Notes

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: 60.8% full as of 2022-12-09

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)
Most recent 2022-12-09 60.8 1,003.08 540,387 526,725 866,694 17,055
1 day prior 2022-12-08 60.8 1,003.08 540,387 526,725 866,694 17,055
2 days prior 2022-12-07 60.7 1,003.06 540,046 526,384 866,694 17,047
1 week prior 2022-12-02 60.5 1,002.93 537,834 524,172 866,694 16,990
1 month prior 2022-11-09 59.1 1,002.23 526,051 512,389 866,694 16,669
3 months prior 2022-09-09 66.2 1,004.10 557,991 544,329 822,207 17,448
6 months prior 2022-06-09 82.2 1,011.11 689,616 675,954 822,207 20,155
1 year prior 2021-12-09 87.9 1,015.23 775,526 761,864 866,694 21,467
*

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 2022-12-10 03:30 1,003.09 1,020.00 -16.91
1 hour prior 2022-12-10 02:30 1,003.09 1,020.00 -16.91
2 hours prior 2022-12-10 01:30 - n.a. - - n.a. - - n.a. -
6 hours prior 2022-12-09 21:30 1,003.09 1,020.00 -16.91
12 hours prior 2022-12-09 15:30 - n.a. - - n.a. - - n.a. -
24 hours prior 2022-12-09 03:30 1,003.09 1,020.00 -16.91
48 hours prior 2022-12-08 03:30 1,003.08 1,020.00 -16.92
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1938-01-01
Gauge LCRA:1995
Vertical datum NAVD88 +0.26
Dead pool elevation 937.00 ft above NAVD88 +0.26
Service spillway crest elevation 1,020.49 ft above NAVD88 +0.26
Top of flood gate elevation 1,021.50 ft above NAVD88 +0.26
Emergency spillway crest elevation 1,020.49 ft above NAVD88 +0.26
Maximum design elevation 1,023.99 ft above NAVD88 +0.26
Top of dam elevation 1,025.50 ft above NAVD88 +0.26
Conservation pool elevation
End date: 1990-03-08
1,020.50 ft above NAVD88 +0.26
Conservation pool elevation
Start date to end date: 1990-03-08 to 1990-05-01
1,020.00 ft above NAVD88 +0.26
Conservation pool elevation
Start date: 1990-05-01 (Seasonal: May 1 to November 1)
1,018.00 ft above NAVD88 +0.26
Conservation pool elevation
Start date: 1990-05-01 (Seasonal: November 1 to May 1)
1,020.00 ft above NAVD88 +0.26
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

2006-03-01 (source: TWDB) : GIS Data
2019-07-01 (source: TWDB) : GIS Data

Lake Location