Navarro Mills Lake: 83.0% full as of 2026-09-03
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 | 2026-09-03 | 83.0 | 422.63 | 41,356 | 41,355 | 49,827 | 4,374 |
| Yesterday | 2026-09-02 | 83.2 | 422.65 | 41,443 | 41,442 | 49,827 | 4,377 |
| 2 days ago | 2026-09-01 | 83.4 | 422.68 | 41,575 | 41,574 | 49,827 | 4,382 |
| 1 week ago | 2026-08-27 | 84.7 | 422.82 | 42,190 | 42,189 | 49,827 | 4,403 |
| 1 month ago | 2026-08-03 | 91.7 | 423.60 | 45,673 | 45,672 | 49,827 | 4,531 |
| 3 months ago | 2026-06-03 | 100.0 | 425.04 | 52,396 | 49,827 | 49,827 | - n.a. - |
| 6 months ago | 2026-03-03 | 97.1 | 424.19 | 48,378 | 48,377 | 49,827 | 4,641 |
| 1 year ago | 2025-09-03 | 100.0 | 424.96 | 52,012 | 49,827 | 49,827 | - n.a. - |
*
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 | 2026-09-03 15:00 | 422.61 | 424.50 | -1.89 |
| 1 hour prior | 2026-09-03 14:00 | 422.61 | 424.50 | -1.89 |
| 2 hours prior | 2026-09-03 13:00 | 422.61 | 424.50 | -1.89 |
| 6 hours prior | 2026-09-03 09:00 | 422.62 | 424.50 | -1.88 |
| 12 hours prior | 2026-09-03 03:00 | 422.65 | 424.50 | -1.85 |
| 24 hours prior | 2026-09-02 15:00 | 422.66 | 424.50 | -1.84 |
| 48 hours prior | 2026-09-01 15:00 | 422.68 | 424.50 | -1.82 |
*
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
|
|
| Data Source | USGS:08063050 |
| USGS Monitoring Location | USGS:08063050 |
Lake Location
