Reservoir · Tennessee · United States · USACE CWMS
Cordell Hull Lock and Dam
98.4% full
Capacity
318.24 hm³
Volume stored
313 hm³
Coordinates
36.291°N, 85.943°W
Last updated
2026-07-30
Current fill
98.4%vs 7 days ago
+1.6%gaining
vs 1 year ago
-2.4%year-over-year
7-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: 2026-07-30.
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 July 30, 2026, Cordell Hull Lock and Dam is filled to 98.4% of its total capacity, holding roughly 313 hm³ of water out of a maximum 318 hm³. At this level the reservoir is high.
Over the most recent week on record the fill level has risen by 1.6 percentage points, and it is 2.4 points below its level on the same date a year earlier.
Across the readings we hold for Cordell Hull Lock and Dam — 328 data points between July 31, 2021 and July 30, 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 February.
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
- 98.4%
- Water stored
- 313 hm³
- Total capacity
- 318 hm³
- 7-day change
- ▲ 1.6 pts
- Year-on-year
- ▼ 2.4 pts
- Primary use
- Multipurpose
- River basin
- Tennessee
- Operator
- USACE
- Coordinates
- 36.291°N, 85.943°W
- Last updated
- July 30, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 30 Jul 2026 | 98.4% | 313 |
| 29 Jul 2026 | 96.8% | 308 |
| 28 Jul 2026 | 96.2% | 306 |
| 27 Jul 2026 | 99.0% | 315 |
| 26 Jul 2026 | 101.8% | 324 |
| 25 Jul 2026 | 101.6% | 323 |
| 24 Jul 2026 | 98.6% | 314 |
| 23 Jul 2026 | 101.4% | 323 |
| 22 Jul 2026 | 102.1% | 325 |
| 21 Jul 2026 | 98.8% | 314 |
| 20 Jul 2026 | 99.1% | 315 |
| 19 Jul 2026 | 99.7% | 317 |
Frequently asked questions
What is the current water level of Cordell Hull Lock and Dam?
As of July 30, 2026, Cordell Hull Lock and Dam is at 98.4% of its capacity, holding approximately 313 hm³ of water, according to USACE CWMS (US Army Corps of Engineers) data.
Is Cordell Hull Lock and Dam reservoir full?
Cordell Hull Lock and Dam is essentially full, sitting at 98.4% of capacity as of July 30, 2026.
Is the water level at Cordell Hull Lock and Dam rising or falling?
The level at Cordell Hull Lock and Dam is rising — it gained 1.6 percentage points over the latest week on record.
How much water can Cordell Hull Lock and Dam hold?
Cordell Hull Lock and Dam has a total capacity of 318 hm³.
Where is Cordell Hull Lock and Dam reservoir located?
Cordell Hull Lock and Dam is located in Tennessee, United States, within the Tennessee basin (coordinates 36.291°N, 85.943°W).
What is Cordell Hull Lock and Dam used for?
Cordell Hull Lock and Dam is used primarily for multiple purposes, and is managed by USACE.