![]() ![]() We direct other researchers interested in accessing well data to the supplementary materials, where we document websites for directly downloading databases and provide contact information for agencies to request access to data. Data and materials availability: Groundwater well data that support our analyses are available through web pages and personal communication with national and regional-scale agencies some agencies require consent to share well data, some prefer that requests go through their agency, and other agencies require records requests. Competing interests: The authors declare no competing interests. ![]() oversaw, compiled, and quality controlled the well completion and monitoring well data. Funding: This research was completed without external funding. Kirchner for comments that improved our manuscript. Leiby for assistance compiling monitoring well data and J. Phoenix and Scottsdale take 1/5 of the flow of the Colorado. And economists say that by 2025, water scarcity will cut global food production by more than the current U.S. The Colorado no longer makes it all the way to the Pacific as it once did. The Southeast US is one of the threatened areas: this is not only a global issue, but also a local one. The Rio Grande now ceases to exist shortly after it passes El Paso. Many other water courses that were once perennial now also have temporary flow regimes due to the effects of water extraction for human use or as a result of changes in land use and climate. We thank agencies for providing well construction data for analyses and for their assistance controlling the datasets for quality C. In our own country we have the disappearing of the Colorado River, whose reservoirs were once the lifeblood of seven states. Temporary rivers and streams that naturally cease to flow and dry up can be found on every continent.
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