There’s a good real life lore video on nebula. They killed their traditional agricultural system with an extractive well water fueled one which depletes aquifers. Neighboring rivers from other countries got dammed. They rerouted their own rivers for dams and dried out lakes and flooded a salt deposit making the whole river salty. They also focus a lot on domestic agriculture at the expense of water depletion. All around poor mismanagement using outdated American plans to build their dam infrastructure without environmental assessments.