That link says that the environmental water use happens largely in areas that are not competing with agriculture. E.g. protecting rivers, streams, and wetlands

That link says that the environmental water use happens largely in areas that are not competing with agriculture. E.g. protecting rivers, streams, and wetlands in the redwoods. The answer to "we're being wasteful with water during a drought" is not "let's irreversibly destroy habitat and threaten species so we can continue to be wasteful."