# Ancient groundwater: Why the water you’re drinking may be thousands of years old

- Link: https://www.widthness.com/the-water-youre-drinking-may-be-thousands-of-years-old-growing-demand-for-deeper-wells-is-tapping-ancient-reserves/
- Published: 2021-10-09T09:15:52-05:00
- Author: Curated by Theresa Wysocki

Image caption: Flow timescales of groundwater through different layers. USGS. Article by Marissa Grunes, Alan Seltzer and Kevin M. Befus. The Conversation – October 7, 2021. Communities that rely on the Colorado River are facing a water crisis. Lake Mead, the river’s largest reservoir, has fallen to levels not seen since it was created by the construction of the Hoover Dam roughly a century ago. Arizona and Nevada are facing their first-ever mandated water cuts, while water is being released from other reservoirs to keep the Colorado River’s hydropower plants running. […] Click here to view original web page at theconversation.com