San Luis Rio Colorado I

In 2012, a water sharing agreement was reached between the U.S and Mexico that paved the way for restoring flows to the lower Colorado River and its delta. Through this agreement, there is an historic opportunity to restore water to the desiccated lower Colorado River Delta with the promise that restored flows may someday support thousands of acres of wetland and river habitat.

The new agreement provides a landmark opportunity for restoration of the delta ecosystem. BEF, working with Pronatura Noroeste, the Colorado River Delta Water Trust and National Geographic, is supporting a series of base flow restoration projects that restore over a billion gallons of water during the dry summer months to help restore native vegetation and habitat throughout the delta.

Many more investments from myriad other funders and partner organizations will be needed to achieve the long-term flow restoration goals in the delta. However, BEF and our partners in this project are incredibly proud to play an early and critical role in restoring water to this once great ecosystem. Restoring base flows to the delta is a critical first step, and as we succeed in enlisting support from additional businesses and corporations through BEF’s Water Restoration Certificate® program, we expect to make additional investments in restoring Colorado River flows through the delta.

* Project supports voluntary transactions to change, reduce or stop water use – either temporarily or permanently – to protect or restore water for environmental benefit

** This resource has been reviewed and found to meet the BEF Flow Program Certification Criteria for Evaluating Proposals to Secure Environmental Flows by the National Fish and Wildlife Foundation.


Sonora, Mexico (Colorado River Delta)

Start Up Date:


Project Benefits:

Groundwater Replenishment

Wildlife & Habitat Improvement

Project Type:

Flow Restoration Transaction *


Fully Funded

WRCs Generated:

Yes **

Project Partners

Pronatura Noroeste, Colorado River Delta Trust and National Geographic