Lake Cisco: 61.1% full as of 2024-03-28

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)
Most recent 2024-03-28 61.1 1,510.88 17,726 17,726 29,003 760
1 day prior 2024-03-27 61.2 1,510.90 17,744 17,744 29,003 760
2 days prior 2024-03-26 61.2 1,510.91 17,753 17,753 29,003 760
1 week prior 2024-03-21 61.1 1,510.86 17,708 17,708 29,003 759
1 month prior 2024-02-28 61.0 1,510.85 17,698 17,698 29,003 759
3 months prior 2023-12-28 61.1 1,510.86 17,708 17,708 29,003 759
6 months prior 2023-09-28 63.3 1,511.61 18,370 18,370 29,003 779
1 year prior 2023-03-28 70.2 1,513.87 20,367 20,367 29,003 847
*

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 2024-03-29 04:30 1,510.87 1,522.46 -11.59
1 hour prior 2024-03-29 03:30 1,510.87 1,522.46 -11.59
2 hours prior 2024-03-29 02:30 1,510.88 1,522.46 -11.58
6 hours prior 2024-03-28 22:30 1,510.87 1,522.46 -11.59
12 hours prior 2024-03-28 16:30 1,510.89 1,522.46 -11.57
24 hours prior 2024-03-28 04:30 1,510.88 1,522.46 -11.58
48 hours prior 2024-03-27 04:30 1,510.90 1,522.46 -11.56
*

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