What regions are north, central, and south in the graph of CA snow water content?

[gregodorizzi]

I'm wondering what regions in California correspond to north, central, and south in the graph at this website: http://cdec.water.ca.gov/snowapp/swcchart.action. The snow falling outside my own window in Colorado right now has given me some idle time to ponder.

[longri]

I've seen it on the CDEC website before but I can't recall where. I found a text file on my computer that defines those three regions but, again, I don't have a source. The bottom line is that most of what we think of as the High Sierra is in the southern section.

North Section - Trinity through Feather & Truckee
Central Section - Yuba & Tahoe through Merced & Walker
Southern Section - San Joaquin through Kern and Owens

[TehipiteTom]

Also, this page has a very basic graphic showing the watershed regions on a map of California.

[gregodorizzi]

Thanks for the replies!