Lake Cypress Springs: 93.9% full as of 2026-08-17
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 | 2026-08-17 | 93.9 | 376.73 | 62,709 | 62,709 | 66,756 | 3,142 |
| Yesterday | 2026-08-16 | 94.1 | 376.76 | 62,803 | 62,803 | 66,756 | 3,144 |
| 2 days ago | 2026-08-15 | 94.2 | 376.78 | 62,866 | 62,866 | 66,756 | 3,145 |
| 1 week ago | 2026-08-10 | 94.8 | 376.91 | 63,275 | 63,275 | 66,756 | 3,154 |
| 1 month ago | 2026-07-17 | 97.5 | 377.49 | 65,116 | 65,116 | 66,756 | 3,195 |
| 3 months ago | 2026-05-17 | 97.1 | 377.39 | 64,797 | 64,797 | 66,756 | 3,188 |
| 6 months ago | 2026-02-17 | 97.6 | 377.50 | 65,148 | 65,148 | 66,756 | 3,195 |
| 1 year ago | 2025-08-17 | 97.7 | 377.52 | 65,212 | 65,212 | 66,756 | 3,197 |
*
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 | 2026-08-17 22:15 | 376.72 | 378.00 | -1.28 |
| 1 hour prior | 2026-08-17 21:15 | 376.72 | 378.00 | -1.28 |
| 2 hours prior | 2026-08-17 20:15 | 376.72 | 378.00 | -1.28 |
| 6 hours prior | 2026-08-17 16:15 | 376.72 | 378.00 | -1.28 |
| 12 hours prior | 2026-08-17 10:15 | 376.73 | 378.00 | -1.27 |
| 24 hours prior | 2026-08-16 22:15 | 376.74 | 378.00 | -1.26 |
| 48 hours prior | 2026-08-15 22:15 | 376.77 | 378.00 | -1.23 |
*
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
