Lake Sumner Water Level
New Mexico · updated daily from the U.S. Bureau of Reclamation
36.18 ft
Lake Sumner is current reading available and steady (-0.04 ft in the last 7 days).
Change since yesterday: -0.04 ft
Reading as of 2026-08-15
Where Lake Sumner sits historically
Today's level compared with every reading in our 0.3-year record for this lake.
Since yesterday
-0.04 ft
7-day change
-0.04 ft
30-day change
-2.14 ft
1-year change
— ft
Last 30 days
Last 12 months
Lake Sumner records and averages
| Current level | 36.18 ft |
|---|---|
| Record high | 51.48 ft (2026-05-01) |
| Record low | 36.01 ft (2026-08-06) |
| Average of all readings | 43.58 ft |
| Data span | 0.3 years (121 readings) |
Frequently asked questions
Is Lake Sumner full right now?
As of 2026-08-15, Lake Sumner sits at 36.18 ft, which is current reading available.Over the past 30 days the level has fallen 2.14 ft.
What is the water level at Lake Sumner today?
The most recent reading is 36.18 ft (2026-08-15), sourced from the U.S. Bureau of Reclamation. Readings on this page refresh automatically as the agency publishes new data.
What is the highest Lake Sumner has ever been?
The highest level in our records is 51.48 ft on 2026-05-01. The lowest is 36.01 ft on 2026-08-06. Our record covers about 0.3 years of readings.
Why is Lake Sumner changing right now?
Reservoir levels move for four main reasons: rainfall and runoff into the basin, releases through the dam for downstream water supply, power generation or flood control, evaporation during hot months, and seasonal drawdown schedules set by the operating agency. Lake Sumner has fallen 2.14 ft over the past 30 days. For the operational reason on any given week, check the U.S. Bureau of Reclamation directly.
How much has Lake Sumner changed over the past year?
Year-over-year comparison is not available for this lake yet. The full-history chart above covers 0.3 years, with a record high of 51.48 ft and a record low of 36.01 ft.
Nearby lakes in New Mexico
Source: the U.S. Bureau of Reclamation. Readings are provisional and subject to revision by the publishing agency. All New Mexico lake levels.