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: 59.2% full as of 2023-02-06

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 2023-02-06 59.2 1,002.25 526,385 512,723 866,694 16,678
Yesterday 2023-02-05 59.2 1,002.27 526,718 513,056 866,694 16,688
2 days ago 2023-02-04 59.2 1,002.26 526,552 512,890 866,694 16,683
1 week ago 2023-01-30 59.4 1,002.37 528,390 514,728 866,694 16,735
1 month ago 2023-01-06 60.4 1,002.88 536,985 523,323 866,694 16,968
3 months ago 2022-11-06 59.3 1,002.33 527,721 514,059 866,694 16,716
6 months ago 2022-08-06 66.7 1,004.32 561,838 548,176 822,207 17,525
1 year ago 2022-02-06 87.6 1,015.12 773,167 759,505 866,694 21,438
*

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 2023-02-06 16:45 1,002.23 1,020.00 -17.77
1 hour prior 2023-02-06 15:45 1,002.24 1,020.00 -17.76
2 hours prior 2023-02-06 14:45 1,002.23 1,020.00 -17.77
6 hours prior 2023-02-06 10:45 1,002.24 1,020.00 -17.76
12 hours prior 2023-02-06 04:45 1,002.28 1,020.00 -17.72
24 hours prior 2023-02-05 16:45 - n.a. - - n.a. - - n.a. -
48 hours prior 2023-02-04 16:45 - n.a. - - n.a. - - n.a. -
*

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