Notes

2013-02-12: The rating curve for this reservoir has been updated and replaced with data from the Texas Water Development Board's Report 126.

Lake Sweetwater: 59.7% 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 59.7 2,107.46 7,329 7,329 12,267 445
Yesterday 2023-02-05 59.7 2,107.46 7,329 7,329 12,267 445
2 days ago 2023-02-04 59.7 2,107.46 7,329 7,329 12,267 445
1 week ago 2023-01-30 59.6 2,107.42 7,310 7,310 12,267 444
1 month ago 2023-01-06 60.2 2,107.59 7,388 7,388 12,267 448
3 months ago 2022-11-06 61.6 2,107.96 7,561 7,561 12,267 455
6 months ago 2022-08-06 65.8 2,109.06 8,070 8,070 12,267 477
1 year ago 2022-02-06 79.5 2,112.30 9,749 9,749 12,267 545
*

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 14:45 2,107.47 2,116.50 -9.03
1 hour prior 2023-02-06 13:45 2,107.47 2,116.50 -9.03
2 hours prior 2023-02-06 12:45 2,107.48 2,116.50 -9.02
6 hours prior 2023-02-06 08:45 2,107.46 2,116.50 -9.04
12 hours prior 2023-02-06 02:45 2,107.46 2,116.50 -9.04
24 hours prior 2023-02-05 14:45 2,107.47 2,116.50 -9.03
48 hours prior 2023-02-04 14:45 2,107.47 2,116.50 -9.03
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1930-01-01
Gauge USGS:08083200
Vertical datum NGVD29
Service spillway crest elevation 2,116.50 ft above NGVD29
Top of dam elevation 2,128.50 ft above NGVD29
Conservation pool elevation 2,116.50 ft above NGVD29
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

1974-10-01 (source: TWDB)

Lake Location