If you’re relocating to the San Jose area, there are a few tools you can use for resources as you evaluate different parts of the region. When I started this website, I had books listed that you could purchase. Today, mostly I have websites that you should bookmark – for free!
Natural & Environmental Hazard Information Tools You Can Use
Natural hazards are found throughout the United States, often the major one people consider is the one hundred year flood plain. Here in the Golden State, we have some additional concerns relating to fire and earthquake risks.
- California MyHazards can display a map anywhere in the state with information relating to liquefaction zones, earthquake faults, 100 year flood plains, and high fire risk areas. (The info for the very high fire hazard severity zone has not been updated, so use the Cal Fire map for that info.)
- Cal Fire map for all of California with the high fire severity zones shown – zoom in to find the areas of concern
- Flooding from Dam Failure (potentially caused by earthquakes as well as other possibilities) is scary. Learn more about those zones at the link I’m providing here. (As of this writing, the Approved Inundation Maps link is not working.)
A Barclay’s Locaide will outline earthquake faults, flood plains, and other natural hazard zones you might want to know about. This is now out of date, but you may be able to locate a used one online or see if a local real estate association of Realtors bookstore has it available.
Earthquake Zones of Required Investigation can be used throughout the state to identify landslide, liquefaction, and other zones relating to quakes.
Something else to know is that there are state mapped earthquake faults (the more active ones, such as the Hayward or San Andreas Fault) and also the city, town or county mapped fault zones (for example, the Shannon Fault). The latter may have been dormant for 11,000 years or more.
When buying a home in California, consumers are given a link to download brochures, or one combined document, on a variety of hazards. I’m not sure that most of them take the time to read it, but it’s excellent info and I highly encourage anyone living in CA, whether renting or owning, to read it:
Homeowner’s Guide to Earthquake Safety & Environmental Hazards
Environmental Hazard Zones: Research Tools You Can Use
- Local concerns also include environmental ones, such as Superfund sites.
- Some sites with spills, leaking underground storage tanks, or other issues can be found at this Cleanups in my community page (nationwide info)
- Mercury, or quicksilver, was mined in Almaden (New Almaden and related mines) and east Los Gatos (Guadalupe Mine area) – it is a naturally occurring element in cinnabar. For that reason, creeks in those areas should not be entered or fished in. It can be found in other creeks and rivers, too, but primarily in Almaden.
- Asbestos is another naturally occurring element here. It was prized for being somewhat fire resistant and was mined under Communications Hill. It’s something to investigate if you want to live in that area.
- Oil, gold silver, and other elements were mined here as well as granite (we still have quarries active in Santa Clara County today, a couple in the Cupertino area and one in the hills by Lexington Reservoir just outside of Los Gatos). Some old mines are not mapped if they are on private land, so one of the disclosures we have relates to unmapped, abandoned mines., which may be found in more rural pockets of the county.
- Flooding from dam failure (dams are human made, hence it’s not a “natural” hazard ) is a risk in a large part of Silicon Valley. Most of the areas at risk from flooding due to dam failure are listed on this site.
- Noise pollution: use either How Loud or Noise-Map. We discussed the pros, cons, and shortcomings of these on our main blog: Measuring Noise Pollution.
Other Priorities for the Tools You Can Use list
In addition to natural and environmental hazards, there are big plusses that will attract new residents.
- A School District Map of the County with school district boundaries will be a big help to you here, as schools are the #1 thing that drive home values. You can buy one at bookstores or online for about $5
- If you want to read about individual communities within Santa Clara, I have an over view in popehandy.com (covers a broad area) and do market updates on many areas within SanJoseRealEstateLosGatosHomes.com (my main blog)
- PG&E’s high transmission gas lines are now mapped for the public to see.
P, G & E’s natural gas transmission pipelines map
(you’ll have to zoom in to your area)
It is also helpful to have a knowledgeable Realtor as your resource! Please call me if you’d like assistance in your move to SIlicon Valley. I’d be happy to help you.
Silicon Valley liquefaction zones (on SanJoseRealEstateLosGatosHomes.com, our Valley of Heart’s Delight blog)
Elevation map – learn your home’s elevation (on SanJoseRealEstateLosGatosHomes.com, our Valley of Heart’s Delight blog)
Do you have a high water table? (on our Live in Los Gatos blog)