A well that tracks the health of the San Pedro River in southern Arizona has gone dry for the first time in nearly 40 years.

The well was one of nine established by court rulings in 2023 and 2024 that set the amount of water the river is entitled to.

River advocates say the dry well is further evidence that water users, especially the U.S. Army's Fort Huachuca and the town of Sierra Vista, are pumping too much groundwater.

A court-ordered monitoring well tracking the health of the San Pedro River has run dry, according to new government data, and environmental groups say it's further evidence that overpumping at the U.S Army's Fort Huachuca is endangering the last intact river system in southern Arizona.

The Summers monitoring well was recorded as dry on June 30, according to data from

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