What is one example of a debate rebuttal for hetch hetchy valley?

One example of a debate rebuttal for the Hetch Hetchy Valley dam proposal is the argument that the environmental impact of flooding the valley outweighs the benefits of water supply. Critics emphasize that the valley's unique ecosystem, including rare plant and animal species, would be irreparably harmed, undermining the very natural beauty and biodiversity that attract tourism and contribute to California's economy. Furthermore, advancements in water conservation and alternative water supply methods could provide sustainable solutions without sacrificing natural landscapes.