Question

What is a rock dam ​

Answer 1

Answer:

here's ur answer dude

Explanation:

Small barriers or dams constructed of stone, bagged sand or gravel, or other durable material across a drainage way. Purpose: To reduce erosion in a drainage channel by restricting the velocity of flow in the channel.

hope it helps

Answer 2

Explanation:

Rock dams are used primarily to control water velocity, conserve soil, and improve land. They are used when other flow-control practices, such as lining the channel or creating bioswales, are impractical.