Rainwater isn't the only form of water, farmers in Iowa pump groundwater too, and those aquifers are becoming seriously depleted in a lot of the plains states.

Rainwater isn't the only form of water, farmers in Iowa pump groundwater too, and those aquifers are becoming seriously depleted in a lot of the plains states. This is causing pretty serious drops in groundwater levels in a lot of areas and won't be sustainable indefinitely. https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/wss-gw-depletion-us-map-trend.png?itok=dSuNrKyA https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/... https://www.usgs.gov/special-topics/water-science-school/science/groundwater-decline-and-depletion https://www.usgs.gov/special-topics/water-science-school/sci...