Reservoir · Georgia · United States · USACE CWMS
Allatoona Dam and Lake
104.5% full
Capacity
453.27 hm³
Volume stored
474 hm³
Coordinates
34.163°N, 84.728°W
Last updated
2026-07-30
Current fill
104.5%vs 7 days ago
-0.1%losing
vs 1 year ago
+2.5%year-over-year
7-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: 2026-07-30.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 34.163, -84.728 · Open in Google Maps
About Allatoona Dam and Lake
As of July 30, 2026, Allatoona Dam and Lake is filled to 104.5% of its total capacity, holding roughly 474 hm³ of water out of a maximum 453 hm³. At this level the reservoir is effectively full.
Over the most recent week on record the fill level has held broadly steady (-0.1 pts), and it is 2.5 points above its level on the same date a year earlier.
Across the readings we hold for Allatoona Dam and Lake — 120 data points between April 1, 2026 and July 30, 2026 — the level has ranged from a low of 84.2% (April 1, 2026) to a high of 105.0% (July 26, 2026).
It is operated by USACE primarily for multiple purposes. It lies within the Georgia basin at 34.163°N, 84.728°W.
Key facts
- Current fill level
- 104.5%
- Water stored
- 474 hm³
- Total capacity
- 453 hm³
- 7-day change
- ▼ 0.1 pts
- Year-on-year
- ▲ 2.5 pts
- Primary use
- Multipurpose
- River basin
- Georgia
- Operator
- USACE
- Coordinates
- 34.163°N, 84.728°W
- Last updated
- July 30, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 30 Jul 2026 | 104.5% | 474 |
| 29 Jul 2026 | 104.6% | 474 |
| 28 Jul 2026 | 105.0% | 476 |
| 27 Jul 2026 | 105.0% | 477 |
| 26 Jul 2026 | 105.0% | 476 |
| 25 Jul 2026 | 104.4% | 473 |
| 24 Jul 2026 | 102.6% | 465 |
| 23 Jul 2026 | 102.1% | 463 |
| 22 Jul 2026 | 102.8% | 466 |
| 21 Jul 2026 | 103.3% | 468 |
| 20 Jul 2026 | 103.5% | 469 |
| 19 Jul 2026 | 103.3% | 468 |
Frequently asked questions
What is the current water level of Allatoona Dam and Lake?
As of July 30, 2026, Allatoona Dam and Lake is at 104.5% of its capacity, holding approximately 474 hm³ of water, according to USACE CWMS (US Army Corps of Engineers) data.
Is Allatoona Dam and Lake reservoir full?
Allatoona Dam and Lake is essentially full, sitting at 104.5% of capacity as of July 30, 2026.
Is the water level at Allatoona Dam and Lake rising or falling?
The level at Allatoona Dam and Lake has been broadly stable over the latest week on record (-0.1 points).
How much water can Allatoona Dam and Lake hold?
Allatoona Dam and Lake has a total capacity of 453 hm³.
Where is Allatoona Dam and Lake reservoir located?
Allatoona Dam and Lake is located in Georgia, United States, within the Georgia basin (coordinates 34.163°N, 84.728°W).
What is Allatoona Dam and Lake used for?
Allatoona Dam and Lake is used primarily for multiple purposes, and is managed by USACE.