New Terrell City Lake: 24.7% full as of 2026-10-02
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 | 2026-10-02 | 24.7 | 493.52 | 2,130 | 2,119 | 8,583 | 362 |
| Yesterday | 2026-10-01 | 24.4 | 493.44 | 2,101 | 2,090 | 8,583 | 360 |
| 2 days ago | 2026-09-30 | 23.9 | 493.33 | 2,062 | 2,051 | 8,583 | 356 |
| 1 week ago | 2026-09-25 | 24.2 | 493.40 | 2,087 | 2,076 | 8,583 | 358 |
| 1 month ago | 2026-09-02 | 26.0 | 493.83 | 2,244 | 2,233 | 8,583 | 372 |
| 3 months ago | 2026-07-02 | 32.8 | 495.28 | 2,823 | 2,812 | 8,583 | 430 |
| 6 months ago | 2026-04-02 | 27.3 | 494.12 | 2,353 | 2,342 | 8,583 | 382 |
| 1 year ago | 2025-10-02 | 26.3 | 493.89 | 2,266 | 2,255 | 8,583 | 374 |
*
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 | 2026-10-02 16:30 | 493.50 | 504.00 | -10.50 |
| 1 hour prior | 2026-10-02 15:30 | 493.50 | 504.00 | -10.50 |
| 2 hours prior | 2026-10-02 14:30 | 493.52 | 504.00 | -10.48 |
| 6 hours prior | 2026-10-02 10:30 | 493.52 | 504.00 | -10.48 |
| 12 hours prior | 2026-10-02 04:30 | 493.54 | 504.00 | -10.46 |
| 24 hours prior | 2026-10-01 16:30 | 493.49 | 504.00 | -10.51 |
| 48 hours prior | 2026-09-30 16:30 | 493.32 | 504.00 | -10.68 |
*
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
