Changes

A dam is a physical barrier constructed across a river or waterway to control the flow of or raise the level of water.  

A '''dam''' is a physical barrier constructed across a [[river]] or waterway to control the flow of or raise the level of water.  

The purpose of a dam may be for flood control, irrigation needs, hydroelectric power production, and/or recreation usage.

The purpose of a dam may be for flood control, [[irrigation]] needs, hydroelectric power production, and/or recreation usage.

[[Category:energy]]

[[Category:energy]]