Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 exam•Written by the Fiveable Content Team • Last updated September 2025
Definition
Dams are structures built across rivers or streams to control the flow of water and create reservoirs. They are used for various purposes such as flood control, irrigation, hydroelectric power generation, and water supply.
Related terms
Tidal Waves: Tidal waves, also known as tsunamis, are large ocean waves caused by underwater earthquakes or volcanic eruptions. Unlike dams that control water flow, tidal waves are natural phenomena that can cause significant destruction along coastlines.
Reservoir: A reservoir is an artificial lake created by constructing a dam across a river or valley. It stores water for various purposes such as drinking water supply, irrigation, and recreation activities like boating and fishing.
Hydroelectric power refers to electricity generated from flowing or falling water. Dams play a crucial role in hydroelectric power generation by harnessing the energy from moving water to turn turbines and produce electricity.