State · United States · USGS · BOR · USACE · CDEC
North Dakota
77.5% average fill
Measured
5
Data pending
2
Volume stored
651 hm³
Measured capacity
839 hm³
Low level
1
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Reservoirs
Sorted by capacityAudubon Lake North Dakota
Updated 2026-08-01
Lake Tschida and Heart Butte Dam
Updated 2026-08-01
Lake Darling Dam
Updated 2026-08-03
Jamestown Dam and Reservoir
lowUpdated 2026-08-01
Edward Arthur Patterson Lake
Updated 2026-08-01
Storage from official US gauges (USGS, USACE, Bureau of Reclamation, CDEC). Fill % uses design capacity from the National Inventory of Dams where available; a few sites without a match fall back to the 5-year maximum.
Major reservoirs — data pending
2 major reservoirs — data sourcing in progress
Storage is monitored by the US Army Corps of Engineers (USACE CWMS), but the live feed is currently stale — we are working to restore it. Known capacities: Baldhill Dam at Lake Ashtabula (0.1 km³), Homme Dam (0.0 km³).
About reservoirs in North Dakota
As of August 3, 2026, the reservoirs we track across North Dakota that report live levels hold roughly 651 hm³ of water — about 77.5% of their combined capacity. Taken together, North Dakota's reservoirs are within their normal operating range.
Across the region, 1 is low. Lake Darling Dam is the fullest at 97.8%, while Jamestown Dam and Reservoir is the lowest at 28.7%.
Storage figures for North Dakota come from USGS · USACE · BOR · CDEC; the most recent reading is from August 3, 2026. Each reservoir below links to its own page with full history and seasonal context.
North Dakota at a glance
- Reservoirs tracked
- 5
- Average fill
- 77.5%
- Water stored
- 651 hm³
- Combined capacity
- 839 hm³
- Fullest
- Lake Darling Dam (97.8%)
- Lowest
- Jamestown Dam and Reservoir (28.7%)
- Last updated
- August 3, 2026
Frequently asked questions
How full are reservoirs in North Dakota right now?
As of August 3, 2026, the reservoirs tracked in North Dakota that report live levels are 77.5% full overall, holding about 651 hm³ of water.
How many reservoirs are there in North Dakota?
reservoirs.earth tracks 5 reservoirs in North Dakota, with a combined storage capacity of 839 hm³.
Which reservoir in North Dakota is the fullest?
Lake Darling Dam is currently the fullest reservoir in North Dakota, at 97.8% of capacity.
Which reservoir in North Dakota is the lowest?
Jamestown Dam and Reservoir is currently the lowest in North Dakota, at 28.7% of capacity.
Where does the reservoir data for North Dakota come from?
All storage figures for North Dakota come from USGS · USACE · BOR · CDEC, an official source, last updated August 3, 2026.