ELI5: Explain Like I'm 5

Hydraulic tomography

Hydraulic tomography is like taking pictures of water underground so that we can understand where the water is, and how it's moving.

Imagine you have a big water bottle with a straw in it. If you put your finger on the straw and blow really hard, you can push the water out of the straw. This is kind of like how hydraulic tomography works.

Instead of blowing, we inject water into the ground at different locations and at different times. Then we measure how the water moves through the ground, kind of like taking pictures of it.

By looking at these pictures, we can figure out where the water flows easily and where it's harder for it to move. This can help us better understand underground water systems, like aquifers or rivers, and even help us find new sources of water underground.