Book 16, Question 122
How Do Scientists Find Water That Is Hidden Underground?
Scientists find hidden water by combining many clues, like a team of detectives! They study rocks, drill test wells, and use tools that peek underground. They even use satellites in space.
More fun facts
- Gravel, sand, sandstone, and limestone are some of the best rocks for holding groundwater.
- In the dry American Southwest, water-loving trees like cottonwoods and willows can be a clue that water is not far underground.
- Springs, seeps, swamps, and lakes show that there is some groundwater, but not always enough to use.
- Records from wells that were already drilled are a big help, because drilling new holes costs a lot.
- Hydrologists may drill test holes and run a pumping test to learn how much water an aquifer can give.
- A pumping test also shows how a new well would lower the water in other wells nearby.
Sources: U.S. Geological Survey
Questions kids ask
What is an aquifer?
It is a layer of rock or sand underground that holds water and lets it flow into wells.