Granger Lake Water Level
Texas · updated daily from the Texas Water Development Board
100.0% full
Granger Lake is full at 504.80 ft and falling (-0.27 ft in the last 7 days).
0.80 ft above full pool of 504.00 ft · change since yesterday -0.02 ft
Reading as of 2026-08-15 · higher than 86% of August readings on record
Where Granger Lake sits historically
Today's level compared with every reading in our 30.9-year record for this lake.
Since yesterday
-0.02 ft
7-day change
-0.27 ft
30-day change
-1.17 ft
1-year change
+0.55 ft
Full pool
504.0 ft
Last 30 days
Last 12 months
Full history (30.9 years)
Granger Lake records and averages
| Current level | 504.80 ft |
|---|---|
| Percent full | 100.0% |
| Storage | 55,177 acre-feet |
| Record high | 523.02 ft (2007-07-27) |
| Record low | 498.4 ft (2011-11-14) |
| Average of all readings | 504.3 ft |
| Data span | 30.9 years (11,149 readings) |
Frequently asked questions
Is Granger Lake full right now?
Granger Lake is at 100.0% of conservation capacity as of 2026-08-15, which we classify as full.Over the past 30 days the level has fallen 1.17 ft.
What is the water level at Granger Lake today?
The most recent reading is 504.80 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 Granger Lake has ever been?
The highest level in our records is 523.02 ft on 2007-07-27. The lowest is 498.4 ft on 2011-11-14. Our record covers about 30.9 years of readings.
Is Granger Lake low for this time of year?
Compared with every August in our records, the current level is higher than 86% of them — 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 Granger 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. Granger Lake has fallen 1.17 ft over the past 30 days. For the operational reason on any given week, check the Texas Water Development Board directly.
How much has Granger Lake changed over the past year?
The level is +0.55 ft compared with this date last year (504.80 ft today). The full-history chart above covers 30.9 years, with a record high of 523.02 ft and a record low of 498.4 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.