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Hydrology

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Patagonia mine faces scrutiny after heavy metal discharge
Environment

Patagonia mine faces scrutiny after heavy metal discharge

  • Henry Brean
  • Updated Feb 6, 2026

A critical minerals mine near Patagonia is upgrading its water treatment plant and answering questions from concerned residents after exceeding its permitted discharge level for a potentially toxic heavy metal.

Deal will reduce groundwater overpumping in southeast Arizona
Subscriber

Deal will reduce groundwater overpumping in southeast Arizona

  • Tony Davis
  • Updated Jan 11, 2026

Attorney General Kris Mayes says her new agreement with a mega-dairy company will cut groundwater pumping in Southeast Arizona's Willcox Basin…

Owner of huge Arizona dairies makes groundwater deal with state
Local news

Owner of huge Arizona dairies makes groundwater deal with state

  • Tony Davis
  • Updated Jan 10, 2026

Arizona Attorney General Kris Mayes says "megadairies" near Willcox will take 2,000 acres of farmland out of production and set up fund to help neighbors dig deeper wells for water.

Local opinion: The mirage of ‘assured’ water in Arizona
Columnists

Local opinion: The mirage of ‘assured’ water in Arizona

  • Rusty Childress Special to the Arizona Daily Star
  • Dec 31, 2025

Seven states. One river. Phoenix did not grow to five million people by accident. It grew because semantics made scarcity sound manageable.

Letter: The Root Cause
Local-issues

Letter: The Root Cause

  • Cal Rooker, Oro Valley
  • Dec 30, 2025

Another article about the doom and gloom of Colorado River water in the paper this morning. I appreciate the information, but rarely if ever s…

Lake Powell could drop to crisis levels in 2026
Subscriber

Lake Powell could drop to crisis levels in 2026

  • Tony Davis
  • Updated Jan 16, 2026

As negotiators fight over how to curb overuse of the depleted Colorado River for the next 20 years, the river itself is on the verge of a shor…

Stalemate deepens as Colorado River states face water crisis
Subscriber

Stalemate deepens as Colorado River states face water crisis

  • Tony Davis
  • Updated Dec 26, 2025

LAS VEGAS — Negotiations over how to stabilize the shrinking Colorado River are so deadlocked that one of the seven state officials involved n…

Local opinion: Tucson has the rainfall it needs, but we’re not using it
Columnists

Local opinion: Tucson has the rainfall it needs, but we’re not using it

  • Caitlin Clark Special to the Arizona Daily Star
  • Dec 7, 2025

I recommend the city adopt a policy requiring all new developments to include stormwater retention infrastructure, specifically permeable surfaces and onsite basins.

Environmental groups, tribal leader decry Colorado River stalemate
Environment

Environmental groups, tribal leader decry Colorado River stalemate

  • Tony Davis
  • Updated Dec 19, 2025

The window is closing fast to secure the Colorado River's future "and move beyond crisis-driven policymaking," says a coalition of seven Weste…

Mort Rosenblum: Will we leave any water for our grandchildren?
Columnists

Mort Rosenblum: Will we leave any water for our grandchildren?

  • Mort Rosenblum Special to the Arizona Daily Star
  • Updated Nov 29, 2025

For Star subscribers: We talk about spending billions on temporary water fixes and tradeoffs that only push the eventual showdown with nature down the road.

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