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: 64.7% full as of 2022-10-02

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 2022-10-02 64.7 1,003.40 545,866 532,204 822,207 17,188
Yesterday 2022-10-01 64.8 1,003.43 546,382 532,720 822,207 17,200
2 days ago 2022-09-30 64.9 1,003.48 547,242 533,580 822,207 17,220
1 week ago 2022-09-25 65.3 1,003.65 550,175 536,513 822,207 17,285
1 month ago 2022-09-02 65.3 1,003.67 550,521 536,859 822,207 17,293
3 months ago 2022-07-02 75.5 1,008.31 634,705 621,043 822,207 19,040
6 months ago 2022-04-02 87.5 1,015.08 772,309 758,647 866,694 21,428
1 year ago 2021-10-02 92.9 1,015.32 777,460 763,798 822,207 21,490
*

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 2022-10-02 11:15 1,003.39 1,018.00 -14.61
1 hour prior 2022-10-02 10:15 - n.a. - - n.a. - - n.a. -
2 hours prior 2022-10-02 09:15 1,003.39 1,018.00 -14.61
6 hours prior 2022-10-02 05:15 1,003.40 1,018.00 -14.60
12 hours prior 2022-10-01 23:15 1,003.40 1,018.00 -14.60
24 hours prior 2022-10-01 11:15 1,003.45 1,018.00 -14.55
48 hours prior 2022-09-30 11:15 1,003.48 1,018.00 -14.52
*

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