Maybe not perfect answers, but letting beavers do their thing is somewhat easy and can lead to shockingly large amounts of water being conserved even in regions

Maybe not perfect answers, but letting beavers do their thing is somewhat easy and can lead to shockingly large amounts of water being conserved even in regions experiencing desertification[1][2]. The author of the linked article wrote a book about it, which is pretty fascinating, but there's also been studies in places like Colorado that view it as important enough that I believe it's now part of the state plan for water management. [1] https://www.hcn.org/issues/50.15/wildlife-how-beavers-make-the-desert-bloom https://www.hcn.org/issues/50.15/wildlife-how-beavers-make-t... [2] https://www.npr.org/2018/06/24/620402681/the-bountiful-benefits-of-bringing-back-the-beavers https://www.npr.org/2018/06/24/620402681/the-bountiful-benef...