Lake Sweetwater: 18.1% full as of 2026-08-23

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 2026-08-23 18.1 2,091.36 2,223 2,223 12,267 214
Yesterday 2026-08-22 18.2 2,091.39 2,229 2,229 12,267 214
2 days ago 2026-08-21 18.2 2,091.42 2,235 2,235 12,267 214
1 week ago 2026-08-16 18.5 2,091.58 2,269 2,269 12,267 216
1 month ago 2026-07-23 19.9 2,092.38 2,440 2,440 12,267 226
3 months ago 2026-05-23 22.1 2,093.54 2,705 2,705 12,267 238
6 months ago 2026-02-23 24.4 2,094.76 2,993 2,993 12,267 254
1 year ago 2025-08-23 29.3 2,097.04 3,590 3,590 12,267 283
*

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 2026-08-23 16:45 2,091.36 2,116.50 -25.14
1 hour prior 2026-08-23 15:45 2,091.36 2,116.50 -25.14
2 hours prior 2026-08-23 14:45 2,091.36 2,116.50 -25.14
6 hours prior 2026-08-23 10:45 2,091.36 2,116.50 -25.14
12 hours prior 2026-08-23 04:45 2,091.36 2,116.50 -25.14
24 hours prior 2026-08-22 16:45 2,091.39 2,116.50 -25.11
48 hours prior 2026-08-21 16:45 2,091.42 2,116.50 -25.08
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1930-01-01
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)
Data Source USGS:08083200
USGS Monitoring Location USGS:08083200

Lake Location