Snow pillows measure how much water is in the snowpack by weighing the snow. Automatic measuring devices convert the weight of the snow into an electrical reading of the snow’s water equivalent, or the actual amount of water in a given volume of snow.

Number deployed on SOS Project: 4

Make/model used on SOS Project: Alpine Hydromet

(L-R) SOS Project researchers Eli Schwatt, Ethan Gutmann, and Jessica Lundquist install a snow pillow at the Kettle Ponds study site.