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Question of the day: 1. What are some examples of local dams and reservoirs? 2.What are the benefits of dams? 3.What are the disadvantages of dams?. Local examples. Dams and Reservoirs. Benefits: Ensure year-round supply of water with regulated flow Generate electricity - PowerPoint PPT Presentation
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Question of the day: 1. What are some examples of
local dams and reservoirs? 2.What are the benefits of dams? 3.What are the disadvantages of
dams?
Local examples
Dams and Reservoirs
• Benefits:– Ensure year-round supply
of water with regulated flow
– Generate electricity– Provide recreational
activities• Disadvantages– Alter the ecosystem– Reduce sediment load
Dams and Reservoirs- Problems created by them
• Salmon Population in Columbia River very low due to dams that impede migration
• Fish ladders help, but are not effective enough
Klamath River Video Clip
Salmon Run Game
Review Salmon Run game
• Objectives: To make it to adulthood and reproduce.
• Question about salmon: see front board
Movement of Dam Removal
• http://www.youtube.com/watch?v=H9wJOAtSk6s&safety_mode=true&persist_safety_mode=1&safe=active
Stop Eco
Dams and Reservoirs• Glen Canyon Dam
– Regulated flow has changed ecosystem• To rectify situation
– Canyon has been flooded several times– Small floods compared to natural floods– Still helps rebuild habitat
Read pgs. 340-347• Questions: Who is in charge of building dams
in the US?• What was one main reason for the building of
dams? Which rivers/river communities were they trying to protect?
• What is the controversy behind the Meramec Dam? What was a local controversy over dam building?
• Explain our states unique circumstances with the Delaware River Basin.
Questions from pg. 340-347
• Describe how dams provided easier travelling along the river.
• What are the advantages/disadvantages of hydropower?
The plight of the salmon
Dams and Reservoirs
• Benefits:– Ensure year-round supply
of water with regulated flow
– Generate electricity– Provide recreational
activities• Disadvantages– Alter the ecosystem– Reduce sediment load
Delaware River Basin Commission Report on Gas well drilling in the basin
• http://www.phillyburbs.com/news/news_details/article/28/2010/december/10/debate-expected-over-gas-drilling-rules.html