Grapevine Lake: 92.1% full as of 2026-09-13
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 | 2026-09-13 | 92.1 | 532.99 | 150,263 | 150,263 | 163,064 | 6,172 |
| Yesterday | 2026-09-12 | 92.3 | 533.04 | 150,572 | 150,572 | 163,064 | 6,181 |
| 2 days ago | 2026-09-11 | 92.7 | 533.13 | 151,129 | 151,129 | 163,064 | 6,197 |
| 1 week ago | 2026-09-06 | 93.4 | 533.32 | 152,310 | 152,310 | 163,064 | 6,230 |
| 1 month ago | 2026-08-13 | 97.3 | 534.32 | 158,636 | 158,636 | 163,064 | 6,429 |
| 3 months ago | 2026-06-13 | 100.0 | 536.35 | 172,192 | 163,064 | 163,064 | - n.a. - |
| 6 months ago | 2026-03-13 | 100.0 | 535.68 | 167,606 | 163,064 | 163,064 | - n.a. - |
| 1 year ago | 2025-09-13 | 98.0 | 534.51 | 159,861 | 159,861 | 163,064 | 6,473 |
*
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 | 2026-09-13 18:45 | 532.93 | 535.00 | -2.07 |
| 1 hour prior | 2026-09-13 17:45 | 532.95 | 535.00 | -2.05 |
| 2 hours prior | 2026-09-13 16:45 | 533.00 | 535.00 | -2.00 |
| 6 hours prior | 2026-09-13 12:45 | 532.99 | 535.00 | -2.01 |
| 12 hours prior | 2026-09-13 06:45 | 533.01 | 535.00 | -1.99 |
| 24 hours prior | 2026-09-12 18:45 | 533.02 | 535.00 | -1.98 |
| 48 hours prior | 2026-09-11 18:45 | 533.06 | 535.00 | -1.94 |
*
Data is provisional and subject to revision.
Additional Information
| Impoundment date | 1952-01-01 |
| Vertical datum | NGVD29 |
| Dead pool elevation | 475.00 ft above NGVD29 |
| Emergency spillway crest elevation | 560.00 ft above NGVD29 |
| Flood pool elevation | 560.00 ft above NGVD29 |
| Maximum design elevation | 581.90 ft above NGVD29 |
| Top of dam elevation | 588.00 ft above NGVD29 |
| Conservation pool elevation | 535.00 ft above NGVD29 |
| Data download (CSV) | period of record, last one year, last 30 days |
Elevation-Area-Capacity Curves
2002-05-01 (source: TWDB)
: GIS Data
2011-09-01 (source: TWDB)
: GIS Data
|
|
| Data Source | USGS:08054500 |
| USGS Monitoring Location | USGS:08054500 |
Lake Location
