Lake Cisco: 60.7% full as of 2024-04-23

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 2024-04-23 60.7 1,510.75 17,608 17,608 29,003 756
Yesterday 2024-04-22 60.7 1,510.75 17,608 17,608 29,003 756
2 days ago 2024-04-21 60.8 1,510.79 17,644 17,644 29,003 758
1 week ago 2024-04-16 60.7 1,510.75 17,608 17,608 29,003 756
1 month ago 2024-03-23 61.1 1,510.87 17,717 17,717 29,003 759
3 months ago 2024-01-23 60.7 1,510.75 17,608 17,608 29,003 756
6 months ago 2023-10-23 61.7 1,511.08 17,905 17,905 29,003 765
1 year ago 2023-04-23 69.1 1,513.51 20,047 20,047 29,003 834
*

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 2024-04-23 11:30 1,510.76 1,522.46 -11.70
1 hour prior 2024-04-23 10:30 1,510.76 1,522.46 -11.70
2 hours prior 2024-04-23 09:30 1,510.76 1,522.46 -11.70
6 hours prior 2024-04-23 05:30 1,510.75 1,522.46 -11.71
12 hours prior 2024-04-22 23:30 1,510.75 1,522.46 -11.71
24 hours prior 2024-04-22 11:30 1,510.74 1,522.46 -11.72
48 hours prior 2024-04-21 11:30 1,510.80 1,522.46 -11.66
*

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