The worst places to be would be near missile silos or runways capable of being used by strategic bombers, as those would be targeted by surface bursts. Air bursts would be used for pretty much all other targets. No matter where you would be, it would be a good idea to build a fallout shelter in the crisis-period before the nukes start flying. If you're near something that would be an actual target, and for some reason can't evacuate, a blast shelter should be built instead. Fallout shelters protect from overpressure better than houses, but you'd still be killed in one near an explosion. Provided you have stored up a good supply of water before hand, that shouldn't be an issue. You should still have some left over after the fallout decays enough to allow limited outdoor excursions to either find or dig for water, which can be purified from fallout via settling and a homemade earth filter, while boiling and either iodine or a low-level hypochloride like Clorox can be used to kill microorganisms. Getting food would be the bigger problem, which is why Nuclear Survival Skill recommends a shelter have at least a full year's supply of grain, beans, powdered milk and the like. Cooking oil, salt, and multivitamins should be in an even longer supply. Vitamin C should be in as long a supply as can be kept.