Tetra Tech

Longmont United States

We currently maintain a network of seven DS-5 sondes to monitoring real-time water quality (pH, conductivity, and chloride) in the Purgatoire Watershed of southern Colorado. The DS-5 sondes were deployed in 2010 and have been monitoring water quality year round at 15-minute intervals for nearly five years. The durability and reliability of the DS-5 has been quite impressive considering year round operation in such a harsh environment. Freezing conditions during the winter months put added stress on the DS-5 housing and probes while flood conditions during the summer months expose each DS-5 unit to gravels and other debris. The durability and reliability of the DS-5 sonde has definitely helped improve the quality of our monitoring program by minimizing lost data due to repairs.