Retaining Your Supplies

Ration your supplies. You will need to ration to survive, obviously; therefore you will eventually expose yourself to the radiation (unless you are in a specific shelter with food and water).

Processed foods are okay to eat, so long as the container has no punctures and is relatively intact.
Animals may be eaten but, they must be skinned carefully with the heart, liver and kidneys discarded. Try not to eat meat that is close to the bone, for bone marrow retains radiation.

How to Eat Dove or Pigeon

How to Eat Wild Rabbit

Plants in a "hot zone" are edible; those with edible roots or undergrowth (carrots, potatoes...) are highly recommended. Use an edibility test on the plants. See How to Test if a Plant Is Edible

Open water may have received fallout particles and is harmful. Water from an underground source, such as a spring or covered well, is your best bet. (Consider making a basic pit-style solar still, as described in How to Make Water in the Desert.) Use water from streams and lakes only as a last resort. Create a filter by digging a hole about 1ft from the bank and drawing the water which seeps in. It may be cloudy or muddy so allow the sediments to sit, then boil the water to ensure safety from bacteria. If in a building, the water is usually safe. If there is no water (there most likely won't be), use the water already in the pipes by opening the faucet at the highest point of the house to let in air, then open a faucet at the lowest point of the house to drain the water.

See also How to Get Emergency Drinking Water from a Water Heater.

Know How to Purify Water.