Lake Buchanan: 57.7% full as of 2025-03-13

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 2025-03-13 57.7 1,001.50 514,013 500,351 866,694 16,314
Yesterday 2025-03-12 57.7 1,001.51 514,176 500,514 866,694 16,319
2 days ago 2025-03-11 57.8 1,001.54 514,666 501,004 866,694 16,333
1 week ago 2025-03-06 58.1 1,001.70 517,285 503,623 866,694 16,410
1 month ago 2025-02-13 59.3 1,002.33 527,721 514,059 866,694 16,716
3 months ago 2024-12-13 62.7 1,004.06 557,293 543,631 866,694 17,434
6 months ago 2024-09-13 68.5 1,005.16 576,684 563,022 822,207 17,826
1 year ago 2024-03-13 46.2 994.87 413,650 399,988 866,694 14,190
*

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 2025-03-13 02:45 1,001.50 1,020.00 -18.50
1 hour prior 2025-03-13 01:45 - n.a. - - n.a. - - n.a. -
2 hours prior 2025-03-13 00:45 1,001.50 1,020.00 -18.50
6 hours prior 2025-03-12 20:45 1,001.52 1,020.00 -18.48
12 hours prior 2025-03-12 14:45 1,001.53 1,020.00 -18.47
24 hours prior 2025-03-12 02:45 - n.a. - - n.a. - - n.a. -
48 hours prior 2025-03-11 02:45 - n.a. - - n.a. - - n.a. -
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1938-01-01
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
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
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
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
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
Data Source LCRA:1995

Lake Location