Research Library

Mexico is in arrears delivering water from the Rio Grande River to the U.S. under an 80-year-old treaty. Drought, increased water demand, and lack of reliability are creating hardships on both sides. With the treaty terms coming up for renewal next year, now is the time to update the treaty and alleviate stresses on both countries.

In June 2023, the international boundary treaty governing the U.S.-Mexico border came under attack from Gov. Greg Abbott’s Operation Lonestar. In a new research paper, nonresident scholars Stephen Mumme and Regina M. Buono outline the treaty’s history and examine key issues — advising on merits of recent challenges and long-term implications for the binational relationship between the United States and Mexico.

As drought persists along the lower Colorado River, can the U.S. and Mexico cooperate to develop new water sources? Stephen Mumme and Aidan Lyde explore options ranging from wastewater reclamation to seawater desalination.

As climate change continues to alter the outlook for water abundance in the Rio Grande River Basin, what mechanisms currently exist and what additional mechanisms are needed if Mexico is to comply with the requirements of the 1944 Water Treaty? Nonresident scholar Stephen Mumme and co-author Oscar Ibáñez explain.

As the reality of protracted drought pervades the border region, the need for greater cooperation between the United States and Mexico on transboundary groundwater management is becoming more urgent, writes nonresident scholar Stephen Mumme.

This research paper profiles the current state of water management along the U.S.-Mexico border and examines the prospects for binational cooperation in confronting two main challenges — rising water demand and the persistent, long-term diminishment of the region's reliable riparian water supply.

Stephen Mumme, nonresident scholar at the Center for the United States and Mexico, explores the recent Rio Grande water war and its temporary resolution, arguing that the 1944 water treaty has once again proven resilient and adaptable to the challenges confronting both the United States and Mexico as they share their transboundary water resources.

A 1944 U.S.-Mexico water treaty still in effect is one of the world’s finest examples of binational cooperation in managing shared transboundary water resources. The author explains why, concluding that such an agreement could not be reached in today's political climate.