recent changes

2013-06-19: The vertical datums of gauge, conservation pool and dead pool elevations for this lake have been adjusted to NGVD29+0.01ft.

Lake Buchanan is 99.5% full as of 2016-09-28

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.

Date Percent Full Mean Water Level
(ft)
Reservoir Storage
(acre-ft)
Conservation Storage
(acre-ft)
Conservation Capacity
(acre-ft)
Surface Area
(acres)
Today 2016-09-28 99.5 1,017.83 828,419 813,218 816,904 21,680
Yesterday 2016-09-27 99.5 1,017.83 828,419 813,218 816,904 21,680
2 days ago 2016-09-26 99.5 1,017.82 828,202 813,000 816,904 21,678
1 week ago 2016-09-21 99.3 1,017.72 826,035 810,834 816,904 21,664
1 month ago 2016-08-28 99.3 1,017.73 826,251 811,050 816,904 21,666
3 months ago 2016-06-28 100.0 1,018.09 834,059 816,904 816,904 21,715
6 months ago 2016-03-28 89.4 1,015.80 784,799 769,598 860,607 21,263
1 year ago 2015-09-28 70.2 1,005.81 588,910 573,708 816,904 17,678
*

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 2016-09-28 06:45 1,017.83 1,018.0 -0.2 below flood pool
1 hour prior 2016-09-28 05:45 1,017.83 1,018.0 -0.2 below flood pool
2 hours prior 2016-09-28 04:45 1,017.83 1,018.0 -0.2 below flood pool
6 hours prior 2016-09-28 00:45 1,017.83 1,018.0 -0.2 below flood pool
12 hours prior 2016-09-27 18:45 1,017.83 1,018.0 -0.2 below flood pool
24 hours prior 2016-09-27 06:45 1,017.83 1,018.0 -0.2 below flood pool
48 hours prior 2016-09-26 06:45 1,017.81 1,018.0 -0.2 below flood pool
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1938-01-01
Vertical datum NGVD29 +0.01
Gauge LCRA:1995
Dead pool elevation 937.5 ft above NGVD29 +0.01
Service spillway crest elevation 1020.5 ft above NGVD29
Conservation pool elevation
ending 1990-03-08
1020.5 ft above NGVD29 +0.01
Conservation pool elevation
1990-03-08 to 1990-05-01
1020 ft above NGVD29 +0.01
Conservation pool elevation
seasonal: May 1 to November 1 starting 1990-05-01
1018 ft above NGVD29 +0.01
Conservation pool elevation
seasonal: November 1 to May 1 starting 1990-05-01
1020 ft above NGVD29 +0.01
Top of flood gate elevation 1020.5 ft above NGVD29
Emergency spillway crest elevation 1020.5 ft above NGVD29
Maximum design elevation 1024 ft above NGVD29
Top of dam elevation 1025 ft above NGVD29
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

2006-03-01 (source: twdb) : GIS Data