Underground Habitat / Bunker HELP Needed

Hello, long time reader, first time poster. Been really interested in this site and it has really opened my eyes to what I have had as a gut feeling for some time now. Keep up the great work guys!

I am in planning and getting ready to build a underground shelter and had a few questions about the design and use of such a thing. I have read in multiple places that digging below ground about 10 meters (30 feet) is an appropriate depth to maintain a good temperature year round. My question is how does such a shelter fare during a rainstorm or worse a flood where ground water is a problem at such depths. I am planning on building on a elevated area but this is still a concern for long term use. Has anyone had much experience with such shelters?

Ideally I would like to build a shelter that can provide warmth and fresh air, while protecting from the elements and providing a safe cover from undesired intrusion. Electricity is also a concern, but wanted to make sure that everything was in place underground before I started to worry about generators or solar energy.

Any design or helpful guides would be greatly appreciated. Thanks a lot!

You need not be that deep. Try to optain a book titled "The Fifty Dollar And Up Underground House Book." That may well help you.

respectfully

reluctantpawn