Elephant Butte Reservoir is New Mexico’s largest lake. Its often-quoted area of roughly 36,000 acres describes a high reservoir level; the water can cover a much smaller area on a visit. Navajo, Caballo, Conchas and Ute are other major reservoirs. This guide compares published surface areas and explains how to check access. It is part of our New Mexico Lakes Database.
Before towing a boat: the State Parks update dated September 2, 2026 lists all Elephant Butte park ramps as closed because of low water. Hand launching small craft remains permitted in that update. Read the operator’s latest notice before travelling; a large area in a reference table does not guarantee a usable ramp.
- The largest lakes in New Mexico, ranked
- New Mexico lake size, at a glance
- Choose a lake for the trip you want
- Frequently asked questions
- What is the largest lake in New Mexico?
- What is the deepest lake in New Mexico?
- Does New Mexico have natural lakes?
- Is the biggest lake the best choice for boating right now?
The largest lakes in New Mexico, ranked
These seven major reservoirs are ordered by the published reference figures below. This is a selected comparison, not an inventory of every reservoir or a ranking of today’s water levels. Sources use different surveys and water elevations. Navajo’s figure includes its Colorado portion; surrounding park land is excluded.
| Reservoir | Acres | What the figure describes |
|---|---|---|
| Elephant Butte | 36,897 | Reclamation, March 2016: conservation pool at elevation 4,407 ft. |
| Navajo | 15,610 | Reclamation: reservoir when full, including the Colorado part. |
| Caballo | About 11,500 | Reclamation, March 2016: published recreation-area reference. |
| Conchas | 9,600 | Historical reservoir survey in the EPA archive: surface elevation 4,201 ft. |
| Ute | 8,200 | New Mexico Tourism: published reservoir surface area. |
| Heron | 5,950 | Reclamation RISE: reservoir description, not a daily reading. |
| Abiquiu | 5,200 | Recreation.gov: published recreation reference. |
Also compare El Vado, Brantley, Bluewater, Eagle Nest, Sumner, Santa Rosa and Cochiti. Their usefulness for a trip depends on access and activities as much as size. Red Bluff Reservoir is a border reservoir largely in Texas, so it is not included in this New Mexico-focused comparison.
New Mexico lake size, at a glance
Acres measure surface area; acre-feet measure stored water. A reservoir reported as a small percentage full has that percentage of its reference storage volume, not necessarily the same percentage of surface area. The shape of its basin matters. A dam’s structural height is also a different measurement from water depth.
A conservation pool, flood-storage maximum and daily water level should not be treated as the same thing. For example, the 36,897-acre Elephant Butte figure above belongs to a specified elevation in a 2016 document. Reclamation separately publishes daily Elephant Butte surface-area observations. Use the dated observation for current conditions and the table for scale.
Choose a lake for the trip you want
- Near Albuquerque: Cochiti is the closest major reservoir for a day trip, with no-wake boating and a designated swim beach in its western recreation area. See our Albuquerque lake guide for the entrances and alternatives.
- Quiet water in the north: Heron has a no-wake rule, but State Parks’ September 2 update lists its ramps as unusable. Check access before bringing a trailer.
- A larger boating trip: check individual ramps at Navajo, Caballo, Conchas or Ute in the State Parks lake-condition report. Different ramps at the same lake can have different status.
Elephant Butte and Caballo lie on the Rio Grande in southern New Mexico; Navajo is in the northwest; Conchas and Ute are farther east. Lake guides linked in the table cover each destination. For USACE-managed areas, consult the Corps recreation updates as well as any State Park notice.
Frequently asked questions
What is the largest lake in New Mexico?
Elephant Butte Reservoir on the Rio Grande near Truth or Consequences. Reclamation’s 2016 reference gives 36,897 acres at conservation-pool elevation. Its current area can be much smaller; use the dated water data and park notices when planning a visit.
What is the deepest lake in New Mexico?
Navajo Lake is the usual answer. Reclamation lists 388 feet of water at the dam when full; the dam itself is 402 feet high. Neither number is a measurement of today’s water depth.
Does New Mexico have natural lakes?
Yes. The large waters in this comparison are reservoirs, but New Mexico also has natural lakes, including the sinkhole lakes at Bottomless Lakes State Park. Reservoirs and natural lakes are different types of waterbody, not synonyms.
Is the biggest lake the best choice for boating right now?
Not necessarily. A closed or dry boat ramp can matter more than the lake’s usual size. Check the operator’s current ramp report for the specific launch you intend to use; an open park does not mean every ramp is open.
Related: see the deepest lakes in New Mexico, the best lakes in New Mexico, or head back to the New Mexico Lakes Database.
