Lake Cypress Springs: 91.9% full as of 2026-09-04
Historical Data
| Date | Percent Full |
Mean Water Level (ft) |
Reservoir Storage (acre-ft) |
Conservation Storage (acre-ft) |
Conservation Capacity (acre-ft) |
Surface Area (acres) |
|
|---|---|---|---|---|---|---|---|
| Most recent | 2026-09-04 | 91.9 | 376.30 | 61,364 | 61,364 | 66,756 | 3,113 |
| 1 day prior | 2026-09-03 | 92.0 | 376.32 | 61,426 | 61,426 | 66,756 | 3,114 |
| 2 days prior | 2026-09-02 | 92.1 | 376.34 | 61,489 | 61,489 | 66,756 | 3,116 |
| 1 week prior | 2026-08-28 | 92.7 | 376.47 | 61,894 | 61,894 | 66,756 | 3,124 |
| 1 month prior | 2026-08-04 | 95.4 | 377.05 | 63,718 | 63,718 | 66,756 | 3,164 |
| 3 months prior | 2026-06-04 | 97.8 | 377.54 | 65,276 | 65,276 | 66,756 | 3,198 |
| 6 months prior | 2026-03-04 | 97.4 | 377.47 | 65,053 | 65,053 | 66,756 | 3,193 |
| 1 year prior | 2025-09-04 | 98.6 | 377.72 | 65,853 | 65,853 | 66,756 | 3,212 |
*
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 | 2026-09-04 23:15 | 376.30 | 378.00 | -1.70 |
| 1 hour prior | 2026-09-04 22:15 | 376.28 | 378.00 | -1.72 |
| 2 hours prior | 2026-09-04 21:15 | 376.29 | 378.00 | -1.71 |
| 6 hours prior | 2026-09-04 17:15 | 376.29 | 378.00 | -1.71 |
| 12 hours prior | 2026-09-04 11:15 | 376.30 | 378.00 | -1.70 |
| 24 hours prior | 2026-09-03 23:15 | 376.30 | 378.00 | -1.70 |
| 48 hours prior | 2026-09-02 23:15 | 376.34 | 378.00 | -1.66 |
*
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
