Satellite Water Maps Are Not Irrigation Orders: Lessons From Texas and South Asia
Rice fields around Baniachong, Bangladesh, March 17, 2021. Natural-color Landsat 8 observation: NASA Earth Observatory/Lauren Dauphin, using USGS data. Source · Use terms World · Water & food Satellite water maps are not irrigation orders. Satellite water maps reveal regional stress. Lessons from Texas and South Asia show what farmers still need before changing irrigation. By Newjinmedia · Public-source reporting and analysis · October 29, 2026 From the regional signal to the field A field can look green from orbit while the aquifer beneath it is losing water. A reservoir can hold more water while a farm downstream receives less. For an American reader following the drought in the Texas High Plains, or an irrigation project in South Asia, those are not contradictions. They are different parts of a water system—and they require different measurements before anyone decides when to run a pump. The useful international comparison is not a league table of thirsty countries. It is the d...