Reservoir · North Dakota · United States · USACE CWMS
Dickinson Dam on the Heart R
66.8% full
Capacity
10.62 hm³
Volume stored
7 hm³
Vs month average
89% of normal
Coordinates
46.870°N, 102.827°W
Last updated
2026-10-15
Current fill
66.8%vs 7 days ago
-0.1%losing
vs 1 year ago
-5.3%year-over-year
7-day trend
→stable
Drought context
Storage vs October average
89%of normal
66.8% full on 2026-10-15, against an average of 74.8% for October across 6 years of readings (-8.0 points).
Drought Monitor at this site · 13 October 2026
D1moderate drought
The ground at Dickinson Dam on the Heart R'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. Capacity is the design (normal full-pool) capacity from the US National Inventory of Dams (NID); fill % = current volume ÷ design capacity. Last reading: 2026-10-15.
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 October 15, 2026, Dickinson Dam on the Heart R is filled to 66.8% of its total capacity, holding roughly 7 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 5.3 points below its level on the same date a year earlier.
Across the readings we hold for Dickinson Dam on the Heart R — 1812 data points between October 16, 2021 and October 15, 2026 — the level has ranged from a low of 49.3% (October 16, 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
- 66.8%
- Water stored
- 7 hm³
- Total capacity
- 11 hm³
- 7-day change
- ▼ 0.1 pts
- Year-on-year
- ▼ 5.3 pts
- Primary use
- Multipurpose
- River basin
- North Dakota
- Operator
- USACE
- Coordinates
- 46.870°N, 102.827°W
- Last updated
- October 15, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 15 Oct 2026 | 66.8% | 7 |
| 14 Oct 2026 | 66.8% | 7 |
| 13 Oct 2026 | 66.9% | 7 |
| 12 Oct 2026 | 66.8% | 7 |
| 11 Oct 2026 | 66.4% | 7 |
| 10 Oct 2026 | 66.8% | 7 |
| 9 Oct 2026 | 66.9% | 7 |
| 8 Oct 2026 | 66.9% | 7 |
| 7 Oct 2026 | 67.0% | 7 |
| 6 Oct 2026 | 67.1% | 7 |
| 5 Oct 2026 | 67.1% | 7 |
| 4 Oct 2026 | 67.4% | 7 |