SNOTEL is an automated system of snowpack and related climate sensors operated by the Natural Resources Conservation Service (NRCS), US Department of Agriculture. The SNOTEL sites are generally located in remote high-mountain watersheds where access is often difficult or restricted.
All SNOTEL sites measure snow water content, accumulated precipitation and air temperature. Some sites also measure snow depth, soil moisture and temperature, wind speed, solar radiation, humidity, and atmospheric pressure. These data are used to forecast yearly water supplies, predict floods, and for general climate research.