Download the Surface Water-Level Sensor Selection Guide Now! Measuring water level in open channels, rivers, reservoirs, and lakes is one of the foundations of hydrological monitoring and has been a focus of OTT Hydromet since its first current meters were designed in 1875. For water level and depth measurement, no application is the same. For this reason, OTT Hydromet provides a variety of sensors with different measurement principles, tailored to fit the specific requirements of different hydrologic measurement sites, including: High concentrations of suspended sediment Flashy sites Presence of ice Lightning prone Unstable stream banks Shallow water or narrow channels Want to learn more about the differences in technology and which sensor fits your application? Download the Surface Water-Level Sensor Selection Guide Now!