To monitor levee performance a number of site variables had to be monitored. These included the river water level, pore pressures and water conductivity at various depths in and around the levee to detect water flow through the levee, barometric pressure, and air and soil humidity.

Stump Bohr AG, of Zurich Switzerland, received the contract to design and install the monitoring systems, a total of 9 monitoring stations spread out over the 70km stretch of river. Canary Systems supplied all the hardware and software for the monitoring stations, in addition to the conductivity probes. The hardware included the MultiMux for connecting the various types of instruments, the MultiSensor Interface, CR10X Control Module and AVW1 Vibrating Wire Interface. The MultiSensor Interface made it possible to connect all the disparate sensors types, including vibrating wire, 4-20mA, conductivity and thermistors, to the same multiplexers. This simplified the system installation and hardware requirements.