Reservoir · North Dakota · United States · USACE CWMS
Dickinson Dam on the Heart R
71.9% full
Capacity
10.62 hm³
Volume stored
8 hm³
Coordinates
46.870°N, 102.827°W
Last updated
2026-07-29
Current fill
71.9%vs 7 days ago
-0.1%losing
vs 1 year ago
-10.5%year-over-year
7-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: 2026-07-29.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 46.870, -102.827 · Open in Google Maps
About Dickinson Dam on the Heart R
As of July 29, 2026, Dickinson Dam on the Heart R is filled to 71.9% of its total capacity, holding roughly 8 hm³ of water out of a maximum 11 hm³. At this level the reservoir is within its normal operating range.
Over the most recent week on record the fill level has held broadly steady (-0.1 pts), and it is 10.5 points below its level on the same date a year earlier.
Across the readings we hold for Dickinson Dam on the Heart R — 1811 data points between July 31, 2021 and July 29, 2026 — the level has ranged from a low of 46.2% (October 9, 2021) to a high of 105.0% (May 1, 2022). On average the reservoir is fullest around May and at its lowest around January.
It is operated by USACE primarily for multiple purposes. It lies within the North Dakota basin at 46.870°N, 102.827°W.
Key facts
- Current fill level
- 71.9%
- Water stored
- 8 hm³
- Total capacity
- 11 hm³
- 7-day change
- ▼ 0.1 pts
- Year-on-year
- ▼ 10.5 pts
- Primary use
- Multipurpose
- River basin
- North Dakota
- Operator
- USACE
- Coordinates
- 46.870°N, 102.827°W
- Last updated
- July 29, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 29 Jul 2026 | 71.9% | 8 |
| 28 Jul 2026 | 72.0% | 8 |
| 27 Jul 2026 | 72.3% | 8 |
| 26 Jul 2026 | 72.6% | 8 |
| 25 Jul 2026 | 72.9% | 8 |
| 24 Jul 2026 | 73.2% | 8 |
| 23 Jul 2026 | 73.3% | 8 |
| 22 Jul 2026 | 73.7% | 8 |
| 21 Jul 2026 | 73.8% | 8 |
| 20 Jul 2026 | 74.4% | 8 |
| 19 Jul 2026 | 74.7% | 8 |
| 18 Jul 2026 | 75.0% | 8 |
Frequently asked questions
What is the current water level of Dickinson Dam on the Heart R?
As of July 29, 2026, Dickinson Dam on the Heart R is at 71.9% of its capacity, holding approximately 8 hm³ of water, according to USACE CWMS (US Army Corps of Engineers) data.
Is Dickinson Dam on the Heart R reservoir full?
No. As of July 29, 2026, Dickinson Dam on the Heart R is within its normal operating range at 71.9% of its capacity, so it is not full.
Is the water level at Dickinson Dam on the Heart R rising or falling?
The level at Dickinson Dam on the Heart R has been broadly stable over the latest week on record (-0.1 points).
How much water can Dickinson Dam on the Heart R hold?
Dickinson Dam on the Heart R has a total capacity of 11 hm³.
Where is Dickinson Dam on the Heart R reservoir located?
Dickinson Dam on the Heart R is located in North Dakota, United States, within the North Dakota basin (coordinates 46.870°N, 102.827°W).
What is Dickinson Dam on the Heart R used for?
Dickinson Dam on the Heart R is used primarily for multiple purposes, and is managed by USACE.