Dehydration
A creature requires an amount of water per day based on its size, as shown in the Water Needs per Day table. A creature that drinks less than half the required water for a day gains 1 Exhaustion level at the day's end. Exhaustion caused by dehydration can't be removed until the creature drinks the full amount of water required for a day. See also "Exhaustion."
Water Needs per Day
| Size |
Water |
Size |
Water |
| Tiny |
1/4 gallon |
Large |
4 gallons |
| Small |
1 gallon |
Huge |
16 gallons |
| Medium |
1 gallon |
Gargantuan |
64 gallons |