Reservoir · Minnesota · United States · USACE CWMS
Orwell Dam
105.0% full
Capacity
9.93 hm³
Volume stored
11 hm³
Coordinates
46.217°N, 96.178°W
Last updated
2026-09-11
Current fill
105.0%vs 7 days ago
+1.1%gaining
vs 1 year ago
N/A7-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: 2026-09-11.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 46.217, -96.178 · Open in Google Maps
About Orwell Dam
As of September 11, 2026, Orwell Dam is filled to 105.0% of its total capacity, holding roughly 11 hm³ of water out of a maximum 10 hm³. At this level the reservoir is effectively full.
Over the most recent week on record the fill level has held broadly steady (+1.1 pts).
Across the readings we hold for Orwell Dam — 100 data points between September 12, 2021 and September 11, 2026 — the level has ranged from a low of 101.8% (September 29, 2021) to a high of 105.0% (September 12, 2021).
It is operated by USACE primarily for multiple purposes. It lies within the Minnesota basin at 46.217°N, 96.178°W.
Key facts
- Current fill level
- 105.0%
- Water stored
- 11 hm³
- Total capacity
- 10 hm³
- 7-day change
- ▲ 1.1 pts
- Primary use
- Multipurpose
- River basin
- Minnesota
- Operator
- USACE
- Coordinates
- 46.217°N, 96.178°W
- Last updated
- September 11, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 11 Sep 2026 | 105.0% | 11 |
| 10 Sep 2026 | 105.0% | 11 |
| 9 Sep 2026 | 105.0% | 11 |
| 8 Sep 2026 | 105.0% | 11 |
| 7 Sep 2026 | 105.0% | 11 |
| 6 Sep 2026 | 104.5% | 10 |
| 5 Sep 2026 | 104.5% | 10 |
| 4 Sep 2026 | 103.9% | 10 |
| 3 Sep 2026 | 103.7% | 10 |
| 2 Sep 2026 | 104.1% | 10 |
| 1 Sep 2026 | 104.4% | 10 |
| 31 Aug 2026 | 104.3% | 10 |