Cordell Hull Lake is managed by U.S. Army Corps of Engineers. Lake Insights displays its latest available elevation from Tennessee Valley Authority. Published reference elevations are listed below.
Lake Status
0.11 feet below full pool
−0.11 ft vs full pool
- 7-day trend
- Falling
- 7-day change
- Down 0.26 ft
- 30-day change
- Up 0.07 ft
- Last updated
- 11 hours ago
Cordell Hull Lake is currently 0.11 feet below full pool and has fallen slightly over the past week. Readings show continued drawdown relative to full pool, with levels trending lower over the past week.
Key Facts
Managing authority
Waterbody / project type
Official purposes
Full pool
Datum
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
- 258,000 acre-ft
- Max storage
- 310,900 acre-ft
- Surface area at normal pool
- 11,960 acres
- Drainage area
- 8,096 sq mi
- Spillway capacity (design)
- 175,000 cfs
- Dam structure
- Gravity · 93 ft high · completed 1973
- Hazard classification
- High
- Safety & inspection
- last inspection Jun 9, 2020 · EAP yes
National Inventory of Dams · matched record: Cordell Hull Lock and Dam (TN15901)
How this lake is operated
- Documented project purposes (National Inventory of Dams): Recreation, Hydroelectric, Navigation, Other, 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
- 504.00 ft
Published reference elevation. Not necessarily a fixed year-round target for every project.
Current data source
Managing authority: U.S. Army Corps of Engineers
Observation source used by Lake Insights: Tennessee Valley Authority
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 Tennessee Valley Authority, 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 Cordell Hull Lake
- Who manages Cordell Hull Lake?
- Cordell Hull Lake is managed by U.S. Army Corps of Engineers. Lake Insights reports published gauge readings; it does not operate the waterbody.
- What is full pool at Cordell Hull Lake?
- The published full-pool elevation for Cordell Hull Lake is 504.00 ft (NGVD29). Full pool is a published reference elevation — not a prediction of today’s level.
- Where does Lake Insights get the level reading for Cordell Hull Lake?
- Lake Insights displays the latest available elevation for Cordell Hull Lake from Tennessee Valley Authority. The managing authority (U.S. Army Corps of Engineers) may differ from the agency that publishes the observation used on this page.
- What datum is used for Cordell Hull Lake?
- Elevations for Cordell Hull Lake are referenced to NGVD29 (MSL).
- What are the documented purposes of Cordell Hull Lake?
- Documented purposes for Cordell Hull Lake (National Inventory of Dams): Recreation, Hydroelectric, Navigation, Other, Water Supply.