Lake Cisco: 61.0% full as of 2023-12-09

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 2023-12-09 61.0 1,510.84 17,689 17,689 29,003 759
Yesterday 2023-12-08 61.1 1,510.89 17,735 17,735 29,003 760
2 days ago 2023-12-07 61.2 1,510.91 17,753 17,753 29,003 760
1 week ago 2023-12-02 61.4 1,510.97 17,807 17,807 29,003 762
1 month ago 2023-11-09 62.0 1,511.16 17,975 17,975 29,003 767
3 months ago 2023-09-09 63.4 1,511.62 18,379 18,379 29,003 780
6 months ago 2023-06-09 70.7 1,514.01 20,492 20,492 29,003 851
1 year ago 2022-12-09 71.8 1,514.39 20,833 20,833 29,003 864
*

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 2023-12-09 11:30 1,510.84 1,522.46 -11.62
1 hour prior 2023-12-09 10:30 1,510.85 1,522.46 -11.61
2 hours prior 2023-12-09 09:30 1,510.84 1,522.46 -11.62
6 hours prior 2023-12-09 05:30 1,510.85 1,522.46 -11.61
12 hours prior 2023-12-08 23:30 1,510.85 1,522.46 -11.61
24 hours prior 2023-12-08 11:30 1,510.92 1,522.46 -11.54
48 hours prior 2023-12-07 11:30 - n.a. - - n.a. - - n.a. -
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1923-01-01
Vertical datum NGVD29
Service spillway crest elevation 1,522.46 ft above NGVD29
Top of dam elevation 1,528.50 ft above NGVD29
Conservation pool elevation
End date: 1929-12-01
1,496.00 ft above NGVD29
Conservation pool elevation
Start date: 1929-12-01
1,522.46 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:08086215

Lake Location