Lake Granbury Water Level
Texas · updated daily from the Texas Water Development Board
90.9% full
Lake Granbury is near full at 691.17 ft and steady (-0.11 ft in the last 7 days).
1.53 ft below full pool of 692.70 ft · change since yesterday +0.01 ft
Reading as of 2026-08-15 · higher than 26% of August readings on record
Where Lake Granbury sits historically
Today's level compared with every reading in our 38.9-year record for this lake.
Since yesterday
+0.01 ft
7-day change
-0.11 ft
30-day change
-0.92 ft
1-year change
-1.25 ft
Full pool
692.7 ft
Last 30 days
Last 12 months
Full history (38.9 years)
Lake Granbury records and averages
| Current level | 691.17 ft |
|---|---|
| Percent full | 90.9% |
| Storage | 121,782 acre-feet |
| Record high | 692.96 ft (1989-05-17) |
| Record low | 681.5 ft (2014-06-21) |
| Average of all readings | 691.64 ft |
| Data span | 38.9 years (14,104 readings) |
Frequently asked questions
Is Lake Granbury full right now?
Lake Granbury is at 90.9% of conservation capacity as of 2026-08-15, which we classify as near full.Over the past 30 days the level has fallen 0.92 ft.
What is the water level at Lake Granbury today?
The most recent reading is 691.17 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 Lake Granbury has ever been?
The highest level in our records is 692.96 ft on 1989-05-17. The lowest is 681.5 ft on 2014-06-21. Our record covers about 38.9 years of readings.
Is Lake Granbury low for this time of year?
Compared with every August in our records, the current level is higher than 26% 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 Lake Granbury changing 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. Lake Granbury has fallen 0.92 ft over the past 30 days. For the operational reason on any given week, check the Texas Water Development Board directly.
How much has Lake Granbury changed over the past year?
The level is -1.25 ft compared with this date last year (691.17 ft today). The full-history chart above covers 38.9 years, with a record high of 692.96 ft and a record low of 681.5 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.