What are the positive and negative impacts of dams on the Colorado River, and specifically the effect of Glen Canyon Dam on the Grand Canyon?

What are the positive and negative impacts of dams on the Colorado River, and specifically the effect of Glen Canyon Dam on the Grand Canyon? Should more be done to minimize the impacts on Grand Canyon and the lower Colorado?

What are the positive and negative of dams on the Colorado River, and specifically the effect of Glen Canyon Dam on the Grand Canyon? Should more be done to minimize the impacts on Grand Canyon and the lower Colorado? Listed below are some example links with information related to effects of Glen Canyon Dam on the Colorado River. There is a great deal of information about this one the web. For this discussion you should investigate how the dams and reservoirs changed the Colorado River and the natural habitats in Grand Canyon. Consider the positive aspects of having the dams in terms of power generation, water storage and recreation. Glen Canyon video from National Geographic (03:25) (Links to an external site.) National Geographic News article (Links to an external site.) USGS research summary (Links to an external site.) MS NBC article (Links to an external site.) Salt Lake Tribune article (Links to an external site.) National Geographic feature on the Colorado River Delta (Links to an external site.) EOS article: Building Sandbars in the Grand Canyon (Links to an external site.) New York Times article: Unplugging the Colorado River