Reservoir · North Dakota · United States · USACE CWMS
Jamestown Dam & Reservoir
28.0% full
Capacity
132.97 hm³
Volume stored
37 hm³
Coordinates
46.931°N, 98.709°W
Last updated
2026-06-11
Current fill
28.0%vs 7 days ago
+0.2%gaining
vs 1 year ago
-4.6%year-over-year
7-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: 2026-06-11.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 46.931, -98.709 · Open in Google Maps
About Jamestown Dam & Reservoir
As of June 11, 2026, Jamestown Dam & Reservoir is filled to 28.0% of its total capacity, holding roughly 37 hm³ of water out of a maximum 133 hm³. At this level the reservoir is low.
Over the most recent week on record the fill level has held broadly steady (+0.2 pts), and it is 4.6 points below its level on the same date a year earlier.
Across the readings we hold for Jamestown Dam & Reservoir — 1820 data points between June 13, 2021 and June 11, 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 lies within the North Dakota basin at 46.931°N, 98.709°W.
Key facts
- Current fill level
- 28.0%
- Water stored
- 37 hm³
- Total capacity
- 133 hm³
- 7-day change
- ▲ 0.2 pts
- Year-on-year
- ▼ 4.6 pts
- Primary use
- Multipurpose
- River basin
- North Dakota
- Operator
- USACE
- Coordinates
- 46.931°N, 98.709°W
- Last updated
- June 11, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 11 Jun 2026 | 28.0% | 37 |
| 10 Jun 2026 | 27.8% | 37 |
| 9 Jun 2026 | 28.0% | 37 |
| 8 Jun 2026 | 28.0% | 37 |
| 7 Jun 2026 | 28.0% | 37 |
| 6 Jun 2026 | 28.1% | 37 |
| 5 Jun 2026 | 28.0% | 37 |
| 4 Jun 2026 | 27.9% | 37 |
| 3 Jun 2026 | 27.8% | 37 |
| 2 Jun 2026 | 27.9% | 37 |
| 1 Jun 2026 | 27.9% | 37 |
| 31 May 2026 | 28.1% | 37 |
Frequently asked questions
What is the current water level of Jamestown Dam & Reservoir?
As of June 11, 2026, Jamestown Dam & Reservoir is at 28.0% of its capacity, holding approximately 37 hm³ of water, according to USACE CWMS (US Army Corps of Engineers) data.
Is Jamestown Dam & Reservoir reservoir full?
No. As of June 11, 2026, Jamestown Dam & Reservoir is low at 28.0% of its capacity, so it is not full.
Is the water level at Jamestown Dam & Reservoir rising or falling?
The level at Jamestown Dam & Reservoir has been broadly stable over the latest week on record (+0.2 points).
How much water can Jamestown Dam & Reservoir hold?
Jamestown Dam & Reservoir has a total capacity of 133 hm³.
Where is Jamestown Dam & Reservoir reservoir located?
Jamestown Dam & Reservoir is located in North Dakota, United States, within the North Dakota basin (coordinates 46.931°N, 98.709°W).
What is Jamestown Dam & Reservoir used for?
Jamestown Dam & Reservoir is used primarily for multiple purposes, and is managed by USACE.