September 16, 2016--For the first time, U.S. and Mexico take stock of the underground water they share (High Country News)

An unknown number of aquifers dot the border along the U.S. and Mexico, groundwater both sides use for agriculture, irrigation, and cities. Likewise, how much border communities rely on them and the ways they are managed by either country remain largely unclear. For a decade, researchers have attempted to study these transboundary aquifers, but limited funding from the U.S.

August 15, 2016--Groundwater recharge in Upper Colorado River Basin may hold steady under climate change (USGS)

Future groundwater replenishment in the Upper Colorado River Basin may benefit from projected increases in future basin-wide precipitation under current climate projections, according to a recent study by the U.S. Geological Survey and Bureau of Reclamation. The Colorado River provides water for more than 35 million people in the United States and 3 million people in Mexico.

July 21, 2016--Groundwater discharge to Upper Colorado River Basin varies in response to drought (USGS)

The Colorado River and its tributaries provide water to more than 40 million people in seven states, irrigate more than 5.5 million acres of land, and support hydropower facilities. More than half of the total streamflow in the UCRB originates from groundwater.

June 26, 2016--After years of drought and overuse, the San Luis Valley aquifer refills (High Country News)

The San Luis Valley in southern Colorado is an 8,000-square-mile expanse of farmland speckled with potato, alfalfa, barley and quinoa fields between the San Juan and Sangre de Cristo mountain ranges. Only about 7 inches of rain fall each year in the San Luis Valley. But while farmers and ranchers can’t depend on moisture above ground, they make up the difference beneath it.

June 21, 2016--Study finds surprising source of Colorado River water supply (Cortez Journal)

Every spring, snow begins to melt throughout the Rocky Mountains, flowing down from high peaks and into the streams and rivers that form the mighty Colorado River Basin, sustaining entire cities and ecosystems from Wyoming to Arizona.

June 9, 2016--Stanford researchers calculate groundwater levels from satellite data (Stanford University)

Researchers from Stanford’s School of Earth, Energy & Environmental Sciences have used satellite data and a new computer algorithm to gauge groundwater levels in Colorado’s San Luis Valley agricultural basin. The technique, detailed in the June issue of the journal Water Resources Research, could lead to better models of groundwater flow.

June 7, 2016--USGS map reveals long-term changes in America’s groundwater quality (Circle of Blue)

Chloride and nitrate concentrations are rising and arsenic levels are holding steady or falling. Those are two of the conclusions from a U.S. Geological Survey assessment of changes in the nation’s groundwater quality in the last two decades.

May 10, 2016--Groundwater a huge factor in sustaining Colorado River flows (Summit Voice)

Resource managers grappling with the vexing question of how to allocate Colorado River water to the thirsty cities, ranches and farms of the Southwest have some new food for thought. A new U.S.

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