Lake Buchanan: 73.1% full as of 2024-07-26

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 2024-07-26 73.1 1,007.26 614,930 601,268 822,207 18,628
1 day prior 2024-07-25 73.1 1,007.26 614,930 601,268 822,207 18,628
2 days prior 2024-07-24 73.2 1,007.27 615,116 601,454 822,207 18,631
1 week prior 2024-07-19 73.3 1,007.32 616,048 602,386 822,207 18,651
1 month prior 2024-06-26 77.1 1,008.98 647,553 633,891 822,207 19,321
3 months prior 2024-04-26 46.7 995.20 418,347 404,685 866,694 14,277
6 months prior 2024-01-26 45.2 994.31 405,746 392,084 866,694 14,038
1 year prior 2023-07-26 55.5 998.70 469,979 456,317 822,207 15,229
*

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 2024-07-27 04:00 1,007.26 1,018.00 -10.74
1 hour prior 2024-07-27 03:00 1,007.26 1,018.00 -10.74
2 hours prior 2024-07-27 02:00 1,007.26 1,018.00 -10.74
6 hours prior 2024-07-26 22:00 - n.a. - - n.a. - - n.a. -
12 hours prior 2024-07-26 16:00 - n.a. - - n.a. - - n.a. -
24 hours prior 2024-07-26 04:00 1,007.26 1,018.00 -10.74
48 hours prior 2024-07-25 04:00 1,007.27 1,018.00 -10.73
*

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
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
Data Source LCRA:1995

Lake Location