Field-scale water diagnosis, consumptive-use analysis, and irrigation simulation.

The current water challenge

In many places, the problem is not that water has disappeared. It is that supply, demand, climate, and timing no longer line up reliably.

Across parts of the United States, especially the central and Southwestern regions, water demand can approach or exceed locally available supply, with irrigation playing an important role in many water-limited areas. Groundwater remains essential to agriculture, while long-term declines in major aquifers show why better information and better management matter.

This is not a story in which everything has already gone wrong. Farmers, water managers, researchers, agencies, communities, and technology developers can still improve how water is measured, understood, allocated, and used. The practical work is to reduce avoidable losses, protect productive agriculture, understand field response, and make decisions from evidence rather than assumption.