State · United States · USGS · BOR · USACE · CDEC
Missouri
36.6% average fill
Measured
10
Volume stored
3,525 hm³
Measured capacity
9,625 hm³
Critical
1
Low level
1
Below month average
8 of 10
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Drought Monitor · 20 October 2026
Weekly map · area in each categoryDrought status
45.0%
of the area in drought (D1 or worse)
Worst category: D4 exceptional drought
down 3.8 points on the week
Severe or worse (D2+)
29.0%
Extreme or worse (D3+)
16.2%
DSCI
1580–500
People in drought
1.7 million
Reservoirs (reservoirs.earth)
36.6% full10 tracked
Reservoirs on drought ground
3 of 102 in D2 or worse
As of the 20 October 2026 U.S. Drought Monitor map, 45.0% of Missouri was in drought (D1 or worse), with 16.2% in extreme or exceptional drought (D3–D4). The 10 reservoirs we track in Missouri were 36.6% full on their latest readings. 3 of 10 tracked reservoir sites sit inside the drought area, 2 of them in severe drought (D2) or worse.
The Drought Monitor maps where conditions are dry this week — rainfall, soil moisture, streamflow — not how much water is stored. Reservoir storage lags it by months, so a region can be in drought with full reservoirs, or out of drought with empty ones. Source: droughtmonitor.unl.edu. The U.S. Drought Monitor is jointly produced by the National Drought Mitigation Center at the University of Nebraska-Lincoln, the United States Department of Agriculture, the National Oceanic and Atmospheric Administration and the National Aeronautics and Space Administration. Map courtesy of NDMC.
Reservoirs
Sorted by capacityHarry S Truman Dam & Reservoir
lowUpdated 2026-10-28· 100% of month avg· D1
Stockton Dam & Reservoir
Updated 2026-10-28· 99% of month avg· D2
Wappapello Pool
criticalUpdated 2026-10-28· 96% of month avg· D0
Mark Twain Pool
Updated 2026-10-28· 96% of month avg· D0
Pomme de Terre Dam & Reservoir
Updated 2026-10-28· 99% of month avg· D2
Smithville Dam & Reservoir
Updated 2026-10-28· 99% of month avg
Long Branch Dam & Reservoir
Updated 2026-10-28· 99% of month avg
Longview Dam & Reservoir
Updated 2026-10-28· 99% of month avg
Blue Springs Dam & Reservoir
Updated 2026-10-28· 101% of month avg
ReReg Pool
Updated 2026-10-28· 85% of month avg· D0
Storage from official US gauges (USGS, USACE, Bureau of Reclamation, CDEC) and, in Texas, the Texas Water Development Board. Fill % uses design capacity from the National Inventory of Dams where available; Water Data for Texas lakes use that board's conservation capacity; a few sites without a match fall back to the 5-year maximum. "% of month avg" compares the current fill with the reservoir’s own average for this calendar month over its readings on record. D0–D4 is the U.S. Drought Monitor category of the ground at the reservoir’s coordinates on the latest weekly map — local conditions, not storage.
About reservoirs in Missouri
As of October 28, 2026, the reservoirs we track across Missouri that report live levels hold roughly 3,525 hm³ of water — about 36.6% of their combined capacity. Taken together, Missouri's reservoirs are low.
Across the region, 1 reservoir is at critically low levels and 1 is low. Blue Springs Dam & Reservoir is the fullest at 101.9%, while Wappapello Pool is the lowest at 10.6%.
Over the most recent week on record, 3 reservoirs fell across Missouri.
Storage figures for Missouri come from USGS · USACE · BOR · CDEC; the most recent reading is from October 28, 2026. Each reservoir below links to its own page with full history and seasonal context.
Missouri at a glance
- Reservoirs tracked
- 10
- Average fill
- 36.6%
- Water stored
- 3,525 hm³
- Combined capacity
- 9,625 hm³
- At critically low levels
- 1
- Fullest
- Blue Springs Dam & Reservoir (101.9%)
- Lowest
- Wappapello Pool (10.6%)
- Last updated
- October 28, 2026