Grapevine Lake: 93.4% 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) |
|
|---|---|---|---|---|---|---|---|
| Today | 2026-09-05 | 93.4 | 533.33 | 152,372 | 152,372 | 163,064 | 6,232 |
| Yesterday | 2026-09-04 | 93.6 | 533.37 | 152,622 | 152,622 | 163,064 | 6,239 |
| 2 days ago | 2026-09-03 | 93.7 | 533.41 | 152,871 | 152,871 | 163,064 | 6,247 |
| 1 week ago | 2026-08-29 | 94.7 | 533.66 | 154,439 | 154,439 | 163,064 | 6,293 |
| 1 month ago | 2026-08-05 | 98.9 | 534.72 | 161,226 | 161,226 | 163,064 | 6,526 |
| 3 months ago | 2026-06-05 | 100.0 | 535.66 | 167,471 | 163,064 | 163,064 | - n.a. - |
| 6 months ago | 2026-03-05 | 100.0 | 535.47 | 166,191 | 163,064 | 163,064 | - n.a. - |
| 1 year ago | 2025-09-05 | 98.4 | 534.60 | 160,444 | 160,444 | 163,064 | 6,495 |
*
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 03:45 | 533.35 | 535.00 | -1.65 |
| 1 hour prior | 2026-09-05 02:45 | 533.31 | 535.00 | -1.69 |
| 2 hours prior | 2026-09-05 01:45 | 533.33 | 535.00 | -1.67 |
| 6 hours prior | 2026-09-04 21:45 | 533.34 | 535.00 | -1.66 |
| 12 hours prior | 2026-09-04 15:45 | 533.33 | 535.00 | -1.67 |
| 24 hours prior | 2026-09-04 03:45 | 533.40 | 535.00 | -1.60 |
| 48 hours prior | 2026-09-03 03:45 | 533.52 | 535.00 | -1.48 |
*
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
