Grapevine Lake Water Level
Texas · updated daily from the Texas Water Development Board
96.8% full
Grapevine Lake is near full at 534.19 ft and falling (-0.35 ft in the last 7 days).
0.81 ft below full pool of 535.00 ft · change since yesterday -0.03 ft
Reading as of 2026-08-15 · higher than 57% of August readings on record
Where Grapevine Lake sits historically
Today's level compared with every reading in our 36.8-year record for this lake.
Since yesterday
-0.03 ft
7-day change
-0.35 ft
30-day change
-1.13 ft
1-year change
-0.27 ft
Full pool
535.0 ft
Last 30 days
Last 12 months
Full history (36.8 years)
Grapevine Lake records and averages
| Current level | 534.19 ft |
|---|---|
| Percent full | 96.8% |
| Storage | 157,802 acre-feet |
| Record high | 562.98 ft (2015-06-20) |
| Record low | 521.78 ft (2006-12-28) |
| Average of all readings | 534.14 ft |
| Data span | 36.8 years (13,182 readings) |
Frequently asked questions
Is Grapevine Lake full right now?
Grapevine Lake is at 96.8% of conservation capacity as of 2026-08-15, which we classify as near full.Over the past 30 days the level has fallen 1.13 ft.
What is the water level at Grapevine Lake today?
The most recent reading is 534.19 ft (2026-08-15), sourced from the Texas Water Development Board. Readings on this page refresh automatically as the agency publishes new data.
What is the highest Grapevine Lake has ever been?
The highest level in our records is 562.98 ft on 2015-06-20. The lowest is 521.78 ft on 2006-12-28. Our record covers about 36.8 years of readings.
Is Grapevine Lake low for this time of year?
Compared with every August in our records, the current level is higher than 57% of them — near full. Seasonal comparison matters more than the raw number, because most reservoirs draw down predictably through late summer and refill over winter and spring.
Why is Grapevine Lake low right now?
Reservoir levels move for four main reasons: rainfall and runoff into the basin, releases through the dam for downstream water supply, power generation or flood control, evaporation during hot months, and seasonal drawdown schedules set by the operating agency. Grapevine Lake has fallen 1.13 ft over the past 30 days. For the operational reason on any given week, check the Texas Water Development Board directly.
How much has Grapevine Lake changed over the past year?
The level is -0.27 ft compared with this date last year (534.19 ft today). The full-history chart above covers 36.8 years, with a record high of 562.98 ft and a record low of 521.78 ft.
Nearby lakes in Texas
Source: the Texas Water Development Board. Readings are provisional and subject to revision by the publishing agency. All Texas lake levels.