Reservoir · Tennessee · United States · USACE CWMS
Cordell Hull Lock and Dam
100.1% full
Capacity
318.24 hm³
Volume stored
319 hm³
Coordinates
36.291°N, 85.943°W
Last updated
2026-09-11
Current fill
100.1%vs 7 days ago
+2.1%gaining
vs 1 year ago
N/A7-day trend
↑rising
Data source: USACE CWMS — US Army Corps of Engineers — 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: 2026-09-11.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 36.291, -85.943 · Open in Google Maps
About Cordell Hull Lock and Dam
As of September 11, 2026, Cordell Hull Lock and Dam is filled to 100.1% of its total capacity, holding roughly 319 hm³ of water out of a maximum 318 hm³. At this level the reservoir is effectively full.
Over the most recent week on record the fill level has risen by 2.1 percentage points.
Across the readings we hold for Cordell Hull Lock and Dam — 328 data points between September 12, 2021 and September 11, 2026 — the level has ranged from a low of 79.9% (February 2, 2022) to a high of 103.1% (June 29, 2026). On average the reservoir is fullest around June and at its lowest around March.
It is operated by USACE primarily for multiple purposes. It lies within the Tennessee basin at 36.291°N, 85.943°W.
Key facts
- Current fill level
- 100.1%
- Water stored
- 319 hm³
- Total capacity
- 318 hm³
- 7-day change
- ▲ 2.1 pts
- Primary use
- Multipurpose
- River basin
- Tennessee
- Operator
- USACE
- Coordinates
- 36.291°N, 85.943°W
- Last updated
- September 11, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 11 Sep 2026 | 100.1% | 318 |
| 10 Sep 2026 | 98.2% | 313 |
| 9 Sep 2026 | 97.9% | 311 |
| 8 Sep 2026 | 98.9% | 315 |
| 7 Sep 2026 | 100.0% | 318 |
| 6 Sep 2026 | 102.0% | 325 |
| 5 Sep 2026 | 100.9% | 321 |
| 4 Sep 2026 | 98.0% | 312 |
| 3 Sep 2026 | 97.8% | 311 |
| 2 Sep 2026 | 96.1% | 306 |
| 1 Sep 2026 | 96.9% | 308 |
| 31 Aug 2026 | 100.1% | 318 |