Douglas Lake is managed by Tennessee Valley Authority (TVA). Lake Insights displays its latest available elevation from NOAA / National Weather Service — Advanced Hydrologic Prediction Service. Published reference elevations are listed below.
Lake Status
14.07 feet below full pool
−14.07 ft vs full pool
- 7-day trend
- Falling
- 7-day change
- Down 3.23 ft
- 30-day change
- Down 10.15 ft
- Last updated
- 1 hour ago
Douglas Lake is currently 14.07 feet below full pool and has been falling over the past week. Readings show continued drawdown relative to full pool, with levels trending lower over the past week.
Watershed drought conditions
Jefferson County, TN · surrounding county from lake location
Abnormally Dry
The surrounding county is abnormally dry, which is not official drought.
Severity
Weekly trend
Worsening
Compared with last week
Official drought
No
Current conditions are classified as Abnormally Dry (D0), which is not considered official drought.
U.S. Drought Monitor · map date Sep 15, 2026. Updated weekly. droughtmonitor.unl.eduView drought map for Jefferson County, TN
Key Facts
Managing authority
Waterbody / project type
Official purposes
Full pool
Winter pool
Current-level source
Project / NID identifier
Dam / watershed (NID design values)
Static design values from a confidently matched National Inventory of Dams record — not live gage readings.
- Normal storage
- 1.22M acre-ft
- Max storage
- 1.63M acre-ft
- Surface area at normal pool
- 28,070 acres
- Drainage area
- 4,541 sq mi
- Spillway capacity (design)
- 422,000 cfs
- Dam structure
- Concrete · 202 ft high · completed 1943
- Hazard classification
- High
- Safety & inspection
- last inspection Feb 10, 2025
National Inventory of Dams · matched record: Douglas Dam (TN15501)
How this lake is operated
- Documented project purposes (National Inventory of Dams): Flood Risk Reduction, Hydroelectric, Navigation, Recreation, Water Supply.
Why the level can change
General factors for reservoirs like this
These are common influences for this type of lake. They do not identify the cause of a specific current change unless an operator update confirms it.
Rainfall & inflows
Rain and upstream river inflows can raise reservoir levels, especially after storms.
Downstream releases
When an operator releases water through a dam, reservoir storage can fall and downstream flows can rise.
Flood-risk operations
Some projects store or release water under flood-risk rules when conditions require it.
Water supply
Some reservoirs support municipal, industrial, irrigation, or regional water-supply needs.
Hydropower
Hydropower projects may pass water through turbines when generating electricity.
Seasonal weather
Dry periods, heat, evaporation, and seasonal rainfall patterns can affect storage over weeks and months.
Published reference elevations
- Full pool
- 993.00 ft
- Winter / seasonal pool
- 940.00 ft
Published reference elevation. Not necessarily a fixed year-round target for every project.
A winter / seasonal pool elevation is published, but Lake Insights does not have verified seasonal operating dates for this lake.
Current data source
Managing authority: Tennessee Valley Authority (TVA)
Observation source used by Lake Insights: NOAA / National Weather Service — Advanced Hydrologic Prediction Service
Who manages the lake and who publishes the reading Lake Insights displays can differ. Lake Insights does not invent a source label from the managing authority alone.
General education
Shared background — not lake-specific facts
Lake Insights aggregates water level information from authoritative public sources such as the U.S. Army Corps of Engineers, NOAA, TVA, Bureau of Reclamation, power utilities, and other official lake operators. We preserve historical observations, calculate trends, and present lake conditions in a consistent format. For NOAA / National Weather Service — Advanced Hydrologic Prediction Service, we link to the official source whenever it is available. Lake Insights does not predict future lake levels unless an official forecast has been published by the managing authority.
Common questions about Douglas Lake
- Who manages Douglas Lake?
- Douglas Lake is managed by Tennessee Valley Authority (TVA). Lake Insights reports published gauge readings; it does not operate the waterbody.
- What is full pool at Douglas Lake?
- The published full-pool elevation for Douglas Lake is 993.00 ft. Full pool is a published reference elevation — not a prediction of today’s level.
- Does Douglas Lake have a published winter pool?
- Douglas Lake has a published winter / seasonal pool elevation of 940.00 ft. Lake Insights does not currently have verified seasonal operating dates for this lake.
- Where does Lake Insights get the level reading for Douglas Lake?
- Lake Insights displays the latest available elevation for Douglas Lake from NOAA / National Weather Service — Advanced Hydrologic Prediction Service. The managing authority (Tennessee Valley Authority (TVA)) may differ from the agency that publishes the observation used on this page.
- What are the documented purposes of Douglas Lake?
- Documented purposes for Douglas Lake (National Inventory of Dams): Flood Risk Reduction, Hydroelectric, Navigation, Recreation, Water Supply.