An Arizona Republic article reports, “Groundwater pumping has caused stream flow in U.S. rivers to decline by as much as half over the last century, according to new research by a University of Arizona hydrologist that strengthens the connection between groundwater and surface water.”

“The research confirms that groundwater losses, primarily due to pumping water from below the surface for agricultural and municipal uses, decrease the overall surface water supply and have caused some smaller streams to dry up. This has a downstream effect that influences water levels far beyond the groundwater pumping location.”

 The article quotes hydrology professor Reed Maxwell: “Everything is connected in the hydrologic cycle.”

“The study focused on the continental United States, but it has important implications for Arizona as the state continues to grapple with groundwater pumping issues and drying waterbeds”

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