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Hydrology

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Arizona could get water from San Diego within 6 months
Subscriber

Arizona could get water from San Diego within 6 months

  • Tony Davis
  • Updated 20 hrs ago

For Star subscribers: A new agreement signed by federal officials and leaders of water agencies in Arizona, California and Nevada could eventually lead to the transfer of potentially large amounts of Colorado River water between states.

San Carlos Lake still closed after fish die-off
State

San Carlos Lake still closed after fish die-off

  • Sarah Henry and Christian Cervantes Arizona Republic
  • Updated Jun 12, 2026

San Carlos Lake remains closed to visitors after a major fish kill wiped out “approximately 100% of the fish population within the lake.”

Judge halts new Arizona groundwater-saving program
Government-politics

Judge halts new Arizona groundwater-saving program

  • Tony Davis
  • Updated Jun 12, 2026

Judge Scott Blaney's ruling Tuesday marked the second time in t wo months he has overturned efforts by the Arizona Department of Water Resources to 

Experts: A  dry winter could 'crash' the Colorado River
State

Experts: A dry winter could 'crash' the Colorado River

  • Brandon Loomis Arizona Republic
  • Updated 21 hrs ago

“Immediate steps must be taken to significantly reduce consumptive uses” in every state and in Mexico, a new Colorado River analysis says.

Online water-use tracker could help Arizona farmers use less on crops
State

Online water-use tracker could help Arizona farmers use less on crops

  • Clara Migoya Arizona Republic
  • Updated Jun 10, 2026

A professor at the University of Arizona's Maricopa Agricultural Center who led the research trials says a free online tool could help farmers track historical water use to coming water demand.

Something weird and worrying is happening with rain, study finds
Science

Something weird and worrying is happening with rain, study finds

  • Doyle Rice USA Today
  • Updated Jun 11, 2026

New research shows that though the world sees more rain overall, it's getting drier at the same time. How can that be?

Arizona opinion: No Arizona water, no Arizona fish and wildlife. It's that simple.
Columnists

Arizona opinion: No Arizona water, no Arizona fish and wildlife. It's that simple.

  • Jaclyn Corbin Special to the Arizona Daily Star
  • May 25, 2026

An Arizona conservation advocate says protecting the Colorado River and the state’s watersheds is critical to preserving hunting, fishing and outdoor traditions. The opinion piece urges lawmakers to support a proposed water protection fund as drought and declining river flows continue to threaten Arizona’s natural resources.

Tucson, Phoenix create water-sharing plan as Colorado River shrinks
Subscriber

Tucson, Phoenix create water-sharing plan as Colorado River shrinks

  • Tony Davis
  • Updated Jun 12, 2026

For Star subscribers: Tucson and Phoenix have a plan in which city with more water than it needs at the moment can share it.

Beale drilling two wells at Project Blue data center site
Environment

Beale drilling two wells at Project Blue data center site

  • Hannah Cree
  • Updated Jun 6, 2026

The Project Blue data center will use groundwater from two new wells being drilled on the property.

Groups seek $2 billion for Colorado River water conservation
Environment

Groups seek $2 billion for Colorado River water conservation

  • Tony Davis
  • Updated Jun 6, 2026

Nearly 75 groups and other entities representing a wide range of interests want Congress to pony up at least $2 billion to invest in water con…

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