- New Mexico’s largest reservoir sat at 1.4 percent of capacity on July 28, 2026.
- Falling water has left the Marina del Sur boat ramp hazardous for launching.
- State Parks says Elephant Butte remains open, with caution urged on the water.
Wednesday, July 29, 2026 — Elephant Butte Reservoir, the largest reservoir in New Mexico, held a shockingly low volume of water on July 28, 2026. Figures from Water Data for Texas
put the lake at 1.4 percent full, with roughly 27,278 acre-feet in storage against a conservation capacity of about 1,960,900 acre-feet.
An acre-foot is the amount of water it takes to cover one acre of land, about the size of a football field, one foot deep. Measured that way, the reservoir was holding a tiny fraction of what it can store when full.
A steady slide through the summer.
The recent numbers show how fast the lake has shrunk. One week earlier, on July 21, 2026, it stood at 1.8 percent. A month before that, on June 28, 2026, it was at 4.1 percent. Three months earlier, in late April, it reached about 12.8 percent. A year ago, on July 28, 2025, the reservoir sat at 3.7 percent.
The water surface had dropped to roughly 4,275 feet above sea level, about 130 feet below the lake’s flood pool mark.
Why this lake matters.
Elephant Butte is governed by the Rio Grande Compact, an agreement signed in 1938 by Colorado, New Mexico and Texas and approved by the United States Congress. The compact divides the waters of the Rio Grande Basin among the three states. Water stored at Elephant Butte supplies irrigation for farms and, when available, part of the drinking water supply for El Paso, Texas.
Trouble at the boat ramp.
Low water has created real problems for people who want to get their boats on the lake. According to a park alert, launching at the Marina del Sur boat ramp had become hazardous because of sediment and debris left behind as the water pulled back. Four-wheel drive was strongly recommended and could soon be required. Park staff noted that all launching and retrieval takes place at the operator’s own risk, and that crews were working daily to clear the ramp as levels kept falling.
What the state is doing.
In a news release issued last week, on July 22, 2026, New Mexico State Parks said it was clearing exposed shoreline debris, adjusting boat ramp access and coordinating with federal partners as the reservoir dropped. The U.S. Bureau of Reclamation confirmed that water releases from the reservoir would continue through July 28, 2026, which exposed ground and debris normally hidden underwater.
The release placed the drop in a wider setting. “While current conditions are challenging, they reflect long-term natural cycles intensified by regional drought and climate change,” the department said.
To keep access open where possible, the State Parks Division brought a long-reach excavator to the Marina del Sur ramp to remove silt and debris as levels dropped. Cleared material is being set aside to dry, after which a contractor will separate debris from the silt. The debris will be disposed of off-site, and clean silt will be stored away from the lake for future park road repairs. Crews plan to keep removing exposed debris in busy areas through the summer and fall, and the division is working with an engineering firm and marine construction experts on both short-term fixes and possible long-term improvements.
Safety on the water.
State Parks urged boaters and other lake users to take extra care. That guidance included watching for soft or unstable shoreline zones, keeping an eye out for newly exposed debris, operating vessels with extreme caution, moving slowly in shallow or unfamiliar areas, watching for temporary signs and buoy changes, wearing life jackets, and keeping a safe distance from other vessels.
Still open for recreation.
Despite the low water, the park remained open and, according to State Parks, still had plenty to offer. Visitors could camp, hike, bike, view wildlife, and enjoy shoreline activities and paddle craft. The park also pointed to nearby communities including Truth or Consequences, Elephant Butte, Socorro and Hatch, and to the newly opened Brew Lab 101 brew dock for lakeside relaxation during the low-water stretch.
State officials also reported that no harmful algae blooms had been detected at the reservoir at that time, though the lake remained under a “watch” status. New Mexico State Parks said it would keep monitoring conditions, removing debris and maintaining facilities until water levels rise enough to support normal operations.
Image from New Mexico State Parks Notice: Exposed debris caused by receding water line at Marina del sur boat ramp
