Each spring, the Niwot Ridge snow survey ushers in a new season of fieldwork
![](https://lternet.edu/wp-content/uploads/2023/09/niwot-delarosa-85-X3-400x300.jpeg)
Snow is the defining control on Niwot’s ecology. Through the winter, the white stuff builds with each passing storm; sometime in the spring, melting begins, flushing water and nutrients through the system. The annual snow survey tracks snowfall through time.