Lake Graham: 65.4% full as of 2026-10-04
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 | 2026-10-04 | 65.4 | 1,067.91 | 29,635 | 29,621 | 45,288 | 1,915 |
| Yesterday | 2026-10-03 | 65.4 | 1,067.92 | 29,654 | 29,640 | 45,288 | 1,916 |
| 2 days ago | 2026-10-02 | 65.5 | 1,067.93 | 29,673 | 29,659 | 45,288 | 1,917 |
| 1 week ago | 2026-09-27 | 64.6 | 1,067.71 | 29,253 | 29,239 | 45,288 | 1,899 |
| 1 month ago | 2026-09-04 | 67.5 | 1,068.41 | 30,603 | 30,589 | 45,288 | 1,956 |
| 3 months ago | 2026-07-04 | 76.4 | 1,070.37 | 34,596 | 34,582 | 45,288 | 2,125 |
| 6 months ago | 2026-04-04 | 76.5 | 1,070.39 | 34,638 | 34,624 | 45,288 | 2,126 |
| 1 year ago | 2025-10-04 | 85.5 | 1,072.25 | 38,756 | 38,742 | 45,288 | 2,255 |
*
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 | 2026-10-04 16:00 | 1,067.91 | 1,075.00 | -7.09 |
| 1 hour prior | 2026-10-04 15:00 | 1,067.91 | 1,075.00 | -7.09 |
| 2 hours prior | 2026-10-04 14:00 | 1,067.91 | 1,075.00 | -7.09 |
| 6 hours prior | 2026-10-04 10:00 | 1,067.91 | 1,075.00 | -7.09 |
| 12 hours prior | 2026-10-04 04:00 | 1,067.92 | 1,075.00 | -7.08 |
| 24 hours prior | 2026-10-03 16:00 | 1,067.92 | 1,075.00 | -7.08 |
| 48 hours prior | 2026-10-02 16:00 | 1,067.93 | 1,075.00 | -7.07 |
*
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
