Navarro Mills Lake: 86.6% full as of 2024-12-20

The elevation-storage rating curve used to produce the storage hydrograph is made of two segments: (1) the segment up to the conservation pool top (below the red line) is based on measured data, and (2) the segment in the flood pool (above the red line) is an extrapolation from the first segment and shouldn't be relied upon for flood storage information.

Historical Data

Date Percent Full Mean Water Level
(ft) 		Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft) 		Surface Area
(acres)
Most recent 2024-12-20 86.6 423.04 43,162 43,161 49,827 4,438
1 day prior 2024-12-19 86.7 423.05 43,207 43,206 49,827 4,440
2 days prior 2024-12-18 86.9 423.07 43,295 43,294 49,827 4,443
1 week prior 2024-12-13 86.5 423.03 43,118 43,117 49,827 4,437
1 month prior 2024-11-20 88.7 423.27 44,187 44,186 49,827 4,476
3 months prior 2024-09-20 96.3 424.11 48,008 48,007 49,827 4,625
6 months prior 2024-06-20 100.0 440.95 153,889 49,827 49,827 - n.a. -
1 year prior 2023-12-20 83.3 422.67 41,531 41,530 49,827 4,380
*

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 2024-12-21 05:00 423.02 424.50 -1.48 below flood pool
1 hour prior 2024-12-21 04:00 423.03 424.50 -1.47 below flood pool
2 hours prior 2024-12-21 03:00 423.02 424.50 -1.48 below flood pool
6 hours prior 2024-12-20 23:00 423.03 424.50 -1.47 below flood pool
12 hours prior 2024-12-20 17:00 423.03 424.50 -1.47 below flood pool
24 hours prior 2024-12-20 05:00 423.05 424.50 -1.45 below flood pool
48 hours prior 2024-12-19 05:00 423.07 424.50 -1.43 below flood pool
*

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

Lake Location