State · United States · USGS · BOR · USACE · CDEC
Missouri
40.6% average fill
Measured
9
Data pending
2
Volume stored
4,526 hm³
Measured capacity
11,137 hm³
Critical
1
Low level
2
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Reservoirs
Sorted by capacityHarry S Truman Dam & Reservoir
lowUpdated 2026-06-11
Mark Twain Pool
lowUpdated 2026-05-27
Stockton Dam & Reservoir
Updated 2026-06-11
Wappapello Pool
criticalUpdated 2026-05-27
Pomme de Terre Dam & Reservoir
Updated 2026-06-11
Smithville Dam & Reservoir
Updated 2026-06-11
Long Branch Dam & Reservoir
Updated 2026-06-11
Longview Dam & Reservoir
Updated 2026-06-11
Blue Springs Dam & Reservoir
Updated 2026-06-11
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
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: Bagnell Dam (Lake of the Ozarks) (2.2 km³), ReReg Pool (0.0 km³).
Bagnell Dam (Lake of the Ozarks)
SourcingReReg Pool
SourcingAbout reservoirs in Missouri
As of June 11, 2026, the reservoirs we track across Missouri that report live levels hold roughly 4,526 hm³ of water — about 40.6% of their combined capacity. Taken together, Missouri's reservoirs are within their normal operating range.
Across the region, 1 reservoir is at critically low levels and 2 are low. Pomme de Terre Dam & Reservoir is the fullest at 105.0%, while Wappapello Pool is the lowest at 10.5%.
Over the most recent week on record, 1 reservoir rose across Missouri.
Storage figures for Missouri come from USGS · USACE · BOR · CDEC; the most recent reading is from June 11, 2026. Each reservoir below links to its own page with full history and seasonal context.
Missouri at a glance
- Reservoirs tracked
- 9
- Average fill
- 40.6%
- Water stored
- 4,526 hm³
- Combined capacity
- 11,137 hm³
- At critically low levels
- 1
- Fullest
- Pomme de Terre Dam & Reservoir (105.0%)
- Lowest
- Wappapello Pool (10.5%)
- Last updated
- June 11, 2026
Frequently asked questions
How full are reservoirs in Missouri right now?
As of June 11, 2026, the reservoirs tracked in Missouri that report live levels are 40.6% full overall, holding about 4,526 hm³ of water.
How many reservoirs are there in Missouri?
reservoirs.earth tracks 9 reservoirs in Missouri, with a combined storage capacity of 11,137 hm³.
Which reservoir in Missouri is the fullest?
Pomme de Terre Dam & Reservoir is currently the fullest reservoir in Missouri, at 105.0% of capacity.
Which reservoir in Missouri is the lowest?
Wappapello Pool is currently the lowest in Missouri, at 10.5% of capacity.
Where does the reservoir data for Missouri come from?
All storage figures for Missouri come from USGS · USACE · BOR · CDEC, an official source, last updated June 11, 2026.