Labeled diagram of a watershed showing the interaction between groundwater and surface water, including key hydrological processes.

- Precipitation falls on the mountains and land.
- Some precipitation becomes surface water, flowing into rivers and lakes.
- Some precipitation infiltrates the ground, becoming groundwater.
- Groundwater flows slowly through underground layers.
- Surface water evaporates from lakes and transpires from plants.
- Evaporated and transpired water rises to form clouds, completing the cycle.