Lake Sweetwater: 18.6% full as of 2026-08-14

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 2026-08-14 18.6 2,091.65 2,284 2,284 12,267 217
1 day prior 2026-08-13 18.7 2,091.69 2,293 2,293 12,267 218
2 days prior 2026-08-12 18.8 2,091.73 2,302 2,302 12,267 218
1 week prior 2026-08-07 19.1 2,091.90 2,339 2,339 12,267 220
1 month prior 2026-07-14 20.0 2,092.46 2,457 2,457 12,267 227
3 months prior 2026-05-14 22.2 2,093.63 2,726 2,726 12,267 240
6 months prior 2026-02-14 24.6 2,094.85 3,014 3,014 12,267 254
1 year prior 2025-08-14 29.7 2,097.24 3,646 3,646 12,267 286
*

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 2026-08-15 03:45 2,091.61 2,116.50 -24.89
1 hour prior 2026-08-15 02:45 2,091.62 2,116.50 -24.88
2 hours prior 2026-08-15 01:45 2,091.62 2,116.50 -24.88
6 hours prior 2026-08-14 21:45 2,091.62 2,116.50 -24.88
12 hours prior 2026-08-14 15:45 2,091.65 2,116.50 -24.85
24 hours prior 2026-08-14 03:45 2,091.65 2,116.50 -24.85
48 hours prior 2026-08-13 03:45 2,091.70 2,116.50 -24.80
*

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