Navarro Mills Lake: 79.9% full as of 2026-09-17
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 | 2026-09-17 | 79.9 | 422.28 | 39,834 | 39,833 | 49,827 | 4,321 |
| Yesterday | 2026-09-16 | 80.1 | 422.30 | 39,920 | 39,919 | 49,827 | 4,324 |
| 2 days ago | 2026-09-15 | 80.4 | 422.33 | 40,050 | 40,049 | 49,827 | 4,329 |
| 1 week ago | 2026-09-10 | 81.5 | 422.46 | 40,614 | 40,613 | 49,827 | 4,348 |
| 1 month ago | 2026-08-17 | 87.5 | 423.14 | 43,607 | 43,606 | 49,827 | 4,454 |
| 3 months ago | 2026-06-17 | 100.0 | 425.48 | 54,532 | 49,827 | 49,827 | - n.a. - |
| 6 months ago | 2026-03-17 | 97.0 | 424.18 | 48,332 | 48,331 | 49,827 | 4,639 |
| 1 year ago | 2025-09-17 | 99.6 | 424.46 | 49,639 | 49,638 | 49,827 | 4,716 |
*
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 | 2026-09-17 03:00 | 422.28 | 424.50 | -2.22 |
| 1 hour prior | 2026-09-17 02:00 | 422.28 | 424.50 | -2.22 |
| 2 hours prior | 2026-09-17 01:00 | 422.28 | 424.50 | -2.22 |
| 6 hours prior | 2026-09-16 21:00 | 422.28 | 424.50 | -2.22 |
| 12 hours prior | 2026-09-16 15:00 | 422.30 | 424.50 | -2.20 |
| 24 hours prior | 2026-09-16 03:00 | 422.31 | 424.50 | -2.19 |
| 48 hours prior | 2026-09-15 03:00 | 422.35 | 424.50 | -2.15 |
*
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
