Lake Athens: 98.0% full as of 2026-07-31
Historical Data
| Date | Percent Full |
Mean Water Level (ft) |
Reservoir Storage (acre-ft) |
Conservation Storage (acre-ft) |
Conservation Capacity (acre-ft) |
Surface Area (acres) |
|
|---|---|---|---|---|---|---|---|
| Today | 2026-07-31 | 98.0 | 439.68 | 28,957 | 28,916 | 29,503 | 1,768 |
| Yesterday | 2026-07-30 | 98.2 | 439.71 | 29,012 | 28,971 | 29,503 | 1,772 |
| 2 days ago | 2026-07-29 | 98.3 | 439.73 | 29,048 | 29,007 | 29,503 | 1,774 |
| 1 week ago | 2026-07-24 | 99.1 | 439.85 | 29,268 | 29,227 | 29,503 | 1,787 |
| 1 month ago | 2026-06-30 | 100.0 | 440.12 | 29,767 | 29,503 | 29,503 | - n.a. - |
| 3 months ago | 2026-04-30 | 100.0 | 440.32 | 30,143 | 29,503 | 29,503 | - n.a. - |
| 6 months ago | 2026-01-31 | 100.0 | 440.44 | 30,370 | 29,503 | 29,503 | - n.a. - |
| 1 year ago | 2025-07-31 | 100.0 | 440.08 | 29,693 | 29,503 | 29,503 | - n.a. - |
*
Percent Full is based on Conservation Storage and Conservation Capacity and doesn't account for storage in flood pool.
**
Values above, including today's are averaged conditions. For near real-time instantaneous water level, see table below or the interactive map viewer.
Most Recent Instantaneous Water Level
| Date/time |
Water Level (ft) |
Conservation Pool Elevation (ft) |
Height Above Conservation Pool (ft) |
|
|---|---|---|---|---|
| Most recent | 2026-07-31 14:30 | 439.68 | 440.00 | -0.32 |
| 1 hour prior | 2026-07-31 13:30 | 439.69 | 440.00 | -0.31 |
| 2 hours prior | 2026-07-31 12:30 | 439.68 | 440.00 | -0.32 |
| 6 hours prior | 2026-07-31 08:30 | 439.68 | 440.00 | -0.32 |
| 12 hours prior | 2026-07-31 02:30 | 439.69 | 440.00 | -0.31 |
| 24 hours prior | 2026-07-30 14:30 | 439.71 | 440.00 | -0.29 |
| 48 hours prior | 2026-07-29 14:30 | 439.73 | 440.00 | -0.27 |
*
Data is provisional and subject to revision.
Additional Information
| Impoundment date | 1963-01-01 |
| Vertical datum | NAVD88 |
| Dead pool elevation | 396.50 ft above NAVD88 |
| Service spillway crest elevation | 440.00 ft above NGVD29 |
| Emergency spillway crest elevation | 446.00 ft above NGVD29 |
| Top of dam elevation | 453.00 ft above NGVD29 |
| Conservation pool elevation | 440.00 ft above NAVD88 |
| Data download (CSV) | period of record, last one year, last 30 days |
Elevation-Area-Capacity Curves
1998-02-01 (source: TWDB)
: GIS Data
|
|
| Data Source | USGS:08031290 |
| USGS Monitoring Location | USGS:08031290 |
Lake Location
