Lake Cypress Springs: 88.5% full as of 2026-10-18
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 | 2026-10-18 | 88.5 | 375.57 | 59,109 | 59,109 | 66,756 | 3,065 |
| Yesterday | 2026-10-17 | 88.6 | 375.59 | 59,170 | 59,170 | 66,756 | 3,066 |
| 2 days ago | 2026-10-16 | 88.9 | 375.65 | 59,355 | 59,355 | 66,756 | 3,070 |
| 1 week ago | 2026-10-11 | 89.2 | 375.72 | 59,570 | 59,570 | 66,756 | 3,075 |
| 1 month ago | 2026-09-18 | 90.6 | 376.02 | 60,495 | 60,495 | 66,756 | 3,095 |
| 3 months ago | 2026-07-18 | 97.5 | 377.48 | 65,085 | 65,085 | 66,756 | 3,194 |
| 6 months ago | 2026-04-18 | 96.7 | 377.32 | 64,574 | 64,574 | 66,756 | 3,183 |
| 1 year ago | 2025-10-18 | 96.0 | 377.16 | 64,066 | 64,066 | 66,756 | 3,171 |
*
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 | 2026-10-18 17:15 | 375.55 | 378.00 | -2.45 |
| 1 hour prior | 2026-10-18 16:15 | 375.56 | 378.00 | -2.44 |
| 2 hours prior | 2026-10-18 15:15 | 375.55 | 378.00 | -2.45 |
| 6 hours prior | 2026-10-18 11:15 | 375.57 | 378.00 | -2.43 |
| 12 hours prior | 2026-10-18 05:15 | 375.57 | 378.00 | -2.43 |
| 24 hours prior | 2026-10-17 17:15 | 375.59 | 378.00 | -2.41 |
| 48 hours prior | 2026-10-16 17:15 | 375.60 | 378.00 | -2.40 |
*
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
