Reservoir · Kansas · United States · USACE CWMS
Webster Dam
15.4% full
Capacity
95.44 hm³
Volume stored
15 hm³
Coordinates
39.409°N, 99.425°W
Last updated
2026-07-29
Current fill
15.4%vs 7 days ago
-0.1%losing
vs 1 year ago
+1.5%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: 2026-07-29.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 39.409, -99.425 · Open in Google Maps
About Webster Dam
As of July 29, 2026, Webster Dam is filled to 15.4% of its total capacity, holding roughly 15 hm³ of water out of a maximum 95 hm³. At this level the reservoir is critically low.
Over the most recent week on record the fill level has held broadly steady (-0.1 pts), and it is 1.5 points above its level on the same date a year earlier.
Across the readings we hold for Webster Dam — 1820 data points between July 31, 2021 and July 29, 2026 — the level has ranged from a low of 9.7% (June 29, 2026) to a high of 92.0% (July 31, 2021). On average the reservoir is fullest around August and at its lowest around July.
It is operated by USACE primarily for multiple purposes. It lies within the Kansas basin at 39.409°N, 99.425°W.
Key facts
- Current fill level
- 15.4%
- Water stored
- 15 hm³
- Total capacity
- 95 hm³
- 7-day change
- ▼ 0.1 pts
- Year-on-year
- ▲ 1.5 pts
- Primary use
- Multipurpose
- River basin
- Kansas
- Operator
- USACE
- Coordinates
- 39.409°N, 99.425°W
- Last updated
- July 29, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 29 Jul 2026 | 15.4% | 15 |
| 28 Jul 2026 | 15.5% | 15 |
| 27 Jul 2026 | 15.5% | 15 |
| 26 Jul 2026 | 15.5% | 15 |
| 25 Jul 2026 | 15.5% | 15 |
| 24 Jul 2026 | 15.5% | 15 |
| 23 Jul 2026 | 15.6% | 15 |
| 22 Jul 2026 | 15.6% | 15 |
| 21 Jul 2026 | 15.7% | 15 |
| 20 Jul 2026 | 15.7% | 15 |
| 19 Jul 2026 | 15.8% | 15 |
| 18 Jul 2026 | 15.8% | 15 |
Frequently asked questions
What is the current water level of Webster Dam?
As of July 29, 2026, Webster Dam is at 15.4% of its capacity, holding approximately 15 hm³ of water, according to USACE CWMS (US Army Corps of Engineers) data.
Is Webster Dam reservoir full?
No. As of July 29, 2026, Webster Dam is critically low at 15.4% of its capacity, so it is not full.
Is the water level at Webster Dam rising or falling?
The level at Webster Dam has been broadly stable over the latest week on record (-0.1 points).
How much water can Webster Dam hold?
Webster Dam has a total capacity of 95 hm³.
Where is Webster Dam reservoir located?
Webster Dam is located in Kansas, United States, within the Kansas basin (coordinates 39.409°N, 99.425°W).
What is Webster Dam used for?
Webster Dam is used primarily for multiple purposes, and is managed by USACE.