Reservoir · North Dakota · United States · USACE CWMS
Lake Darling Dam
100.5% full
Capacity
134.32 hm³
Volume stored
135 hm³
Coordinates
48.458°N, 101.584°W
Last updated
2026-09-11
Current fill
100.5%vs 7 days ago
+1.8%gaining
vs 1 year ago
+1.6%year-over-year
7-day trend
↑rising
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: 2026-09-11.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 48.458, -101.584 · Open in Google Maps
About Lake Darling Dam
As of September 11, 2026, Lake Darling Dam is filled to 100.5% of its total capacity, holding roughly 135 hm³ of water out of a maximum 134 hm³. At this level the reservoir is effectively full.
Over the most recent week on record the fill level has risen by 1.8 percentage points, and it is 1.6 points above its level on the same date a year earlier.
Across the readings we hold for Lake Darling Dam — 1356 data points between August 1, 2022 and September 11, 2026 — the level has ranged from a low of 2.8% (January 20, 2025) to a high of 105.0% (February 18, 2024). On average the reservoir is fullest around July and at its lowest around January.
It is operated by USACE primarily for multiple purposes. It lies within the North Dakota basin at 48.458°N, 101.584°W.
Key facts
- Current fill level
- 100.5%
- Water stored
- 135 hm³
- Total capacity
- 134 hm³
- 7-day change
- ▲ 1.8 pts
- Year-on-year
- ▲ 1.6 pts
- Primary use
- Multipurpose
- River basin
- North Dakota
- Operator
- USACE
- Coordinates
- 48.458°N, 101.584°W
- Last updated
- September 11, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 11 Sep 2026 | 100.5% | 135 |
| 10 Sep 2026 | 99.3% | 133 |
| 9 Sep 2026 | 100.4% | 135 |
| 8 Sep 2026 | 102.0% | 137 |
| 7 Sep 2026 | 98.8% | 133 |
| 6 Sep 2026 | 98.9% | 133 |
| 5 Sep 2026 | 98.0% | 132 |
| 4 Sep 2026 | 98.7% | 133 |
| 3 Sep 2026 | 99.2% | 133 |
| 2 Sep 2026 | 98.7% | 133 |
| 1 Sep 2026 | 99.3% | 133 |
| 31 Aug 2026 | 100.3% | 135 |