New Terrell City Lake: 25.7% full as of 2026-09-05
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 | 2026-09-05 | 25.7 | 493.77 | 2,221 | 2,210 | 8,583 | 370 |
| 1 day prior | 2026-09-04 | 25.8 | 493.79 | 2,229 | 2,218 | 8,583 | 371 |
| 2 days prior | 2026-09-03 | 25.8 | 493.79 | 2,229 | 2,218 | 8,583 | 371 |
| 1 week prior | 2026-08-29 | 26.3 | 493.90 | 2,270 | 2,259 | 8,583 | 375 |
| 1 month prior | 2026-08-05 | 29.0 | 494.49 | 2,497 | 2,486 | 8,583 | 396 |
| 3 months prior | 2026-06-05 | 27.2 | 494.09 | 2,342 | 2,331 | 8,583 | 381 |
| 6 months prior | 2026-03-05 | 26.2 | 493.87 | 2,259 | 2,248 | 8,583 | 374 |
| 1 year prior | 2025-09-05 | 27.4 | 494.14 | 2,361 | 2,350 | 8,583 | 383 |
*
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 | 2026-09-05 23:30 | 493.77 | 504.00 | -10.23 |
| 1 hour prior | 2026-09-05 22:30 | 493.77 | 504.00 | -10.23 |
| 2 hours prior | 2026-09-05 21:30 | 493.75 | 504.00 | -10.25 |
| 6 hours prior | 2026-09-05 17:30 | 493.72 | 504.00 | -10.28 |
| 12 hours prior | 2026-09-05 11:30 | 493.75 | 504.00 | -10.25 |
| 24 hours prior | 2026-09-04 23:30 | 493.79 | 504.00 | -10.21 |
| 48 hours prior | 2026-09-03 23:30 | 493.81 | 504.00 | -10.19 |
*
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
