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
2026-10-28
Current fill
105.0%vs 7 days ago
+0.8 ppgaining
vs 1 year ago
N/A7-day trend
→stable
Drought context
Drought Monitor at this site · 20 October 2026
D1moderate drought
The ground at Orwell Dam's coordinates falls inside the D1 area of the weekly U.S. Drought Monitor map. That describes local conditions — rainfall, soil moisture, streamflow — not the reservoir's storage. Minnesota 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. 46.217°N, 96.178°W · Open in Google Maps
About Orwell Dam
As of October 28, 2026, Orwell Dam has a published fill of 105.0%, holding 10.68 hm³. Total capacity is 9.93 hm³. At this level the reservoir is effectively full.
Over the most recent week on record the fill level has held broadly steady (+0.8 pp).
Across the readings we hold for Orwell Dam — 45 data points between November 4, 2021 and October 28, 2026 — the level has ranged from a low of 101.7% (November 23, 2021) to a high of 105.0% (October 22, 2026).
It is operated by USACE primarily for multiple purposes. It is at 46.217°N, 96.178°W.
Key facts
- Current fill level
- 105.0%
- Water stored
- 10.68 hm³
- Total capacity
- 9.93 hm³
- 7-day change
- ▲ 0.8 pp
- Primary use
- Multipurpose
- Operator
- USACE
- Coordinates
- 46.217°N, 96.178°W
- Last updated
- October 28, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 28 Oct 2026 | 105.0% | 10.68 |
| 27 Oct 2026 | 105.0% | 10.61 |
| 26 Oct 2026 | 105.0% | 10.58 |
| 25 Oct 2026 | 105.0% | 10.56 |
| 24 Oct 2026 | 105.0% | 10.54 |
| 23 Oct 2026 | 105.0% | 10.51 |
| 22 Oct 2026 | 105.0% | 10.46 |
| 21 Oct 2026 | 104.2% | 10.35 |
| 20 Oct 2026 | 103.7% | 10.3 |
| 19 Oct 2026 | 102.6% | 10.19 |
| 18 Oct 2026 | 103.7% | 10.3 |
| 13 Oct 2026 | 104.1% | 10.34 |