Here’s the release from the Bureau of Reclamation. Here’s an excerpt:
Minute 319 Bi-National Partnership
For decades, environmental and water supply concerns over the Colorado River have been the subjects of controversy, dispute, and litigation along the U.S.-Mexico border. After years of intense negotiation, a historic partnership agreement, “Minute 319,” has been touted as one of the most innovative negotiated agreements between nations to include environmental river flows. Signed in November 2012, Minute 319 provides the authority and framework under the 1944 Water Treaty to implement actions under consideration by multiple administrations dating back to the late 1990s. This implementing agreement was only possible with the partnership of the Colorado River Basin states, water users and environmental organizations in both countries, and it provides a unique example of cooperation for other basins worldwide.
More Colorado River Basin coverage here/a> and here.