(b) The model below represents a watershed in a mountainous area.

The figure presents a diagram of a watershed in a mountainous area. At the top of the mountain, near the right side of the diagram are two clouds labeled Precipitation, one with rain droplets and the other with snowflakes. A river runs down the middle of the watershed. On both sides of the river, evergreen trees are scattered throughout the watershed. A small lake labeled A branches off the river near the top of the watershed. Near the middle of the river are three small tributaries. The first tributary is labeled B, the second tributary is unlabeled, and the third tributary is labeled C. The river drains into a larger lake near the bottom of the watershed. Underneath the watershed is labeled Groundwater, aquifer.
(i) Describe how the geology in a watershed affects the groundwater recharge.