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: Lake Ashtabula (0.1 km³), Homme Dam (0.0 km³).

Lake Ashtabula

Sourcing

Capacity: 86 hm³⏳ Pending

Homme Dam

Sourcing

Capacity: 4 hm³⏳ Pending

About reservoirs in North Dakota

As of September 17, 2026, the reservoirs we track across North Dakota that report live levels hold roughly 18,109 hm³ of water — about 75.4% of their combined capacity. Taken together, North Dakota's reservoirs are within their normal operating range.

Across the region, 3 are low. Lake Darling Dam is the fullest at 99.0%, while Pipestem Dam & Reservoir is the lowest at 25.6%.

Over the most recent week on record, 2 reservoirs fell across North Dakota.

Storage figures for North Dakota come from USGS · USACE · BOR · CDEC; the most recent reading is from September 17, 2026. Each reservoir below links to its own page with full history and seasonal context.

North Dakota at a glance

Reservoirs tracked: 11
Average fill: 75.4%
Water stored: 18,109 hm³
Combined capacity: 24,006 hm³
Fullest: Lake Darling Dam (99.0%)
Lowest: Pipestem Dam & Reservoir (25.6%)
Last updated: September 17, 2026

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