Lake Graham: 69.1% full as of 2026-08-24
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 | 2026-08-24 | 69.1 | 1,068.77 | 31,312 | 31,298 | 45,288 | 1,985 |
| Yesterday | 2026-08-23 | 69.3 | 1,068.81 | 31,392 | 31,378 | 45,288 | 1,988 |
| 2 days ago | 2026-08-22 | 69.4 | 1,068.84 | 31,451 | 31,437 | 45,288 | 1,990 |
| 1 week ago | 2026-08-17 | 70.4 | 1,069.06 | 31,891 | 31,877 | 45,288 | 2,008 |
| 1 month ago | 2026-07-24 | 74.3 | 1,069.92 | 33,648 | 33,634 | 45,288 | 2,081 |
| 3 months ago | 2026-05-24 | 77.8 | 1,070.67 | 35,236 | 35,222 | 45,288 | 2,147 |
| 6 months ago | 2026-02-24 | 77.2 | 1,070.55 | 34,979 | 34,965 | 45,288 | 2,138 |
| 1 year ago | 2025-08-24 | 90.8 | 1,073.28 | 41,147 | 41,133 | 45,288 | 2,326 |
*
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 | 2026-08-24 22:00 | 1,068.74 | 1,075.00 | -6.26 |
| 1 hour prior | 2026-08-24 21:00 | 1,068.74 | 1,075.00 | -6.26 |
| 2 hours prior | 2026-08-24 20:00 | 1,068.75 | 1,075.00 | -6.25 |
| 6 hours prior | 2026-08-24 16:00 | 1,068.75 | 1,075.00 | -6.25 |
| 12 hours prior | 2026-08-24 10:00 | 1,068.77 | 1,075.00 | -6.23 |
| 24 hours prior | 2026-08-23 22:00 | 1,068.79 | 1,075.00 | -6.21 |
| 48 hours prior | 2026-08-22 22:00 | 1,068.82 | 1,075.00 | -6.18 |
*
Data is provisional and subject to revision.
Additional Information
| Impoundment date | 1958-01-01 |
| Vertical datum | NGVD29 +1.3 |
| Dead pool elevation | 1,030.00 ft above NGVD29 +1.3 |
| Service spillway crest elevation | 1,076.30 ft above NGVD29 |
| Top of dam elevation | 1,093.30 ft above NGVD29 |
| Conservation pool elevation | 1,075.00 ft above NGVD29 +1.3 |
| Data download (CSV) | period of record, last one year, last 30 days |
| Data Source | USGS:08088400 |
| USGS Monitoring Location | USGS:08088400 |
Lake Location
