Reservoir · North Dakota · United States · USACE CWMS
Jamestown Dam & Reservoir
24.9% full
Capacity
132.97 hm³
Volume stored
33 hm³
Vs month average
96% of normal
Coordinates
46.931°N, 98.709°W
Last updated
2026-10-29
Current fill
24.9%vs 7 days ago
-0.7 pplosing
vs 1 year ago
-1.4 ppyear-over-year
7-day trend
→stable
Drought context
Storage vs October average
96%of normal
24.9% full on 2026-10-29, against an average of 26.0% for October across 6 years of readings (-1.1 points).
Drought Monitor at this site · 27 October 2026
D1moderate drought
The ground at Jamestown Dam & Reservoir'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. North Dakota drought figures →
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: 2026-10-29.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 46.931°N, 98.709°W · Open in Google Maps
About Jamestown Dam & Reservoir
As of October 29, 2026, Jamestown Dam & Reservoir is filled to 24.9% of its total capacity, holding 33.17 hm³ of water out of a maximum 132.97 hm³. At this level the reservoir is low.
Over the most recent week on record the fill level has held broadly steady (-0.7 pp), and it is 1.4 points below its level on the same date a year earlier.
Across the readings we hold for Jamestown Dam & Reservoir — 1817 data points between October 30, 2021 and October 29, 2026 — the level has ranged from a low of 10.3% (January 25, 2022) to a high of 100.0% (May 21, 2023). On average the reservoir is fullest around May and at its lowest around December.
It is operated by USACE primarily for multiple purposes. It is at 46.931°N, 98.709°W.
Key facts
- Current fill level
- 24.9% of total capacity
- Water stored
- 33.17 hm³
- Total capacity
- 132.97 hm³
- 7-day change
- ▼ 0.7 pp
- Year-on-year
- ▼ 1.4 pp
- Primary use
- Multipurpose
- Operator
- USACE
- Coordinates
- 46.931°N, 98.709°W
- Last updated
- October 29, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 29 Oct 2026 | 24.9% | 33.17 |
| 28 Oct 2026 | 24.9% | 33.11 |
| 27 Oct 2026 | 25.1% | 33.32 |
| 26 Oct 2026 | 25.1% | 33.37 |
| 25 Oct 2026 | 25.2% | 33.49 |
| 24 Oct 2026 | 25.3% | 33.58 |
| 23 Oct 2026 | 25.5% | 33.89 |
| 22 Oct 2026 | 25.6% | 34.04 |
| 21 Oct 2026 | 25.7% | 34.2 |
| 20 Oct 2026 | 25.8% | 34.36 |
| 19 Oct 2026 | 26.1% | 34.64 |
| 18 Oct 2026 | 26.2% | 34.77 |