Grapevine Lake: 99.7% full as of 2026-07-30
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 | 2026-07-30 | 99.7 | 534.92 | 162,537 | 162,537 | 163,064 | 6,601 |
| Yesterday | 2026-07-29 | 99.8 | 534.95 | 162,734 | 162,734 | 163,064 | 6,641 |
| 2 days ago | 2026-07-28 | 99.9 | 534.98 | 162,932 | 162,932 | 163,064 | 6,681 |
| 1 week ago | 2026-07-23 | 100.0 | 535.24 | 164,654 | 163,064 | 163,064 | - n.a. - |
| 1 month ago | 2026-06-30 | 100.0 | 535.46 | 166,124 | 163,064 | 163,064 | - n.a. - |
| 3 months ago | 2026-04-30 | 100.0 | 536.13 | 170,674 | 163,064 | 163,064 | - n.a. - |
| 6 months ago | 2026-01-30 | 98.1 | 534.53 | 159,991 | 159,991 | 163,064 | 6,478 |
| 1 year ago | 2025-07-30 | 99.7 | 534.92 | 162,537 | 162,537 | 163,064 | 6,601 |
*
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 | 2026-07-30 15:45 | 534.92 | 535.00 | -0.08 |
| 1 hour prior | 2026-07-30 14:45 | 534.90 | 535.00 | -0.10 |
| 2 hours prior | 2026-07-30 13:45 | 534.93 | 535.00 | -0.07 |
| 6 hours prior | 2026-07-30 09:45 | 534.91 | 535.00 | -0.09 |
| 12 hours prior | 2026-07-30 03:45 | 534.93 | 535.00 | -0.07 |
| 24 hours prior | 2026-07-29 15:45 | 534.92 | 535.00 | -0.08 |
| 48 hours prior | 2026-07-28 15:45 | 534.98 | 535.00 | -0.02 |
*
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
