Future of Dams Flashcards
The water we use at BC comes from the _________ river in central MA
Swift River
Did Boston ever use local wells and springs to get their water?
Yes, prior to 1975
In 1975, what water source did Boston switch to drawing from?
Jamaica Pond
Chesnuthill Reservoir built a storage for Lake ______________
Cochituate
Reservoir water is disinfected with ________ and _______ to kill microbes and viruses
UV & ozone
What is safe yield?
maximum withdrawals that can be made from a water source during years in drought
What is the purpose of Glen Canyon Dam?
- Flood control
- Generate power for other water projects on the Colorado River
- Trapping sediment, prolonging the longevity of Lake Mead
- Recreational purposes
What effects does Glen Canyon Dam have on the Grand Canyon sediment load and habitat?
- Boulders delivered by landslides, build up in the canyon
- Temperature affects fish
- Invasive trees and sandbars emerge
- Erosion of sandbars
Experimental floods
get sand from the channel onto sandbars
Why are sandbars valuable?
- Function as habitat
- Recreation (camping)
- Preserve archeological sites
What are the main water demands in America?
domestic supply and agriculture (irrigation in arid climates, like the West — & CA)
Mississippi River
1700s-1900s = major construction of levees and dams
- Levees raised over river stage and failed to control water
- Needed to be blasted downstream
Activists have painted cracks on the faces of which of the following dams?
A. Hetch Hetchy Dam, CA
B. Matilija Dam, CA
C. Glines Canyon Dam, WA
All of the above
According to DamNation, is the main purpose of the lower Snake River dams?
navigation
What is the only state in the easter U.S visited by the filmmakers in DamNation?
Maine
