They use flood irrigation. How Efficient is Flood Irrigation? Flood irrigation is 50 to 60% water efficient, meaning 50 to 40% of water released in a flood irri

They use flood irrigation. How Efficient is Flood Irrigation? Flood irrigation is 50 to 60% water efficient, meaning 50 to 40% of water released in a flood irrigation system is lost either to runoff or rapid soil infiltration. Flood irrigation is the least water-efficient irrigation system. https://www.agrivi.com/blog/modern-management-of-centennial-furrow-irrigation/#:~:text=How%20Efficient%20is%20Flood%20Irrigation,least%20water%2Defficient%20irrigation%20system https://www.agrivi.com/blog/modern-management-of-centennial-.... And then you have to imagine that these places are hitting 110+ degrees recently, so they lose even more water.