Navarro Mills Lake: 85.1% full as of 2019-09-17

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)
Today 2019-09-17 85.1 422.87 42,410 42,409 49,827 4,411
Yesterday 2019-09-16 85.3 422.89 42,498 42,497 49,827 4,414
2 days ago 2019-09-15 85.5 422.91 42,586 42,585 49,827 4,418
1 week ago 2019-09-10 86.4 423.02 43,073 43,072 49,827 4,435
1 month ago 2019-08-17 91.7 423.60 45,673 45,672 49,827 4,531
3 months ago 2019-06-17 100.0 428.82 71,988 49,827 49,827 - n.a. -
6 months ago 2019-03-17 100.0 425.03 52,348 49,827 49,827 - n.a. -
1 year ago 2018-09-17 87.4 423.13 43,562 43,561 49,827 4,453
*

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 2019-09-17 11:00 422.86 424.50 -1.64 below flood pool
1 hour prior 2019-09-17 10:00 422.86 424.50 -1.64 below flood pool
2 hours prior 2019-09-17 09:00 422.86 424.50 -1.64 below flood pool
6 hours prior 2019-09-17 05:00 422.87 424.50 -1.63 below flood pool
12 hours prior 2019-09-16 23:00 422.88 424.50 -1.62 below flood pool
24 hours prior 2019-09-16 11:00 422.89 424.50 -1.61 below flood pool
48 hours prior 2019-09-15 11:00 422.92 424.50 -1.58 below flood pool
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1963-01-01
Vertical datum NGVD29
Gauge USGS:08063050
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

Lake Location