If it’s at all below the level of the water table, it will flood, concrete, steel, or other materials be damned. Sure, there is some top-notch engineering you can do to keep the water out, but it’s expensive. One solution is to put the bunker at ground level and then pile dirt on top of it, but you need very large amount of dirt to protect it from impact.
7. A selection of non-GMO, heirloom seeds suitable for your climate zone. Tough times may include expensive produce that’s difficult to come by. You can grow your own, but there’s a very high learning curve involved. Stock up on seeds for foods you know your family will eat. Heirloom seeds are preferred since they haven’t been genetically modified. Learn how to save seeds from one season to the next, but whatever you purchase,
Though its light weight and long shelf life are ideal for navigating harsh conditions, freeze-dried food is probably most famous as a cultural curiosity: Like many Americans, I discovered it in a museum gift shop, gawking at the styrofoam-like ice cream that astronauts used to have for dessert. More recently, I encountered it at a disaster preparedness convention in Raleigh, North Carolina, where smiling, gray-haired preppers manned tables piled with plastic bags full of vegetables, meats, and stews.