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Pinto Valley Mine Groundwater Pumping and Expansion

Sector: Metal • Location: Globe, Arizona, United States

Source: Coyote Gulch

Project
Operational With Expansion Approved

The Pinto Valley Mine, a massive open pit copper and molybdenum operation in central Arizona, resumed heavy groundwater pumping after being acquired by Capstone Copper Corporation in 2013. The mine pumps groundwater for dewatering and operational uses, withdrawing about 8,932 acre-feet of water in 2024. The mine's groundwater pumping has been linked to a significant reduction in the flow of Pinto

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The project “Pinto Valley Mine Groundwater Pumping and Expansion” is an infrastructure initiative in the Metal sector, located in Globe, Arizona, United States. Taiyo aggregates data on it from Coyote Gulch.

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Participants

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operational with expansion approved

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Description

Description

The Pinto Valley Mine, a massive open pit copper and molybdenum operation in central Arizona, resumed heavy groundwater pumping after being acquired by Capstone Copper Corporation in 2013. The mine pumps groundwater for dewatering and operational uses, withdrawing about 8,932 acre-feet of water in 2024. The mine's groundwater pumping has been linked to a significant reduction in the flow of Pinto Creek, affecting local springs, streams, and riparian ecosystems. The mine had to reduce production by about 37% in 2025 due to water constraints caused by drought conditions. The mine was approved for expansion in 2021 despite concerns about water impacts.

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Source reliability

High

Data quality score

100%

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URL

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