Lake Cypress Springs: 94.7% full as of 2026-08-11
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 | 2026-08-11 | 94.7 | 376.89 | 63,212 | 63,212 | 66,756 | 3,153 |
| Yesterday | 2026-08-10 | 94.8 | 376.91 | 63,275 | 63,275 | 66,756 | 3,154 |
| 2 days ago | 2026-08-09 | 94.9 | 376.94 | 63,370 | 63,370 | 66,756 | 3,156 |
| 1 week ago | 2026-08-04 | 95.4 | 377.05 | 63,718 | 63,718 | 66,756 | 3,164 |
| 1 month ago | 2026-07-11 | 97.4 | 377.45 | 64,989 | 64,989 | 66,756 | 3,192 |
| 3 months ago | 2026-05-11 | 97.3 | 377.44 | 64,957 | 64,957 | 66,756 | 3,191 |
| 6 months ago | 2026-02-11 | 96.9 | 377.35 | 64,670 | 64,670 | 66,756 | 3,185 |
| 1 year ago | 2025-08-11 | 98.0 | 377.58 | 65,404 | 65,404 | 66,756 | 3,201 |
*
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 | 2026-08-11 17:15 | 376.88 | 378.00 | -1.12 |
| 1 hour prior | 2026-08-11 16:15 | 376.89 | 378.00 | -1.11 |
| 2 hours prior | 2026-08-11 15:15 | 376.88 | 378.00 | -1.12 |
| 6 hours prior | 2026-08-11 11:15 | 376.90 | 378.00 | -1.10 |
| 12 hours prior | 2026-08-11 05:15 | 376.90 | 378.00 | -1.10 |
| 24 hours prior | 2026-08-10 17:15 | 376.91 | 378.00 | -1.09 |
| 48 hours prior | 2026-08-09 17:15 | 376.93 | 378.00 | -1.07 |
*
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
