Navarro Mills Lake water level today
On Oct 28, 2026, Navarro Mills Lake is at 422.16 ft, 78.9% full (2.34 ft below full pool). That is 6.7 points below normal for this date.
Source: Texas Water Development Board · storage 39,316 of 49,827 acre-ft · provisional data
Navarro Mills Lake percent full history
Percent full Normal range (10th–90th percentile, 1996–2025) Average
Navarro Mills Lake from space
The same area near the lowest and the highest level since 2016, on clear days. Compare the shoreline and the coves.
Imagery: NASA GIBS, Harmonized Landsat Sentinel-2 (HLS). Landsat 8/9 courtesy of NASA/USGS. Black specks are cloud and shadow masks.
Records and key dates
- Record high
- 100.0%Feb 19, 1989
- Record low
- 34.7%Dec 18, 2006
- 12-month high
- 100.0%May 2, 2026
- 12-month low
- 76.9%Sep 30, 2026
- Last time full
- Jun 26, 2026
- Change in 1 year
- −1.86 ft−16.6 pts
About Navarro Mills Lake
- River basin
- Trinity
- Full pool (top of conservation pool)
- 424.50 ft
- Conservation capacity
- 49,827 acre-ft
- Surface area today
- 4,303 acres
- Dead pool elevation
- 400.00 ft
- Flood control reservoir
- Yes
- Data since
- Sep 30, 1988
Monthly average, last 10 years
Average percent full each month.
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 97% | 98% | 97% | 96% | 100% | 100% | 96% | 88% | 80% | 81% | — | — |
| 2025 | 92% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 99% | 95% | 94% | 98% |
| 2024 | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 98% | 93% | 89% | 87% |
| 2023 | 74% | 91% | 99% | 99% | 100% | 100% | 98% | 90% | 83% | 80% | 85% | 87% |
| 2022 | 88% | 88% | 86% | 84% | 92% | 95% | 86% | 79% | 76% | 70% | 70% | 75% |
| 2021 | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 95% | 93% | 91% | 90% |
| 2020 | 77% | 91% | 100% | 100% | 100% | 97% | 99% | 97% | 100% | 98% | 95% | 94% |
| 2019 | 100% | 100% | 100% | 100% | 100% | 100% | 98% | 92% | 85% | 81% | 80% | 78% |
| 2018 | 82% | 82% | 90% | 100% | 100% | 97% | 92% | 88% | 87% | 94% | 100% | 100% |
| 2017 | 99% | 100% | 100% | 100% | 100% | 100% | 100% | 98% | 92% | 89% | 85% | 83% |
Frequently asked questions
Is Navarro Mills Lake full?
Not quite. On Oct 28, 2026 Navarro Mills Lake was 78.9% full, 2.34 feet below its full pool elevation of 424.50 ft. It was last full on Jun 26, 2026.
What is the normal level of Navarro Mills Lake for this time of year?
Between 1996 and 2025, Navarro Mills Lake averaged 85.6% full around Oct 28, and 8 in 10 years it was between 68.2% and 100.0%. Today it is −6.7 percentage points below that average.
What is the lowest Navarro Mills Lake has been?
In the TWDB record, which starts in 1988, the lowest daily value was 34.7% on Dec 18, 2006. The highest was 100.0% on Feb 19, 1989.
How often is the Navarro Mills Lake water level updated?
TWDB publishes one reading per day for each reservoir. We check for new data every 2 hours and show the date of the reading next to the level. Recent values are provisional.
What does percent full mean?
It is the water stored in the conservation pool divided by the conservation capacity (49,827 acre-feet for Navarro Mills Lake). Water above the conservation pool is flood storage and is not counted, so a reservoir can show 100% while rising into its flood pool.