It's called surface water.
More porous soil (sandy soil) facilitate better movement of water under the ground where as clay obstruct it.
no he needs running water and pluming
runoff
Its runoff
surface runoff (also known as overland flow or terrestrial runoff) is the unconfined flow of water over the ground surface, in contrast to channel runoff (or stream flow)
Water flows on the ground because it has a lesser Desitiythan the ground it flows over. The Desity of water is 1, that's why water flows over or on the ground.The above answer is for "Why"The answer needed is for "How"
better over water
They face running out of water because it doesn't rain often in the desert, they face being blown over by the wind because the roots aren't very stable in the ground because the ground is sand, they also face predators trying to break them to get the water that they store.
Ancient discoveries, where people as long ago as 6,000 BC picked up alluvial stones from the ground that had been washed downstream by running water, running over volcanic pipes that brought the stones to the surface of the earth.
Water beetles live in water, but they can only survive in fresh water or chlorinated water, they can't live in saltwater. There are over 2,000 species of water beetles and they are found in fresh water all over the world.
nothing
running water