Lake Graham: 66.3% full as of 2026-09-14
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 | 2026-09-14 | 66.3 | 1,068.13 | 30,058 | 30,044 | 45,288 | 1,934 |
| Yesterday | 2026-09-13 | 66.5 | 1,068.16 | 30,116 | 30,102 | 45,288 | 1,936 |
| 2 days ago | 2026-09-12 | 66.6 | 1,068.20 | 30,194 | 30,180 | 45,288 | 1,939 |
| 1 week ago | 2026-09-07 | 67.2 | 1,068.32 | 30,427 | 30,413 | 45,288 | 1,949 |
| 1 month ago | 2026-08-14 | 70.8 | 1,069.16 | 32,092 | 32,078 | 45,288 | 2,016 |
| 3 months ago | 2026-06-14 | 76.1 | 1,070.31 | 34,468 | 34,454 | 45,288 | 2,120 |
| 6 months ago | 2026-03-14 | 76.4 | 1,070.38 | 34,617 | 34,603 | 45,288 | 2,125 |
| 1 year ago | 2025-09-14 | 88.0 | 1,072.73 | 39,861 | 39,847 | 45,288 | 2,288 |
*
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 | 2026-09-14 13:00 | 1,068.12 | 1,075.00 | -6.88 |
| 1 hour prior | 2026-09-14 12:00 | 1,068.13 | 1,075.00 | -6.87 |
| 2 hours prior | 2026-09-14 11:00 | 1,068.13 | 1,075.00 | -6.87 |
| 6 hours prior | 2026-09-14 07:00 | 1,068.13 | 1,075.00 | -6.87 |
| 12 hours prior | 2026-09-14 01:00 | 1,068.14 | 1,075.00 | -6.86 |
| 24 hours prior | 2026-09-13 13:00 | 1,068.16 | 1,075.00 | -6.84 |
| 48 hours prior | 2026-09-12 13:00 | 1,068.20 | 1,075.00 | -6.80 |
*
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
