Lake Cypress Springs: 89.6% full as of 2026-09-27
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 | 2026-09-27 | 89.6 | 375.79 | 59,785 | 59,785 | 66,756 | 3,080 |
| Yesterday | 2026-09-26 | 89.7 | 375.81 | 59,847 | 59,847 | 66,756 | 3,081 |
| 2 days ago | 2026-09-25 | 89.7 | 375.83 | 59,908 | 59,908 | 66,756 | 3,082 |
| 1 week ago | 2026-09-20 | 90.4 | 375.97 | 60,340 | 60,340 | 66,756 | 3,091 |
| 1 month ago | 2026-08-27 | 92.8 | 376.49 | 61,957 | 61,957 | 66,756 | 3,126 |
| 3 months ago | 2026-06-27 | 98.1 | 377.60 | 65,468 | 65,468 | 66,756 | 3,203 |
| 6 months ago | 2026-03-27 | 97.4 | 377.47 | 65,053 | 65,053 | 66,756 | 3,193 |
| 1 year ago | 2025-09-27 | 97.4 | 377.45 | 64,989 | 64,989 | 66,756 | 3,192 |
*
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 | 2026-09-27 16:15 | 375.78 | 378.00 | -2.22 |
| 1 hour prior | 2026-09-27 15:15 | 375.78 | 378.00 | -2.22 |
| 2 hours prior | 2026-09-27 14:15 | 375.78 | 378.00 | -2.22 |
| 6 hours prior | 2026-09-27 10:15 | 375.79 | 378.00 | -2.21 |
| 12 hours prior | 2026-09-27 04:15 | 375.79 | 378.00 | -2.21 |
| 24 hours prior | 2026-09-26 16:15 | 375.80 | 378.00 | -2.20 |
| 48 hours prior | 2026-09-25 16:15 | 375.82 | 378.00 | -2.18 |
*
Data is provisional and subject to revision.
Additional Information
| Impoundment date | 1971-01-01 |
| Vertical datum | NGVD29 |
| Dead pool elevation | 317.75 ft above NGVD29 |
| Service spillway crest elevation | 378.00 ft above NGVD29 |
| Emergency spillway crest elevation | 385.00 ft above NGVD29 |
| Top of dam elevation | 395.00 ft above NGVD29 |
| Conservation pool elevation | 378.00 ft above NGVD29 |
| Data download (CSV) | period of record, last one year, last 30 days |
Elevation-Area-Capacity Curves
2007-07-01 (source: TWDB)
: GIS Data
|
|
| Data Source | USGS:07344484 |
| USGS Monitoring Location | USGS:07344484 |
Lake Location
