Reservoir · Missouri · United States · USACE CWMS
Harry S Truman Dam & Reservoir
30.3% full
Capacity
6,416.57 hm³
Volume stored
1947 hm³
Coordinates
38.263°N, 93.405°W
Last updated
2026-06-11
Current fill
30.3%vs 7 days ago
-0.3%losing
vs 1 year ago
-2.7%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: 2026-06-11.
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 June 11, 2026, Harry S Truman Dam & Reservoir is filled to 30.3% of its total capacity, holding roughly 1,947 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 (-0.3 pts), and it is 2.7 points below its level on the same date a year earlier.
Across the readings we hold for Harry S Truman Dam & Reservoir — 329 data points between June 15, 2023 and June 11, 2026 — the level has ranged from a low of 8.8% (April 24, 2026) to a high of 94.9% (April 18, 2026). On average the reservoir is fullest around April and at its lowest around September.
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
- 30.3%
- Water stored
- 1,947 hm³
- Total capacity
- 6,417 hm³
- 7-day change
- ▼ 0.3 pts
- Year-on-year
- ▼ 2.7 pts
- Primary use
- Multipurpose
- River basin
- Missouri
- Operator
- USACE
- Coordinates
- 38.263°N, 93.405°W
- Last updated
- June 11, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 11 Jun 2026 | 30.3% | 1,947 |
| 10 Jun 2026 | 30.6% | 1,964 |
| 9 Jun 2026 | 30.6% | 1,963 |
| 8 Jun 2026 | 29.7% | 1,904 |
| 7 Jun 2026 | 29.7% | 1,903 |
| 6 Jun 2026 | 30.4% | 1,953 |
| 5 Jun 2026 | 30.8% | 1,976 |
| 4 Jun 2026 | 30.9% | 1,986 |
| 3 Jun 2026 | 31.2% | 2,005 |
| 2 Jun 2026 | 31.5% | 2,021 |
| 1 Jun 2026 | 94.7% | 6,078 |
| 31 May 2026 | 31.2% | 2,001 |
Frequently asked questions
What is the current water level of Harry S Truman Dam & Reservoir?
As of June 11, 2026, Harry S Truman Dam & Reservoir is at 30.3% of its capacity, holding approximately 1,947 hm³ of water, according to USACE CWMS (US Army Corps of Engineers) data.
Is Harry S Truman Dam & Reservoir reservoir full?
No. As of June 11, 2026, Harry S Truman Dam & Reservoir is low at 30.3% 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 (-0.3 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.