Physical parameters of water are important to understanding and managing a body of water, such as a water storage facility, waste water storage, stormwater facility, mine waste tailings or lakes, rivers and environmentally important waters. Often, these parameters are best measured in situ and information on spatial and depth variability can provide an understanding of the dynamics present in the water body.  Parameters such as water temperature, potential hydrogen (pH), dissolved oxygen (DO), turbidity, and conductivity are commonly used.  Ion selective electrodes, pressure sensors, salinity are among other measures that can be taken.  HELIX is capable of deploying physical probes for in situ water profiling up to a depth of 200m, yielding spatially accurate and depth-specific data for a complete understanding of a water body.