Idaho Snow Survey and Water Supply Forecasting Program
The Idaho NRCS Snow Survey Program provides mountain snowpack and precipitation information via SNOpack TELemetry (SNOTEL) network in order to issue streamflow forecasts for Idaho. Common applications of snow survey products include water supply management, flood control, climate modeling, recreation, and conservation planning.
**Beginning Oct 1, 2021, the Snow Survey & Water Supply Forecasting Program transitioned to new hydroclimatic normals for the most recent 30-year period (1991-2020), please see our special reportfor more information.**
Idaho Snowpack and Water Supply Outlook Report:
If you'd like to be added to the monthly distribution list, click here.
Click here(or on image to left)to view the most recent report issued at the beginning of each month. (January 1 - June 1).
Soil moisture and temperature data, wind data, and general climate information for Idaho
Interim Issue Resolution: Air Temperature Data Bias
The extended range air temperature sensors used at SNOTEL sites in the continental U.S. calculate temperature from sensor output voltage using a linear least-squares regression algorithm. It has been determined that use of the linear least-squares regression algorithm has resulted in a data bias.
The Snow Survey and Water Supply Forecasting Program is actively working on a correction technique for this issue.
