ALBUQUERQUE, N.M. (AP) - The U.S. Supreme Court has approved a settlement package aimed at regulating groundwater pumping along the Rio Grande, one of North America's longest rivers, thereby ensuring a reliable water supply from New Mexico to Texas. This marks a significant resolution to a prolonged dispute over the river's management.
In a ruling issued on Tuesday, the Supreme Court accepted the recommendation of a special master to proceed with agreements originally proposed last year by the states of New Mexico, Texas, and Colorado. The settlement is designed to mitigate excessive groundwater extraction along the diminishing river and involves retiring water rights from irrigated farmland in southern New Mexico. This initiative is presented by the involved states as a means to restore order to the complex water-sharing system between two extensive irrigation districts located in southern New Mexico and western Texas.
Researchers have raised alarms over the unsustainable utilization of the Rio Grande, which flows from Colorado to Mexico, jeopardizing water security for millions relying on this cross-border river basin. As climate change has led to hotter and drier conditions over the years, farmers in southern New Mexico have increasingly relied on groundwater for irrigation, particularly for crops like pecans and chile. This extensive groundwater pumping led Texas to file a lawsuit in 2013, arguing that it adversely affected water deliveries required by Texas.
While the Colorado River frequently garners attention due to its challenges, experts assert that the situation along the Rio Grande is equally critical. Reports indicate that sections of the river, as far north as Albuquerque, may once again run dry this year, marking a troubling trend as it would be the third occurrence in just five years.
Officials from the New Mexico Department of Justice and the state engineer's office did not immediately respond to inquiries regarding the court's decision. However, they have previously indicated that this agreement will allow for localized water conservation decisions and avert the potential financial implications of significant water shortfalls, which could amount to billion-dollar payouts.
The settlement includes a comprehensive accounting system to facilitate water sharing with Texas, allowing New Mexico to utilize credits and debits in response to varying drought and wet periods. Nonetheless, New Mexico could incur additional water-sharing responsibilities if delays in water deliveries occur over an extended period.
Under the terms of the settlement, New Mexico is tasked with reducing annual groundwater depletions by 18,200 acre-feet, equivalent to approximately 5.9 billion gallons (22.3 billion liters). Officials anticipate that most of the necessary reductions will result from purchasing water rights from willing sellers, which will lead to the retirement of more than 14 square miles (36 square kilometers) of farmland.
While further details concerning the execution and financial aspects of the settlement are still being finalized, leading water managers have emphasized the need for a collaborative approach among New Mexico lawmakers. Hannah Riseley-White, the director of the Interstate Stream Commission, underscored this sentiment in a March meeting, stating that collective action is essential to address the water challenges faced by the region.
She pointed to long-term fallowing programs, improved water conservation techniques, and more efficient irrigation systems as viable strategies to manage the ongoing water issue effectively.
