Water Surges Into Navajo Reservoir

Executive Briefing

According to reporting by NASA Space & Missions, Rounds of heavy rain in the U.S. Southwest flooded rivers and rapidly raised New Mexico’s second-largest reservoir.

Detailed Factual Report

Rounds of heavy rain in the U.S. Southwest flooded rivers and rapidly raised New Mexico’s second-largest reservoir.

Back-to-back extreme rain events inundated the Four Corners region of the U.S. Southwest in late October and early November 2026. The storms alleviated short-term drought conditions in the Southwest but caused river levels to spike to record or near-record levels in places, triggering damaging floods.

One effect of the heavy rains detected by satellites was the rapid rise of water levels in Navajo Reservoir. The change is visible in the images above, acquired on September 20 (left) and November 7 (right) with the OLI (Operational Land Imager) on Landsat 9 . In that time, the lake in northern New Mexico and southern Colorado rose by nearly 60 feet (18 meters), according to data from the U.S. Army Corps of Engineers. (Note that the Bureau of Reclamation decreased releases from Navajo Dam on September 16 and 17.)

On November 7, the reservoir stood at its highest level since August 2019 and at 108 percent of the average capacity for that date. That contrasts with September 20, when it held just 60 percent of its average capacity. Due to snow drought across the West in winter 2025-26, the lake saw relatively little growth in the spring, when snowmelt often raises water levels.

Verified Data Points & Key Takeaways

Geographic Scope & Community Impact

Recommended Action & Safety Guidelines

Source & Verification Provenance

Information in this article was compiled directly from records provided by NASA Space & Missions. Access the primary source document at: https://science.nasa.gov/earth/earth-observatory/water-surges-into-navajo-reservoir/. Reporting and editorial review conducted by the USA NOW News Desk.