Lake Buchanan: 64.2% full as of 2024-11-20

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 2024-11-20 64.2 1,004.79 570,113 556,451 866,694 17,692
1 day prior 2024-11-19 64.1 1,004.75 569,406 555,744 866,694 17,677
2 days prior 2024-11-18 64.0 1,004.69 568,346 554,684 866,694 17,656
1 week prior 2024-11-13 62.4 1,003.90 554,508 540,846 866,694 17,377
1 month prior 2024-10-20 66.9 1,004.43 563,768 550,106 822,207 17,563
3 months prior 2024-08-20 71.4 1,006.48 600,526 586,864 822,207 18,305
6 months prior 2024-05-20 71.2 1,006.38 598,698 585,036 822,207 18,265
1 year prior 2023-11-20 44.9 994.12 403,083 389,421 866,694 13,986
*

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 2024-11-20 23:30 1,004.78 1,020.00 -15.22
1 hour prior 2024-11-20 22:30 1,004.77 1,020.00 -15.23
2 hours prior 2024-11-20 21:30 - n.a. - - n.a. - - n.a. -
6 hours prior 2024-11-20 17:30 1,004.56 1,020.00 -15.44
12 hours prior 2024-11-20 11:30 1,004.80 1,020.00 -15.20
24 hours prior 2024-11-19 23:30 - n.a. - - n.a. - - n.a. -
48 hours prior 2024-11-18 23:30 1,004.73 1,020.00 -15.27
*

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