Reservoir · Mississippi · United States · USACE CWMS
Stennis Lock and Dam
100.0% full
Capacity
242.69 hm³
Volume stored
243 hm³
Vs month average
100% of normal
Coordinates
33.518°N, 88.488°W
Last updated
2026-09-15
Current fill
100.0%vs 7 days ago
0.0%stable
vs 1 year ago
N/A7-day trend
→stable
Drought context
Storage vs September average
100%of normal
100.0% full on 2026-09-15, against an average of 100.0% for September across 2 years of readings (0.0 points).
Drought Monitor at this site · 13 October 2026
D2severe drought
The ground at Stennis Lock and Dam's coordinates falls inside the D2 area of the weekly U.S. Drought Monitor map. That describes local conditions — rainfall, soil moisture, streamflow — not the reservoir's storage. Mississippi drought figures →
Data source: USACE CWMS — US Army Corps of Engineers — daily reservoir storage volume. Design capacity is unavailable for this site, so fill % is estimated against the 5-year maximum storage and may overstate fullness. Last reading: 2026-09-15.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 33.518, -88.488 · Open in Google Maps
About Stennis Lock and Dam
As of September 15, 2026, Stennis Lock and Dam is filled to 100.0% of its total capacity, holding roughly 243 hm³ of water out of a maximum 243 hm³. At this level the reservoir is high.
Over the most recent week on record the fill level has held broadly steady (+0.0 pts).
Across the readings we hold for Stennis Lock and Dam — 56 data points between October 16, 2021 and September 15, 2026 — the level has ranged from a low of 100.0% (October 16, 2021) to a high of 100.0% (October 16, 2021).
It is operated by USACE primarily for multiple purposes. It lies within the Mississippi basin at 33.518°N, 88.488°W.
Key facts
- Current fill level
- 100.0%
- Water stored
- 243 hm³
- Total capacity
- 243 hm³
- 7-day change
- No change
- Primary use
- Multipurpose
- River basin
- Mississippi
- Operator
- USACE
- Coordinates
- 33.518°N, 88.488°W
- Last updated
- September 15, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 15 Sep 2026 | 100.0% | 243 |
| 14 Sep 2026 | 100.0% | 243 |
| 13 Sep 2026 | 100.0% | 243 |
| 7 Dec 2021 | 100.0% | 243 |
| 6 Dec 2021 | 100.0% | 243 |
| 5 Dec 2021 | 100.0% | 243 |
| 4 Dec 2021 | 100.0% | 243 |
| 3 Dec 2021 | 100.0% | 243 |
| 2 Dec 2021 | 100.0% | 243 |
| 1 Dec 2021 | 100.0% | 243 |
| 30 Nov 2021 | 100.0% | 243 |
| 29 Nov 2021 | 100.0% | 243 |