Lake Jacksonville
Source: Texas Water Development Board (Water Data for Texas)
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Level history
Field notes
As of Oct 25, 2026, Lake Jacksonville stood at 420.98 ft, which is 95.4% of its conservation capacity.
That is 1.02 ft below the conservation (full) pool elevation of 422.00 ft.
Over the past 7 days the lake has been falling (−0.10 ft), and it is −0.25 ft over 30 days.
Compared with a year ago (422.00 ft), the lake is 1.02 ft lower.
For this time of year, the median in TWDB's records (1999–2025, 27 years with data) is 96.2% full, so Jacksonville is currently close to normal.
In TWDB's dataset (since 1999), the highest level recorded is 424.36 ft (Jul 6, 2007) and the lowest is 416.36 ft (Nov 18, 2011). Older records may be monthly rather than daily.
Lake facts
| Conservation storage | 24,502 ac-ft |
|---|---|
| Total storage (latest) | 24,564 ac-ft |
| Surface area | 1,129 acres |
| Gauge location | 31.9085, -95.3100 |
| Groups | Neches River Basin East Texas (Region I) Water Planning Area |
Reference levels
| Level · source | Elevation | Today vs level |
|---|---|---|
| Conservation (full) pool TWDB | 422.00 ft | −1.02 ft |
| Dead pool TWDB | 372.00 ft | +48.98 ft |
| Highest in TWDB data (since 1999) TWDB series | 424.36 ft Jul 6, 2007 | −3.38 ft |
| Lowest in TWDB data (since 1999) TWDB series | 416.36 ft Nov 18, 2011 | +4.62 ft |
| Normal range for this date TWDB series, 27 years 1999–2025 | 90.8–98.7% full (median 96.2%) | — |
| Conservation capacity TWDB | 25,670 acre-feet | — |
Only levels the agency publishes, or that we compute directly from its own records, are listed. “Today vs level” = latest reading minus the reference level. A level the source does not publish is left out rather than estimated.
Nearby lakes
Common questions
How full is Lake Jacksonville right now?
As of Oct 25, 2026, TWDB reports Lake Jacksonville at 95.4% of its conservation capacity (24,502 of 25,670 acre-feet). For this date, the middle half of past years (1999–2025) ranged from 90.8% to 98.7% full, with a median of 96.2%.
What is the record high and low at Lake Jacksonville?
In TWDB's records since 1999, the highest level is 424.36 ft (Jul 6, 2007) and the lowest is 416.36 ft (Nov 18, 2011).
What is full pool at Lake Jacksonville?
The conservation (full) pool elevation used by TWDB is 422.00 ft. The lake is currently 1.02 ft below it.
Is Lake Jacksonville rising or falling?
Over the last 7 days it changed −0.10 ft and over 30 days −0.25 ft.
How often is this page updated?
The page is rebuilt automatically every day from TWDB's published data. Values can be revised later by the source agency.
Where does the data come from?
Water Data for Texas, run by the Texas Water Development Board, which compiles gauge readings from USGS, USACE, river authorities and others. Forecasts come from the National Weather Service.
Values are TWDB daily estimates; elevations in feet above the vertical datum stated by TWDB. TWDB disclaimer: reservoir data are best estimates generated by the Texas Water Development Board from data collected by various providers; TWDB makes no warranties as to their fitness for any purpose. See data sources.