Desert Survival

If you’re low-level, be ready to carry a lot of food and
water with you. A single Medium creature needs between
2 and 3 gallons of water per day in the desert. As a gallon
of water weighs over 8 pounds, the weight quickly adds
up. Add to that a full pound of food each day, and each
character needs to carry 18 or more pounds of sustenance
on their back for each day in the desert. Small characters
have it a little easier (they can survive on half as much food
and water), but suffer from a lower carrying capacity.
Without water, you’ll last 1 day plus a number of hours
equal to your Constitution score. Without food, you can
survive 3 days. Once you hit either time marker, you must
make a Fortitude save (DC 10 + 1 for each previous check) or
take 1d6 points of nonlethal damage and become fatigued.
You can’t recover from this nonlethal damage (even with
magic) until you get food or water.

Desert Survival

Legacy of Fire draco