Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Renewable groundwater stress ratio derived from groundwater withdrawal statistics. (a) Overstressed conditions are shown as the rate of withdrawals assuming no available recharge (mm/yr). (b) Variable stressed conditions are dimensionless with a positive value of recharge and a negative value of use.
