Reservoir · Kansas · United States · USACE CWMS
Wilson Dam & Reservoir
79.8% full
Capacity
302.2 hm³
Volume stored
241 hm³
Coordinates
38.966°N, 98.496°W
Last updated
2026-09-11
Current fill
79.8%vs 7 days ago
-0.4%losing
vs 1 year ago
N/A7-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: 2026-09-11.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 38.966, -98.496 · Open in Google Maps
About Wilson Dam & Reservoir
As of September 11, 2026, Wilson Dam & Reservoir is filled to 79.8% of its total capacity, holding roughly 241 hm³ of water out of a maximum 302 hm³. At this level the reservoir is within its normal operating range.
Over the most recent week on record the fill level has held broadly steady (-0.4 pts).
Across the readings we hold for Wilson Dam & Reservoir — 328 data points between September 12, 2021 and September 11, 2026 — the level has ranged from a low of 77.2% (May 14, 2026) to a high of 98.3% (September 12, 2021). On average the reservoir is fullest around April and at its lowest around May.
It is operated by USACE primarily for multiple purposes. It lies within the Kansas basin at 38.966°N, 98.496°W.
Key facts
- Current fill level
- 79.8%
- Water stored
- 241 hm³
- Total capacity
- 302 hm³
- 7-day change
- ▼ 0.4 pts
- Primary use
- Multipurpose
- River basin
- Kansas
- Operator
- USACE
- Coordinates
- 38.966°N, 98.496°W
- Last updated
- September 11, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 11 Sep 2026 | 79.8% | 241 |
| 10 Sep 2026 | 79.8% | 241 |
| 9 Sep 2026 | 79.8% | 241 |
| 8 Sep 2026 | 79.9% | 242 |
| 7 Sep 2026 | 80.0% | 242 |
| 6 Sep 2026 | 80.1% | 242 |
| 5 Sep 2026 | 80.1% | 242 |
| 4 Sep 2026 | 80.2% | 242 |
| 3 Sep 2026 | 80.3% | 243 |
| 2 Sep 2026 | 80.4% | 243 |
| 1 Sep 2026 | 80.5% | 243 |
| 31 Aug 2026 | 80.7% | 244 |