Reservoir · Minnesota · United States · USACE CWMS
Lake Winnibigoshish Dam
81.2% full
Capacity
1,039.55 hm³
Volume stored
844 hm³
Coordinates
47.430°N, 94.050°W
Last updated
2026-09-11
Current fill
81.2%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. Design capacity is unavailable for this site, so fill % is estimated against the 5-year maximum storage and may overstate fullness. 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. 47.430, -94.050 · Open in Google Maps
About Lake Winnibigoshish Dam
As of September 11, 2026, Lake Winnibigoshish Dam is filled to 81.2% of its total capacity, holding roughly 844 hm³ of water out of a maximum 1,040 hm³. At this level the reservoir is high.
Over the most recent week on record the fill level has held broadly steady (-0.4 pts).
Across the readings we hold for Lake Winnibigoshish Dam — 1369 data points between September 15, 2021 and September 11, 2026 — the level has ranged from a low of 72.5% (October 26, 2021) to a high of 100.0% (June 26, 2022). On average the reservoir is fullest around June and at its lowest around November.
It is operated by USACE primarily for multiple purposes. It lies within the Minnesota basin at 47.430°N, 94.050°W.
Key facts
- Current fill level
- 81.2%
- Water stored
- 844 hm³
- Total capacity
- 1,040 hm³
- 7-day change
- ▼ 0.4 pts
- Primary use
- Multipurpose
- River basin
- Minnesota
- Operator
- USACE
- Coordinates
- 47.430°N, 94.050°W
- Last updated
- September 11, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 11 Sep 2026 | 81.2% | 844 |
| 10 Sep 2026 | 81.3% | 845 |
| 9 Sep 2026 | 82.2% | 855 |
| 8 Sep 2026 | 81.7% | 850 |
| 7 Sep 2026 | 81.3% | 845 |
| 6 Sep 2026 | 81.4% | 846 |
| 5 Sep 2026 | 81.4% | 847 |
| 4 Sep 2026 | 81.6% | 849 |
| 3 Sep 2026 | 80.2% | 834 |
| 2 Sep 2026 | 80.5% | 837 |
| 1 Sep 2026 | 80.8% | 840 |
| 31 Aug 2026 | 80.7% | 839 |