The pros and cons of hydroelectric power on our environment

I need the annotated bibliography at least by May 3. I have given the project guidelines in a document. I have already done a thesis statement here Thesis Statement: The pros and cons of hydroelectric power on our environment. Hydroelectric electric power, also known as dams is just one way, we get electricity to support our day to day lives. Dams, create a large amount of the worlds power and is a great renewable source as it does not pollute the air like fossil fuels or coal. However, dams or hydroelectric power can also be harmful to our environment as it effects natural land area and disrupts wildlife habitats. This in return can hurt the environments natural water ways and destroy certain wildlife in an area. One talking point to include Decommissioning of dams that are not viable for production of electricity/ a threat to environment (Elwah)