recent changes

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 is 21.9% full as of 2016-08-27

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, while 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.

Date Percent Full Mean Water Level
(ft)
Reservoir Storage
(acre-ft)
Conservation Storage
(acre-ft)
Conservation Capacity
(acre-ft)
Surface Area
(acres)
Today 2016-08-27 21.9 2,093.49 2,692 2,692 12,267 238
Yesterday 2016-08-26 22.0 2,093.50 2,695 2,695 12,267 238
2 days ago 2016-08-25 22.0 2,093.53 2,702 2,702 12,267 238
1 week ago 2016-08-20 22.1 2,093.59 2,717 2,717 12,267 239
1 month ago 2016-07-27 22.6 2,093.83 2,774 2,774 12,267 242
3 months ago 2016-05-27 20.7 2,092.80 2,534 2,534 12,267 230
6 months ago 2016-02-27 14.1 2,088.77 1,727 1,727 12,267 184
1 year ago 2015-08-27 12.1 2,087.41 1,490 1,490 12,267 168
*

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 2016-08-27 18:45 2,093.50 2,116.5 -23.0 below flood pool
1 hour prior 2016-08-27 17:45 2,093.50 2,116.5 -23.0 below flood pool
2 hours prior 2016-08-27 16:45 2,093.50 2,116.5 -23.0 below flood pool
6 hours prior 2016-08-27 12:45 2,093.48 2,116.5 -23.0 below flood pool
12 hours prior 2016-08-27 06:45 2,093.49 2,116.5 -23.0 below flood pool
24 hours prior 2016-08-26 18:45 2,093.50 2,116.5 -23.0 below flood pool
48 hours prior 2016-08-25 18:45 2,093.52 2,116.5 -23.0 below flood pool
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1930-01-01
Vertical datum NGVD29
Gauge USGS:08083200
Service spillway crest elevation 2116.5 ft above NGVD29
Conservation pool elevation 2116.5 ft above NGVD29
Top of dam elevation 2128.5 ft above NGVD29
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

1974-10-01 (source: twdb)