Reservoir · Kansas · United States · BOR RISE
Waconda Lake
Waconda Lake and Glen Elder Dam
79.1% full
Capacity
297.84 hm³
Volume stored
236 hm³
Coordinates
39.496°N, 98.313°W
Last updated
2026-09-09
Current fill
79.1%vs 7 days ago
-1.0%losing
vs 1 year ago
+14.0%year-over-year
7-day trend
→stable
Data source: BOR RISE — US Bureau of Reclamation — 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: 2026-09-09.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 39.496, -98.313 · Open in Google Maps
About Waconda Lake
As of September 9, 2026, Waconda Lake is filled to 79.1% of its total capacity, holding roughly 236 hm³ of water out of a maximum 298 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 (-1.0 pts), and it is 14.0 points above its level on the same date a year earlier.
Across the readings we hold for Waconda Lake — 1945 data points between September 12, 2021 and September 9, 2026 — the level has ranged from a low of 60.0% (October 27, 2024) to a high of 96.6% (June 10, 2022). On average the reservoir is fullest around June and at its lowest around November.
It is operated by BOR primarily for multiple purposes. It lies within the Kansas basin at 39.496°N, 98.313°W.
Key facts
- Current fill level
- 79.1%
- Water stored
- 236 hm³
- Total capacity
- 298 hm³
- 7-day change
- ▼ 1.0 pts
- Year-on-year
- ▲ 14.0 pts
- Primary use
- Multipurpose
- River basin
- Kansas
- Operator
- BOR
- Coordinates
- 39.496°N, 98.313°W
- Last updated
- September 9, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 9 Sep 2026 | 79.1% | 236 |
| 8 Sep 2026 | 79.3% | 236 |
| 7 Sep 2026 | 79.4% | 237 |
| 6 Sep 2026 | 79.6% | 237 |
| 5 Sep 2026 | 79.7% | 237 |
| 4 Sep 2026 | 79.8% | 238 |
| 3 Sep 2026 | 79.9% | 238 |
| 2 Sep 2026 | 80.1% | 239 |
| 1 Sep 2026 | 80.3% | 239 |
| 31 Aug 2026 | 80.4% | 239 |
| 30 Aug 2026 | 80.5% | 240 |
| 29 Aug 2026 | 80.7% | 240 |