New Terrell City Lake: 23.2% full as of 2026-11-12
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 | 2026-11-12 | 23.2 | 493.15 | 1,998 | 1,987 | 8,583 | 351 |
| Yesterday | 2026-11-11 | 23.2 | 493.16 | 2,002 | 1,991 | 8,583 | 351 |
| 2 days ago | 2026-11-10 | 23.2 | 493.16 | 2,002 | 1,991 | 8,583 | 351 |
| 1 week ago | 2026-11-05 | 23.4 | 493.20 | 2,016 | 2,005 | 8,583 | 352 |
| 1 month ago | 2026-10-12 | 24.4 | 493.46 | 2,108 | 2,097 | 8,583 | 360 |
| 3 months ago | 2026-08-12 | 28.3 | 494.34 | 2,438 | 2,427 | 8,583 | 390 |
| 6 months ago | 2026-05-12 | 27.9 | 494.26 | 2,407 | 2,396 | 8,583 | 387 |
| 1 year ago | 2025-11-12 | 24.8 | 493.54 | 2,137 | 2,126 | 8,583 | 363 |
*
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 | 2026-11-12 07:45 | 493.15 | 504.00 | -10.85 |
| 1 hour prior | 2026-11-12 06:45 | 493.15 | 504.00 | -10.85 |
| 2 hours prior | 2026-11-12 05:45 | 493.15 | 504.00 | -10.85 |
| 6 hours prior | 2026-11-12 01:45 | 493.15 | 504.00 | -10.85 |
| 12 hours prior | 2026-11-11 19:45 | 493.15 | 504.00 | -10.85 |
| 24 hours prior | 2026-11-11 07:45 | 493.15 | 504.00 | -10.85 |
| 48 hours prior | 2026-11-10 07:45 | 493.16 | 504.00 | -10.84 |
*
Data is provisional and subject to revision.
Additional Information
| Impoundment date | 1955-01-01 |
| Vertical datum | NGVD29 |
| Dead pool elevation | 481.00 ft above NGVD29 |
| Service spillway crest elevation | 508.80 ft above NGVD29 |
| Emergency spillway crest elevation | 509.80 ft above NGVD29 |
| Top of dam elevation | 514.20 ft above NGVD29 |
|
Conservation pool elevation |
504.00 ft above NGVD29 |
|
Conservation pool elevation |
504.00 ft above NGVD29 |
| Data download (CSV) | period of record, last one year, last 30 days |
Elevation-Area-Capacity Curves
1997-05-01 (source: TWDB)
: GIS Data
|
|
| Data Source | USGS:08062730 |
| USGS Monitoring Location | USGS:08062730 |
Lake Location
