Reservoir · Kansas · United States · USACE CWMS
Wilson Dam & Reservoir
82.4% full
Capacity
302.2 hm³
Volume stored
249 hm³
Coordinates
38.966°N, 98.496°W
Last updated
2026-07-30
Current fill
82.4%vs 7 days ago
+0.1%gaining
vs 1 year ago
+3.2%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: 2026-07-30.
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 July 30, 2026, Wilson Dam & Reservoir is filled to 82.4% of its total capacity, holding roughly 249 hm³ of water out of a maximum 302 hm³. At this level the reservoir is high.
Over the most recent week on record the fill level has held broadly steady (+0.1 pts), and it is 3.2 points above its level on the same date a year earlier.
Across the readings we hold for Wilson Dam & Reservoir — 328 data points between July 31, 2021 and July 30, 2026 — the level has ranged from a low of 77.2% (May 12, 2026) to a high of 99.4% (September 4, 2021). On average the reservoir is fullest around August 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
- 82.4%
- Water stored
- 249 hm³
- Total capacity
- 302 hm³
- 7-day change
- ▲ 0.1 pts
- Year-on-year
- ▲ 3.2 pts
- Primary use
- Multipurpose
- River basin
- Kansas
- Operator
- USACE
- Coordinates
- 38.966°N, 98.496°W
- Last updated
- July 30, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 30 Jul 2026 | 82.4% | 249 |
| 29 Jul 2026 | 82.3% | 249 |
| 28 Jul 2026 | 82.4% | 249 |
| 27 Jul 2026 | 82.5% | 249 |
| 26 Jul 2026 | 82.6% | 249 |
| 25 Jul 2026 | 82.6% | 249 |
| 24 Jul 2026 | 82.7% | 250 |
| 23 Jul 2026 | 82.6% | 249 |
| 22 Jul 2026 | 82.7% | 250 |
| 21 Jul 2026 | 82.8% | 250 |
| 20 Jul 2026 | 83.0% | 251 |
| 19 Jul 2026 | 83.0% | 251 |
Frequently asked questions
What is the current water level of Wilson Dam & Reservoir?
As of July 30, 2026, Wilson Dam & Reservoir is at 82.4% of its capacity, holding approximately 249 hm³ of water, according to USACE CWMS (US Army Corps of Engineers) data.
Is Wilson Dam & Reservoir reservoir full?
No. As of July 30, 2026, Wilson Dam & Reservoir is high at 82.4% of its capacity, so it is not full.
Is the water level at Wilson Dam & Reservoir rising or falling?
The level at Wilson Dam & Reservoir has been broadly stable over the latest week on record (+0.1 points).
How much water can Wilson Dam & Reservoir hold?
Wilson Dam & Reservoir has a total capacity of 302 hm³.
Where is Wilson Dam & Reservoir reservoir located?
Wilson Dam & Reservoir is located in Kansas, United States, within the Kansas basin (coordinates 38.966°N, 98.496°W).
What is Wilson Dam & Reservoir used for?
Wilson Dam & Reservoir is used primarily for multiple purposes, and is managed by USACE.