Reservoir · Mississippi · United States · USACE CWMS
GV Montgomery Lock and Dam
104.1% full
Capacity
8.51 hm³
Volume stored
9 hm³
Coordinates
34.463°N, 88.365°W
Last updated
2026-09-15
Current fill
104.1%vs 7 days ago
0.0%stable
vs 1 year ago
N/A7-day trend
→stable
Data source: USACE CWMS — US Army Corps of Engineers — daily reservoir storage volume. Capacity is the design (normal full-pool) capacity from the US National Inventory of Dams (NID); fill % = current volume ÷ design capacity. 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. 34.463, -88.365 · Open in Google Maps
About GV Montgomery Lock and Dam
As of September 15, 2026, GV Montgomery Lock and Dam is filled to 104.1% of its total capacity, holding roughly 9 hm³ of water out of a maximum 9 hm³. At this level the reservoir is effectively full.
Over the most recent week on record the fill level has held broadly steady (+0.0 pts).
Across the readings we hold for GV Montgomery Lock and Dam — 56 data points between September 18, 2021 and September 15, 2026 — the level has ranged from a low of 99.3% (October 20, 2021) to a high of 105.0% (September 29, 2021).
It is operated by USACE primarily for multiple purposes. It lies within the Mississippi basin at 34.463°N, 88.365°W.
Key facts
- Current fill level
- 104.1%
- Water stored
- 9 hm³
- Total capacity
- 9 hm³
- 7-day change
- No change
- Primary use
- Multipurpose
- River basin
- Mississippi
- Operator
- USACE
- Coordinates
- 34.463°N, 88.365°W
- Last updated
- September 15, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 15 Sep 2026 | 104.1% | 9 |
| 14 Sep 2026 | 102.5% | 9 |
| 13 Sep 2026 | 105.0% | 9 |
| 9 Nov 2021 | 102.4% | 9 |
| 8 Nov 2021 | 102.4% | 9 |
| 7 Nov 2021 | 105.0% | 9 |
| 6 Nov 2021 | 105.0% | 9 |
| 5 Nov 2021 | 102.5% | 9 |
| 4 Nov 2021 | 101.4% | 9 |
| 3 Nov 2021 | 101.6% | 9 |
| 2 Nov 2021 | 105.0% | 9 |
| 1 Nov 2021 | 105.0% | 9 |