Reservoir · New Mexico · United States · BOR RISE
Lake Sumner and Dam
16.4% full
Capacity
78.56 hm³
Volume stored
13 hm³
Coordinates
34.629°N, 104.392°W
Last updated
2026-06-10
Current fill
16.4%vs 7 days ago
+0.1%gaining
vs 1 year ago
-15.2%year-over-year
7-day trend
→stable
Data source: BOR RISE — US Bureau of Reclamation — 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: 2026-06-10.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 34.629, -104.392 · Open in Google Maps
About Lake Sumner and Dam
As of June 10, 2026, Lake Sumner and Dam is filled to 16.4% of its total capacity, holding roughly 13 hm³ of water out of a maximum 79 hm³. At this level the reservoir is critically low.
Over the most recent week on record the fill level has held broadly steady (+0.1 pts), and it is 15.2 points below its level on the same date a year earlier.
Across the readings we hold for Lake Sumner and Dam — 1824 data points between June 13, 2021 and June 10, 2026 — the level has ranged from a low of 5.0% (August 8, 2022) to a high of 44.1% (June 8, 2023). On average the reservoir is fullest around February and at its lowest around October.
It is operated by BOR primarily for multiple purposes. It lies within the New Mexico basin at 34.629°N, 104.392°W.
Key facts
- Current fill level
- 16.4%
- Water stored
- 13 hm³
- Total capacity
- 79 hm³
- 7-day change
- ▲ 0.1 pts
- Year-on-year
- ▼ 15.2 pts
- Primary use
- Multipurpose
- River basin
- New Mexico
- Operator
- BOR
- Coordinates
- 34.629°N, 104.392°W
- Last updated
- June 10, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 10 Jun 2026 | 16.4% | 13 |
| 9 Jun 2026 | 16.3% | 13 |
| 8 Jun 2026 | 16.4% | 13 |
| 7 Jun 2026 | 16.5% | 13 |
| 6 Jun 2026 | 16.5% | 13 |
| 5 Jun 2026 | 16.5% | 13 |
| 4 Jun 2026 | 16.5% | 13 |
| 3 Jun 2026 | 16.4% | 13 |
| 2 Jun 2026 | 16.3% | 13 |
| 1 Jun 2026 | 16.4% | 13 |
| 31 May 2026 | 16.4% | 13 |
| 30 May 2026 | 16.5% | 13 |
Frequently asked questions
What is the current water level of Lake Sumner and Dam?
As of June 10, 2026, Lake Sumner and Dam is at 16.4% of its capacity, holding approximately 13 hm³ of water, according to BOR RISE (US Bureau of Reclamation) data.
Is Lake Sumner and Dam reservoir full?
No. As of June 10, 2026, Lake Sumner and Dam is critically low at 16.4% of its capacity, so it is not full.
Is the water level at Lake Sumner and Dam rising or falling?
The level at Lake Sumner and Dam has been broadly stable over the latest week on record (+0.1 points).
How much water can Lake Sumner and Dam hold?
Lake Sumner and Dam has a total capacity of 79 hm³.
Where is Lake Sumner and Dam reservoir located?
Lake Sumner and Dam is located in New Mexico, United States, within the New Mexico basin (coordinates 34.629°N, 104.392°W).
What is Lake Sumner and Dam used for?
Lake Sumner and Dam is used primarily for multiple purposes, and is managed by BOR.