Lake Sweetwater: 46.2% full as of 2024-03-18

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 2024-03-18 46.2 2,103.38 5,668 5,668 12,267 376
Yesterday 2024-03-17 46.2 2,103.38 5,668 5,668 12,267 376
2 days ago 2024-03-16 46.2 2,103.37 5,665 5,665 12,267 375
1 week ago 2024-03-11 46.3 2,103.42 5,684 5,684 12,267 376
1 month ago 2024-02-18 46.9 2,103.60 5,755 5,755 12,267 379
3 months ago 2023-12-18 47.5 2,103.78 5,828 5,828 12,267 382
6 months ago 2023-09-18 49.7 2,104.45 6,091 6,091 12,267 393
1 year ago 2023-03-18 58.7 2,107.17 7,197 7,197 12,267 440
*

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 2024-03-18 22:45 2,103.37 2,116.50 -13.13
1 hour prior 2024-03-18 21:45 2,103.37 2,116.50 -13.13
2 hours prior 2024-03-18 20:45 2,103.37 2,116.50 -13.13
6 hours prior 2024-03-18 16:45 2,103.39 2,116.50 -13.11
12 hours prior 2024-03-18 10:45 2,103.38 2,116.50 -13.12
24 hours prior 2024-03-17 22:45 2,103.38 2,116.50 -13.12
48 hours prior 2024-03-16 22:45 2,103.38 2,116.50 -13.12
*

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

Lake Location