John Hickenlooper has been quietly convening Colorado River Basin senators to discuss Western water woes

John Hickenlooper has been quietly convening fellow U.S. senators from six other Colorado River Basin states over the past year in an effort to assist in the increasingly frantic conservation negotiations around the parched and overtaxed waterway that some 40 million people in the Southwest rely upon.

Hickenlooper, a Democrat, sees the informal, bipartisan caucus as a way to mediate interstate disagreements over how the river should be managed — and who should have to use less of its water — in the hope of preventing federal intervention. While states’ governors may not meet on a regular basis, senators from across the river basin are frequently together in Washington, D.C.

“The idea here is that we’re looking at how to use more carrot and less stick,” he…