tldrdailynews.com logo
Tag

Colorado River

All articles tagged with #colorado river

Satellite images reveal Western snowpack at record lows after a scorching March
world16 days ago

Satellite images reveal Western snowpack at record lows after a scorching March

A record-warm March melted the western U.S. snowpack to historic lows, with California’s snowpack at just about 22% of average and Sierra Nevada snow cover dropping from 52% to 21% in a month. Colorado River Basin snowpack is at record lows, threatening summer water supplies for millions and potentially worsening drought and wildfire risk. NASA Worldview satellite imagery highlights the rapid melt, and climate scientists say human-caused warming is shifting snowmelt timing and intensifying heat waves, signaling more strain on water resources in the years ahead.

via CNN|
#climate-change#colorado-river#drought
Drought paradox: Colorado River plants siphon groundwater, trimming river flows
planet-earth23 days ago

Drought paradox: Colorado River plants siphon groundwater, trimming river flows

A Princeton-backed study finds that in hot, dry summers vegetation taps groundwater rather than soil moisture, maintaining high evapotranspiration and drawing water away from the Colorado River, thereby reducing basin flows even when snowmelt is abundant. This “drought paradox” suggests climate warming could worsen water shortages and requires revising water budgets and management for the Colorado River basin, impacting states like Arizona and California.

via Live Science|
#colorado-river#drought-paradox#evapotranspiration
Drought-Driven Deadlock: Colorado River Talks Miss Deadline
environment1 month ago

Drought-Driven Deadlock: Colorado River Talks Miss Deadline

Colorado River negotiators failed to meet the federal deadline to adopt new water-sharing guidelines, heightening the risk of federally imposed cutbacks and lawsuits as climate-driven drought strains supplies for about 40 million people. The stalemate pits Upper Basin states arguing that hydrology requires tighter, shared limits against Lower Basin partners seeking equitable reductions, with talks continuing and federal action looming to avert a courtroom fight.

via KJZZ|
#colorado-river#drought#environment
Earth's Hidden Weight Explains Why the Green River Seems to Flow Uphill
science2 months ago

Earth's Hidden Weight Explains Why the Green River Seems to Flow Uphill

A new study explains the Green River’s uphill illusion: a dense lithospheric root beneath the Uinta Mountains slowly sank into the mantle for millions of years, dragging the surface downward. When the root detached a few million years ago, the mountains rose again, leaving the river looking like it flows uphill while gravity remains unchanged.

via The Daily Beast|
#colorado-river#geology#green-river
Lithospheric Drip Redirected a River Across Utah's Uinta Mountains
science2 months ago

Lithospheric Drip Redirected a River Across Utah's Uinta Mountains

Geologists propose that a dense chunk at the base of the Uinta Mountains’ lithosphere ‘dripped’ into Earth’s mantle, temporarily pulling the range downward and allowing the Green River to cut perpendicularly across the mountains to join the Colorado River, forming the Canyon of Lodor. Seismic imaging reveals a ~200 km-deep, cold chunk and thinner crust beneath the range; after the drip broke free about 2–5 million years ago, the mountains rebounded, the canyon solidified, and the Green River became a Colorado River tributary, reshaping North America’s continental divide.

via ScienceAlert|
#colorado-river#geology#green-river
Ancient mantle drip let the Green River flow uphill through the Uintas
planet-earth2 months ago

Ancient mantle drip let the Green River flow uphill through the Uintas

Geologists propose that a deep mantle “lithospheric drip” under the Uinta Mountains lowered the range, allowing the Green River to carve an uphill route through the Uintas about 8 million years ago. The mountains later rebounded after the drip detached from the mantle around 2–5 million years ago, enabling the canyon and current river path (including the Canyon of Lodore) to form. The idea is supported by seismic-imaging data and landscape modeling, and is published in the Journal of Geophysical Research: Earth Surface.

via Live Science|
#colorado-river#geology#green-river
policy2 months ago

Trump-Era Colorado River Talks Put Western Water Policy to the Test

Interior Secretary Doug Burgum convened seven-state governors to press for a new Colorado River agreement as climate-driven drought shrinks flows for 40 million people and 5.5 million acres of farmland. Downstream Arizona, California and Nevada seek mandatory cuts, while upstream Colorado, Utah, New Mexico and Wyoming push for voluntary measures; no breakthrough emerged ahead of the Feb. 14 deadline, with a five-year interim deal floated as a pragmatic path forward. Looming is the end-of-year rule set and a risk that court battles could decide allocations if a key compact’s tripwire is crossed. Snowpack is grim this winter, threatening Lake Powell hydropower and downstream deliveries, and options include upstream releases or reduced releases to Lake Mead. Politically, the issue intersects with tensions between Trump, Newsom and Polis, complicating negotiations.

via Politico|
#climate-change#colorado-river#interior-department
Federal playbook outlines five paths to Colorado River scarcity
environment2 months ago

Federal playbook outlines five paths to Colorado River scarcity

The Interior Department published five potential future management options for the drought-stricken Colorado River, ranging from action as usual to scenarios that could trigger water cuts for California, Nevada, and Arizona; no preferred option is identified, and any plan requires agreement among the seven basin states, with deadlines such as Feb. 14 for an agreement and Oct. 1 for a final decision. Public comment is open through early March as Lake Powell and Lake Mead sit at roughly 27% and 33% capacity.

via KUNC|
#colorado-river#drought#environment
environment5 months ago

Stalemate in Colorado River Negotiations Sparks Urgent Water Rights Concerns

The Trump administration has largely avoided direct intervention in the escalating Colorado River water crisis, which threatens water supplies and hydropower for 40 million people due to climate change and drought, with negotiations among states ongoing and federal officials taking a cautious, incremental approach to avoid political conflicts and legal battles.

via Politico|
#colorado-river#drought#environment
Colorado River shortages persist into 2026, prompting water use cuts in Arizona, Nevada, and Mexico
environment7 months ago

Colorado River shortages persist into 2026, prompting water use cuts in Arizona, Nevada, and Mexico

The Colorado River faces severe drought conditions with declining reservoir levels, prompting urgent negotiations among seven U.S. states and Mexico over water sharing. Federal officials warn of potential federal intervention if states cannot reach a consensus by November, as climate change exacerbates water shortages, threatening the river's future and the water supply for millions.

via CalMatters|
#colorado-river#drought#environment