Navarro Mills Lake: 88.5% full as of 2026-08-14
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 | 2026-08-14 | 88.5 | 423.25 | 44,098 | 44,097 | 49,827 | 4,472 |
| Yesterday | 2026-08-13 | 88.8 | 423.28 | 44,232 | 44,231 | 49,827 | 4,477 |
| 2 days ago | 2026-08-12 | 89.0 | 423.31 | 44,366 | 44,365 | 49,827 | 4,482 |
| 1 week ago | 2026-08-07 | 90.5 | 423.47 | 45,086 | 45,085 | 49,827 | 4,509 |
| 1 month ago | 2026-07-14 | 96.1 | 424.08 | 47,869 | 47,868 | 49,827 | 4,619 |
| 3 months ago | 2026-05-14 | 100.0 | 424.60 | 50,298 | 49,827 | 49,827 | - n.a. - |
| 6 months ago | 2026-02-14 | 97.7 | 424.26 | 48,704 | 48,703 | 49,827 | 4,656 |
| 1 year ago | 2025-08-14 | 100.0 | 424.63 | 50,440 | 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 | 2026-08-14 12:00 | 423.24 | 424.50 | -1.26 |
| 1 hour prior | 2026-08-14 11:00 | 423.24 | 424.50 | -1.26 |
| 2 hours prior | 2026-08-14 10:00 | 423.25 | 424.50 | -1.25 |
| 6 hours prior | 2026-08-14 06:00 | 423.24 | 424.50 | -1.26 |
| 12 hours prior | 2026-08-14 00:00 | 423.25 | 424.50 | -1.25 |
| 24 hours prior | 2026-08-13 12:00 | 423.28 | 424.50 | -1.22 |
| 48 hours prior | 2026-08-12 12:00 | 423.32 | 424.50 | -1.18 |
*
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
