Reservoir · Missouri · United States · USACE CWMS
Harry S Truman Dam & Reservoir
22.4% full
Capacity
6,416.57 hm³
Volume stored
1436 hm³
Coordinates
38.263°N, 93.405°W
Last updated
2026-07-31
Current fill
22.4%vs 7 days ago
0.0%stable
vs 1 year ago
-7.3%year-over-year
7-day trend
→stable
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: 2026-07-31.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 38.263, -93.405 · Open in Google Maps
About Harry S Truman Dam & Reservoir
As of July 31, 2026, Harry S Truman Dam & Reservoir is filled to 22.4% of its total capacity, holding roughly 1,436 hm³ of water out of a maximum 6,417 hm³. At this level the reservoir is low.
Over the most recent week on record the fill level has held broadly steady (+0.0 pts), and it is 7.3 points below its level on the same date a year earlier.
Across the readings we hold for Harry S Truman Dam & Reservoir — 328 data points between August 1, 2021 and July 31, 2026 — the level has ranged from a low of 20.9% (October 8, 2021) to a high of 36.3% (April 30, 2026). On average the reservoir is fullest around June and at its lowest around October.
It is operated by USACE primarily for multiple purposes. It lies within the Missouri basin at 38.263°N, 93.405°W.
Key facts
- Current fill level
- 22.4%
- Water stored
- 1,436 hm³
- Total capacity
- 6,417 hm³
- 7-day change
- No change
- Year-on-year
- ▼ 7.3 pts
- Primary use
- Multipurpose
- River basin
- Missouri
- Operator
- USACE
- Coordinates
- 38.263°N, 93.405°W
- Last updated
- July 31, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 31 Jul 2026 | 22.4% | 1,436 |
| 30 Jul 2026 | 22.4% | 1,434 |
| 29 Jul 2026 | 22.5% | 1,444 |
| 28 Jul 2026 | 22.8% | 1,463 |
| 27 Jul 2026 | 23.0% | 1,477 |
| 26 Jul 2026 | 23.3% | 1,492 |
| 25 Jul 2026 | 23.4% | 1,503 |
| 24 Jul 2026 | 23.5% | 1,509 |
| 23 Jul 2026 | 23.5% | 1,506 |
| 22 Jul 2026 | 23.5% | 1,507 |
| 21 Jul 2026 | 23.5% | 1,510 |
| 20 Jul 2026 | 23.7% | 1,523 |
Frequently asked questions
What is the current water level of Harry S Truman Dam & Reservoir?
As of July 31, 2026, Harry S Truman Dam & Reservoir is at 22.4% of its capacity, holding approximately 1,436 hm³ of water, according to USACE CWMS (US Army Corps of Engineers) data.
Is Harry S Truman Dam & Reservoir reservoir full?
No. As of July 31, 2026, Harry S Truman Dam & Reservoir is low at 22.4% of its capacity, so it is not full.
Is the water level at Harry S Truman Dam & Reservoir rising or falling?
The level at Harry S Truman Dam & Reservoir has been broadly stable over the latest week on record (0.0 points).
How much water can Harry S Truman Dam & Reservoir hold?
Harry S Truman Dam & Reservoir has a total capacity of 6,417 hm³.
Where is Harry S Truman Dam & Reservoir reservoir located?
Harry S Truman Dam & Reservoir is located in Missouri, United States, within the Missouri basin (coordinates 38.263°N, 93.405°W).
What is Harry S Truman Dam & Reservoir used for?
Harry S Truman Dam & Reservoir is used primarily for multiple purposes, and is managed by USACE.