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: 88.6% full as of 2017-07-25

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, while 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 2017-07-25 88.6 674.12 1,008,416 986,808 1,113,348 17,540
Yesterday 2017-07-24 88.7 674.17 1,009,293 987,685 1,113,348 17,552
2 days ago 2017-07-23 88.8 674.24 1,010,522 988,914 1,113,348 17,570
1 week ago 2017-07-18 89.7 674.81 1,020,580 998,972 1,113,348 17,720
1 month ago 2017-06-25 94.3 677.65 1,071,925 1,050,317 1,113,348 18,426
3 months ago 2017-04-25 99.6 680.77 1,130,547 1,108,939 1,113,348 19,146
6 months ago 2017-01-25 100.0 682.73 1,168,832 1,113,348 1,113,348 19,839
1 year ago 2016-07-25 97.2 679.35 1,103,588 1,081,980 1,113,348 18,824
*

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 2017-07-25 21:15 674.03 681.0 -7.0 below flood pool
1 hour prior 2017-07-25 20:15 - n.a. - - n.a. - - n.a. - into flood pool
2 hours prior 2017-07-25 19:15 - n.a. - - n.a. - - n.a. - into flood pool
6 hours prior 2017-07-25 15:15 674.08 681.0 -6.9 below flood pool
12 hours prior 2017-07-25 09:15 674.14 681.0 -6.9 below flood pool
24 hours prior 2017-07-24 21:15 674.13 681.0 -6.9 below flood pool
48 hours prior 2017-07-23 21:15 674.19 681.0 -6.8 below 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 535.9 ft above NAVD88 +0.6
Conservation pool elevation 681.0 ft above NAVD88 +0.6
Emergency spillway crest elevation 714.7 ft above NAVD88
Flood pool elevation 722 ft above NAVD88
Maximum design elevation 748.9 ft above NAVD88
Top of dam elevation 750 ft above NAVD88
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