Recent changes

2013-06-19: The vertical datums of gauge, conservation pool and dead pool elevations for this lake have been adjusted to NGVD29-0.05ft.

Inks Lake: 93.5% full as of 2017-09-21

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 2017-09-21 93.5 887.33 13,344 13,050 13,962 759
Yesterday 2017-09-20 93.4 887.32 13,337 13,043 13,962 758
2 days ago 2017-09-19 92.9 887.22 13,261 12,967 13,962 754
1 week ago 2017-09-14 92.9 887.23 13,269 12,975 13,962 754
1 month ago 2017-08-21 93.4 887.32 13,337 13,043 13,962 758
3 months ago 2017-06-21 93.5 887.34 13,352 13,058 13,962 759
6 months ago 2017-03-21 91.9 887.03 13,119 12,825 13,962 746
1 year ago 2016-09-21 92.4 887.13 13,194 12,900 13,962 750
*

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 2017-09-21 16:00 887.33 888.5 -1.2 below flood pool
1 hour prior 2017-09-21 15:00 - n.a. - - n.a. - - n.a. - into flood pool
2 hours prior 2017-09-21 14:00 - n.a. - - n.a. - - n.a. - into flood pool
6 hours prior 2017-09-21 10:00 887.33 888.5 -1.2 below flood pool
12 hours prior 2017-09-21 04:00 887.34 888.5 -1.2 below flood pool
24 hours prior 2017-09-20 16:00 887.32 888.5 -1.2 below flood pool
48 hours prior 2017-09-19 16:00 - n.a. - - n.a. - - n.a. - into flood pool
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1938-01-01
Vertical datum NGVD29 -0.05
Gauge LCRA:1999
Dead pool elevation 844.5 ft above NGVD29 -0.05
Emergency spillway crest elevation 888.3 ft above NGVD29
Top of dam elevation 922.0 ft above NGVD29
Conservation pool elevation 888.5 ft above NGVD29 -0.05
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

2007-04-01 (source: twdb) : GIS Data

Lake Location