Water Shortage

Summary
Percent likelihood per year, over the next 20 years, of water shortage.
General Information
What is it?
Anticipating water shortages allows for anticipatory management action. This indicator can be annually calculated using 1) up-to-date, climate-sensitive forecasts of precipitation, evapotranspiration, and stream-flow and 2) all water uses, including environmental uses such as in-stream flows and reversing over-drafted basins, and required uses such as treaty-obligated water.