If you’re interested in following the drop in water level at Lake Shasta, the California Department of Water Resources has a great site where you can see all the measurements for the reservoir. Most of US 99 will be fully exposed when the lake hits 900 feet (167 feet below full pool) which is likely sometime in August 2021.
Links
Industrial Archeology
This website has a lot of good photos showing various abandoned roadways, railroads, and other structures throughout the San Francisco Bay Area and beyond. It is worth a visit.
Seismographs ONLINE
The California Integrated Seismic Network has many of their seismometers online and are available at:
http://www.scsn.org/index.php/earthquakes/live-seismogram-feed/index.html