The seven U.S. states along the Colorado River — Wyoming, Colorado, Utah, New Mexico, Arizona, Nevada and California — are up against yet another deadline to curb their water use amid extreme drought. They have until Tuesday to agree on massive voluntary cuts or the Bureau of Reclamation, a Department of the Interior agency, has said it will impose cuts on them.

The basin states have called the federal government’s bluff before, but whatever happens next week, millions of westerners and their livelihoods will be affected.