Less sediment would be deposited along the shoreline. Beaches would form from different materials. Sand dunes would become smaller. Deltas would become larger.
I gave my students this multiple choice question: A beach is formed when sediment is deposited along a shoreline. What would most likely happen if rivers that empty into the ocean were dammed?

Only one answer is correct among these 4 choices:
- Less sediment would be deposited along the shoreline.
- Beaches would form from different materials.
- Sand dunes would become smaller.
- Deltas would become larger.

Could you tell me which one is correct?

Less sediment would be deposited along the shoreline.