California Precipitation Modeling (IMAGE) DOE/Pacific Northwest National Laboratory Caption The annual California snowpack varies based on winter precipitation. Credit Photo by Russ Allison Loar | Flickr.com Usage Restrictions Photo credit. Flickr restrictions License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.