People cross through the low waters of the Táchira River after the closure of a border bridge on February 27th, 2019, in Cúcuta, Colombia.
Hamilton City leads California in a new approach to managing rivers.
Dams have been linked to habitat degradation, worsened biodiversity, and negative changes in river ecology.
Regulators warnings that the Sites Reservoir may have to cut its stated water storage goals have thrown the future of the ambitious project into doubt.
Conflict over the Sacramento–San Joaquin Delta has played out over decades of back-and-forth between regulators and farmers.
Over 12 million gallons of untreated wastewater has flowed into California from Mexico since 2015.
A recent funding decision has put the ambitious water project on firmer financial ground, but California Water Fix must still clear numerous regulatory and legal hurdles.
In an audio slideshow, Zoe Sullivan examines the similarities in approach for the Mississippi Delta and the fabled city of Venice in dealing with floods and loss of natural wetlands.
Conservationists find themselves at the back of line in divvying up water from one of the world's most litigated rivers.