For any of you interested in Short-lines there is a website called "Foothill Rails" that features information on just about every shortline in Northern California.
Here is the link to the site for any of you interested :http://www.trainweb.org/foothill/index.html

The site features a page on the Butte County Railroad which used to come through my town until the tracks were removed in the 1970s, I even have the honor of having two of my pictures on the site at the bottom of this page: http://www.trainweb.org/foothill/frbutteco.html

The site is really interesting and defiantly worth a visit!

The site is missing a number of shortlines, including the Yreka Western which is still in service at over a century between Yreka and Montague, with 11 miles of track.

I know, It's more of a site for fallen flags rather than railroad still in operation, though I am sure he would put up some info on the Yreka Western if you sent it to him.