Reservoir · New Mexico · United States · USACE CWMS
Brantley Reservoir
90.0% full
Capacity
50.64 hm³
Volume stored
46 hm³
Vs month average
115% of normal
Coordinates
32.547°N, 104.379°W
Last updated
2026-10-20
Current fill
90.0%vs 7 days ago
-1.4%losing
vs 1 year ago
N/A7-day trend
→stable
Drought context
Storage vs October average
115%of normal
90.0% full on 2026-10-20, against an average of 78.3% for October across 2 years of readings (+11.7 points).
Drought Monitor at this site · 13 October 2026
D1moderate drought
The ground at Brantley Reservoir's coordinates falls inside the D1 area of the weekly U.S. Drought Monitor map. That describes local conditions — rainfall, soil moisture, streamflow — not the reservoir's storage. New Mexico drought figures →
Data source: USACE CWMS — US Army Corps of Engineers — daily reservoir storage volume. Capacity is the design (normal full-pool) capacity from the US National Inventory of Dams (NID); fill % = current volume ÷ design capacity. Last reading: 2026-10-20.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 32.547, -104.379 · Open in Google Maps
About Brantley Reservoir
As of October 20, 2026, Brantley Reservoir is filled to 90.0% of its total capacity, holding roughly 46 hm³ of water out of a maximum 51 hm³. At this level the reservoir is high.
Over the most recent week on record the fill level has held broadly steady (-1.4 pts).
Across the readings we hold for Brantley Reservoir — 99 data points between October 21, 2021 and October 20, 2026 — the level has ranged from a low of 26.4% (September 22, 2026) to a high of 91.8% (October 14, 2026).
It is operated by USACE primarily for multiple purposes. It lies within the New Mexico basin at 32.547°N, 104.379°W.
Key facts
- Current fill level
- 90.0%
- Water stored
- 46 hm³
- Total capacity
- 51 hm³
- 7-day change
- ▼ 1.4 pts
- Primary use
- Multipurpose
- River basin
- New Mexico
- Operator
- USACE
- Coordinates
- 32.547°N, 104.379°W
- Last updated
- October 20, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 20 Oct 2026 | 90.0% | 46 |
| 19 Oct 2026 | 89.8% | 45 |
| 18 Oct 2026 | 89.7% | 45 |
| 17 Oct 2026 | 90.0% | 46 |
| 16 Oct 2026 | 90.8% | 46 |
| 15 Oct 2026 | 91.6% | 46 |
| 14 Oct 2026 | 91.8% | 47 |
| 13 Oct 2026 | 91.4% | 46 |
| 12 Oct 2026 | 90.8% | 46 |
| 11 Oct 2026 | 89.9% | 46 |
| 10 Oct 2026 | 89.0% | 45 |
| 9 Oct 2026 | 88.0% | 45 |