Reservoir · Missouri · United States · USACE CWMS
Harry S Truman Dam & Reservoir
20.2% full
Capacity
6,416.57 hm³
Volume stored
1294 hm³
Vs month average
91% of normal
Coordinates
38.263°N, 93.405°W
Last updated
2026-10-29
Current fill
20.2%vs 7 days ago
-2.1 pplosing
vs 1 year ago
N/A7-day trend
↓falling
Drought context
Storage vs October average
91%of normal
20.2% full on 2026-10-29, against an average of 22.1% for October across 2 years of readings (-1.9 points).
Drought Monitor at this site · 27 October 2026
D1moderate drought
The ground at Harry S Truman Dam & Reservoir's coordinates falls inside the D1 area of the weekly U.S. Drought Monitor map. That describes local conditions — rainfall, soil moisture, streamflow — not the reservoir's storage. Missouri drought figures →
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: 2026-10-29.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 38.263°N, 93.405°W · Open in Google Maps
About Harry S Truman Dam & Reservoir
As of October 29, 2026, Harry S Truman Dam & Reservoir is filled to 20.2% of its total capacity, holding 1,294 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 fallen by 2.1 percentage points.
Across the readings we hold for Harry S Truman Dam & Reservoir — 330 data points between October 30, 2021 and October 29, 2026 — the level has ranged from a low of 20.2% (October 28, 2026) to a high of 39.5% (May 13, 2022). On average the reservoir is fullest around May and at its lowest around September.
It is operated by USACE primarily for multiple purposes. It is at 38.263°N, 93.405°W.
Key facts
- Current fill level
- 20.2% of total capacity
- Water stored
- 1,294 hm³
- Total capacity
- 6,417 hm³
- 7-day change
- ▼ 2.1 pp
- Primary use
- Multipurpose
- Operator
- USACE
- Coordinates
- 38.263°N, 93.405°W
- Last updated
- October 29, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 29 Oct 2026 | 20.2% | 1,294 |
| 28 Oct 2026 | 20.2% | 1,294 |
| 27 Oct 2026 | 22.3% | 1,431 |
| 26 Oct 2026 | 22.4% | 1,434 |
| 25 Oct 2026 | 22.4% | 1,435 |
| 24 Oct 2026 | 22.4% | 1,436 |
| 23 Oct 2026 | 22.3% | 1,430 |
| 22 Oct 2026 | 22.3% | 1,431 |
| 21 Oct 2026 | 22.3% | 1,429 |
| 20 Oct 2026 | 22.3% | 1,429 |
| 19 Oct 2026 | 22.3% | 1,432 |
| 18 Oct 2026 | 22.3% | 1,429 |