Lake Arlington Water Level
Texas · updated daily from the Texas Water Development Board
76.7% full
Lake Arlington is below full at 545.00 ft and steady (-0.15 ft in the last 7 days).
5.00 ft below full pool of 550.00 ft · change since yesterday +0.02 ft
Reading as of 2026-08-15 · higher than 37% of August readings on record
Where Lake Arlington sits historically
Today's level compared with every reading in our 38.6-year record for this lake.
Since yesterday
+0.02 ft
7-day change
-0.15 ft
30-day change
-3.48 ft
1-year change
-4.07 ft
Full pool
550.0 ft
Last 30 days
Last 12 months
Full history (38.6 years)
Lake Arlington records and averages
| Current level | 545.00 ft |
|---|---|
| Percent full | 76.7% |
| Storage | 30,848 acre-feet |
| Record high | 562.0 ft (1989-05-18) |
| Record low | 538.0 ft (1988-08-30) |
| Average of all readings | 547.06 ft |
| Data span | 38.6 years (12,755 readings) |
Frequently asked questions
Is Lake Arlington full right now?
Lake Arlington is at 76.7% of conservation capacity as of 2026-08-15, which we classify as below full.Over the past 30 days the level has fallen 3.48 ft.
What is the water level at Lake Arlington today?
The most recent reading is 545.00 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 Arlington has ever been?
The highest level in our records is 562.0 ft on 1989-05-18. The lowest is 538.0 ft on 1988-08-30. Our record covers about 38.6 years of readings.
Is Lake Arlington low for this time of year?
Compared with every August in our records, the current level is higher than 37% of them — below 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 Arlington 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 Arlington has fallen 3.48 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 Arlington changed over the past year?
The level is -4.07 ft compared with this date last year (545.00 ft today). The full-history chart above covers 38.6 years, with a record high of 562.0 ft and a record low of 538.0 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.