical stakes, settlement plates, piezometers and inclinometers placed within and below the embankments. Several rheological models have been employed to interpret the measured displacements and pore pressures.