Recent changes

2013-06-19: The July 2008 TWDB rating curve for this reservoir has been updated to include areas and volumes in the flood pool that were estimated from lidar data. The vertical datums of gauge, conservation pool and dead pool elevations have been adjusted to NAVD88+0.6ft.

Lake Travis: 65.3% full as of 2021-04-16

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 2021-04-16 65.3 657.43 748,954 727,346 1,113,348 13,712
Yesterday 2021-04-15 65.5 657.54 750,464 728,856 1,113,348 13,734
2 days ago 2021-04-14 65.6 657.66 752,113 730,505 1,113,348 13,759
1 week ago 2021-04-09 66.0 657.95 756,112 734,504 1,113,348 13,818
1 month ago 2021-03-16 66.9 658.73 766,952 745,344 1,113,348 13,977
3 months ago 2021-01-16 67.6 659.22 773,825 752,217 1,113,348 14,075
6 months ago 2020-10-16 69.8 660.94 798,328 776,720 1,113,348 14,419
1 year ago 2020-04-16 88.9 674.28 1,011,225 989,617 1,113,348 17,581
*

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 2021-04-16 20:45 657.45 681.00 -23.55 below flood pool
1 hour prior 2021-04-16 19:45 - n.a. - - n.a. - - n.a. - into flood pool
2 hours prior 2021-04-16 18:45 - n.a. - - n.a. - - n.a. - into flood pool
6 hours prior 2021-04-16 14:45 - n.a. - - n.a. - - n.a. - into flood pool
12 hours prior 2021-04-16 08:45 657.48 681.00 -23.52 below flood pool
24 hours prior 2021-04-15 20:45 - n.a. - - n.a. - - n.a. - into flood pool
48 hours prior 2021-04-14 20:45 - n.a. - - n.a. - - n.a. - into flood pool
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1942-01-01
Vertical datum NAVD88 +0.6
Gauge LCRA:3963
Dead pool elevation 535.90 ft above NAVD88 +0.6
Emergency spillway crest elevation 714.70 ft above NAVD88
Flood pool elevation 722.00 ft above NAVD88
Maximum design elevation 748.90 ft above NAVD88
Top of dam elevation 750.00 ft above NAVD88
Conservation pool elevation 681.00 ft above NAVD88 +0.6
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

2008-07-01 (source: twdb) : GIS Data

Lake Location