Navarro Mills Lake: 77.0% full as of 2026-09-30
Historical Data
| Date | Percent Full |
Mean Water Level (ft) |
Reservoir Storage (acre-ft) |
Conservation Storage (acre-ft) |
Conservation Capacity (acre-ft) |
Surface Area (acres) |
|
|---|---|---|---|---|---|---|---|
| Today | 2026-09-30 | 77.0 | 421.94 | 38,374 | 38,373 | 49,827 | 4,267 |
| Yesterday | 2026-09-29 | 77.1 | 421.95 | 38,417 | 38,416 | 49,827 | 4,269 |
| 2 days ago | 2026-09-28 | 77.4 | 421.98 | 38,545 | 38,544 | 49,827 | 4,274 |
| 1 week ago | 2026-09-23 | 78.5 | 422.11 | 39,102 | 39,101 | 49,827 | 4,295 |
| 1 month ago | 2026-08-30 | 84.0 | 422.74 | 41,838 | 41,837 | 49,827 | 4,391 |
| 3 months ago | 2026-06-30 | 98.8 | 424.37 | 49,217 | 49,216 | 49,827 | 4,680 |
| 6 months ago | 2026-03-30 | 95.3 | 424.00 | 47,500 | 47,499 | 49,827 | 4,604 |
| 1 year ago | 2025-09-30 | 97.6 | 424.25 | 48,657 | 48,656 | 49,827 | 4,654 |
*
Percent Full is based on Conservation Storage and Conservation Capacity and doesn't account for storage in flood pool.
**
Values above, including today's are averaged conditions. For near real-time instantaneous water level, see table below or the interactive map viewer.
Most Recent Instantaneous Water Level
| Date/time |
Water Level (ft) |
Conservation Pool Elevation (ft) |
Height Above Conservation Pool (ft) |
|
|---|---|---|---|---|
| Most recent | 2026-09-30 06:00 | 421.94 | 424.50 | -2.56 |
| 1 hour prior | 2026-09-30 05:00 | 421.94 | 424.50 | -2.56 |
| 2 hours prior | 2026-09-30 04:00 | 421.94 | 424.50 | -2.56 |
| 6 hours prior | 2026-09-30 00:00 | 421.94 | 424.50 | -2.56 |
| 12 hours prior | 2026-09-29 18:00 | 421.95 | 424.50 | -2.55 |
| 24 hours prior | 2026-09-29 06:00 | 421.97 | 424.50 | -2.53 |
| 48 hours prior | 2026-09-28 06:00 | 421.99 | 424.50 | -2.51 |
*
Data is provisional and subject to revision.
Additional Information
| Impoundment date | 1963-01-01 |
| Vertical datum | NGVD29 |
| Dead pool elevation | 400.00 ft above NGVD29 |
| Service spillway crest elevation | 414.00 ft above NGVD29 |
| Top of flood gate elevation | 443.00 ft above NGVD29 |
| Emergency spillway crest elevation | 443.00 ft above NGVD29 |
| Flood pool elevation | 443.00 ft above NGVD29 |
| Maximum design elevation | 451.90 ft above NGVD29 |
| Top of dam elevation | 457.00 ft above NGVD29 |
| Conservation pool elevation | 424.50 ft above NGVD29 |
| Data download (CSV) | period of record, last one year, last 30 days |
Elevation-Area-Capacity Curves
2008-04-01 (source: TWDB)
: GIS Data
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|
| Data Source | USGS:08063050 |
| USGS Monitoring Location | USGS:08063050 |
Lake Location
