DAMS

HOW DAMS ARE USED IN MINNESOTA

• Dams in Minnesota are used to maintain flood control
• They are also used to store water.
• https://www.internationalrivers.org

LAWS FOR DAMS

• You need a permit to make sure its a safe design
• Dam hazard classification
• Class 1 : any loss of life or serious hazard or damage to healthy main highways , high value industrial or commercial properties, major public utilities or serious direct or indirect economic loss.
• http://damsafety.org/media/Documents/STATE_INFO/LAWS_&_REGS/Minnesota_L&R.p...

HOW DAMS IMPACT THE ENVIRONMENT

• The dam walls block fish migrations which with some species, completely separate spawning habitats from rearing habitats
• The dams also trap sediments, which is bad because if there aren't any sediment in the river than the river erodes the river bank to get the sediment back.
• Large dams have led to the extinction of many aquatic species.
• The dams trap sediments, which is bad because if there aren't any sediment in the river than the river erodes the river bank to get the sediment back.
• https://www.internationalrivers.org

HOW DAM BUILDING AFFECTS MINNESOTANS.

• Pros. Dam building affects us because dams can generate power/electricity.
• They can hold back floods.
• They can store water and take the oxygen out of the water.
• Cons. When dams take the oxygen out of the water it kills fish.
• https://www.internationalrivers.org/river-revival-bulletin/no-37-may-29-200...

RECENT NEWS ON DAM BUILDING.

• One of Africa's biggest dams is falling apart. The mosul dam is the largest structure in Iraq.
• If that dam breaks as many as five hundred thousand people would drown and leave a million homeless.
• http://www.newyorker.com/tech/elements/one-of-africas-biggest-dams-is-falli...