Lake levels
Nickajack Lake, TN
- water level
- 633.00 ft
- Condition
- Falling
- 7-day change
- -0.35 ft
- 30-day change
- -0.55 ft
- 1-year change
- -0.74 ft
Reading as of 2026-10-13 | the Tennessee Valley Authority
- Since yesterday
- -0.13 ft
- 7-day change
- -0.35 ft
- 30-day change
- -0.55 ft
- 1-year change
- -0.74 ft
- Record high
- 634.89 ft
In brief
Nickajack Lake stood at 633.00 feet on Oct 13, 2026.
Source: Tennessee Valley Authority
Last 30 days
Last 12 months
Records and averages
| Current level | 633.00 ft |
|---|---|
| Record high | 634.89 ft (2025-02-14) |
| Record low | 632.47 ft (2025-01-12) |
| Average of all readings | 633.62 ft |
| Data span | 1.8 years (651 readings) |
Level schematic
Frequently asked questions
Is Nickajack Lake full right now?
As of 2026-10-13, Nickajack Lake sits at 633.00 ft. Over the past 30 days the level has fallen 0.55 ft.
What is the water level at Nickajack Lake today?
The most recent reading at Nickajack Lake is 633.00 ft (2026-10-13), sourced from the Tennessee Valley Authority. Readings on this page refresh automatically as the agency publishes new data.
What is the highest Nickajack Lake has ever been?
The highest level for Nickajack Lake in our records is 634.89 ft on 2025-02-14. The lowest is 632.47 ft on 2025-01-12. Our record covers about 1.8 years of readings.
Why is Nickajack Lake low 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. Nickajack Lake has fallen 0.55 ft over the past 30 days. For the operational reason on any given week, check the Tennessee Valley Authority directly.
How much has Nickajack Lake changed over the past year?
Nickajack Lake is -0.74 ft compared with this date last year (633.00 ft today). The full-history chart above covers 1.8 years, with a record high of 634.89 ft and a record low of 632.47 ft.
Download and cite
Quote this reading
Nickajack Lake stood at 633.00 feet on Oct 13, 2026.
Download the full record
nickajack-lake-tn-water-level-history.csv
How to cite
MyWaterLevel, “Nickajack Lake water level, 2025 to 2026,” data from Tennessee Valley Authority, https://mywaterlevel.com/lake/tn/nickajack-lake/, accessed Oct 13, 2026.
Source: the Tennessee Valley Authority. All Tennessee lake levels. Readings are provisional and may be revised. About our data and methods.