Reservoir · Kansas · United States · USACE CWMS
Webster Dam
13.7% full
Capacity
95.44 hm³
Volume stored
13 hm³
Vs month average
46% of normal
Coordinates
39.409°N, 99.425°W
Last updated
2026-10-28
Current fill
13.7%vs 7 days ago
-0.1 pplosing
vs 1 year ago
-1.4 ppyear-over-year
7-day trend
→stable
Drought context
Storage vs October average
46%of normal
13.7% full on 2026-10-28, against an average of 29.6% for October across 6 years of readings (-15.9 points).
Drought Monitor at this site · 27 October 2026
Nonenot in a drought category
Webster Dam's coordinates fall outside every category on the weekly U.S. Drought Monitor map. That describes local conditions — rainfall, soil moisture, streamflow — not the reservoir's storage. Kansas 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: 2026-10-28.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 39.409°N, 99.425°W · Open in Google Maps
About Webster Dam
As of October 28, 2026, Webster Dam is filled to 13.7% of its total capacity, holding 13.12 hm³ of water out of a maximum 95.44 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 pp), and it is 1.4 points below its level on the same date a year earlier.
Across the readings we hold for Webster Dam — 1820 data points between October 30, 2021 and October 28, 2026 — the level has ranged from a low of 9.7% (June 29, 2026) to a high of 91.6% (June 13, 2022). On average the reservoir is fullest around June and at its lowest around September.
It is operated by USACE primarily for multiple purposes. It is at 39.409°N, 99.425°W.
Key facts
- Current fill level
- 13.7% of total capacity
- Water stored
- 13.12 hm³
- Total capacity
- 95.44 hm³
- 7-day change
- ▼ 0.1 pp
- Year-on-year
- ▼ 1.4 pp
- Primary use
- Multipurpose
- Operator
- USACE
- Coordinates
- 39.409°N, 99.425°W
- Last updated
- October 28, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 28 Oct 2026 | 13.7% | 13.12 |
| 27 Oct 2026 | 13.7% | 13.12 |
| 26 Oct 2026 | 13.7% | 13.12 |
| 25 Oct 2026 | 13.7% | 13.12 |
| 24 Oct 2026 | 13.7% | 13.12 |
| 23 Oct 2026 | 13.8% | 13.14 |
| 22 Oct 2026 | 13.8% | 13.14 |
| 21 Oct 2026 | 13.8% | 13.14 |
| 20 Oct 2026 | 13.8% | 13.14 |
| 19 Oct 2026 | 13.8% | 13.14 |
| 18 Oct 2026 | 13.9% | 13.22 |
| 17 Oct 2026 | 13.9% | 13.24 |