Water is resource objects keeping meadows green. It comes from raining cloud and can be stored in a well. Players can gather and move water from one well to another to keep their meadow green.
A tribe can only collect water from a well, not directly from the rain. So a well must be built in meadow and filled by rain and then be transported. Water is used when growing plants. If a meadow runs out of water it turns grey and plants stop growing on it.