State · United States · USGS · BOR · USACE · CDEC
Mississippi
50.8% average fill
Measured
5
Data pending
4
Volume stored
1,389 hm³
Measured capacity
2,734 hm³
Critical
1
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Reservoirs
Sorted by capacityGrenada Lake
Updated 2026-09-11
Sardis Lake
Updated 2026-09-11
Enid Lake
Updated 2026-09-11
Arkabutla Lake
criticalUpdated 2026-09-11
Okatibbee Lake
Updated 2026-09-11
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
4 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: GV Montgomery Lock and Dam (0.0 km³), John Rankin Lock and Dam (0.0 km³), Jamie Whitten Lock and Dam (0.2 km³), Glover Wilkins Lock and Dam (0.0 km³).
About reservoirs in Mississippi
As of September 11, 2026, the reservoirs we track across Mississippi that report live levels hold roughly 1,389 hm³ of water — about 50.8% of their combined capacity. Taken together, Mississippi's reservoirs are within their normal operating range.
Across the region, 1 reservoir is at critically low levels. Okatibbee Lake is the fullest at 77.2%, while Arkabutla Lake is the lowest at 13.7%.
Over the most recent week on record, 1 reservoir rose and 2 reservoirs fell across Mississippi.
Storage figures for Mississippi come from USGS · USACE · BOR · CDEC; the most recent reading is from September 11, 2026. Each reservoir below links to its own page with full history and seasonal context.
Mississippi at a glance
- Reservoirs tracked
- 5
- Average fill
- 50.8%
- Water stored
- 1,389 hm³
- Combined capacity
- 2,734 hm³
- At critically low levels
- 1
- Fullest
- Okatibbee Lake (77.2%)
- Lowest
- Arkabutla Lake (13.7%)
- Last updated
- September 11, 2026