Groundwater deeper than 500 m contributes less than 0.1% of global river discharge

At depths of over 500 m, deep groundwater has long residence times and likely contributes less than 0.1% to global streamflow and only sporadically connects with the surface terrestrial water cycle on geological timescales, according to estimates derived from the chloride mass balance approach.

Bibliographic Details
Main Authors: Grant Ferguson, Jennifer C. McIntosh, Scott Jasechko, Ji-Hyun Kim, James S. Famiglietti, Jeffrey J. McDonnell
Format: Article
Language:English
Published: Nature Portfolio 2023-02-01
Series:Communications Earth & Environment
Online Access:https://doi.org/10.1038/s43247-023-00697-6