Lake Cisco: 58.4% full as of 2025-01-22

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 2025-01-22 58.4 1,509.91 16,934 16,934 29,003 735
1 day prior 2025-01-21 58.4 1,509.92 16,941 16,941 29,003 735
2 days prior 2025-01-20 58.4 1,509.93 16,949 16,949 29,003 736
1 week prior 2025-01-15 58.6 1,510.01 17,006 17,006 29,003 737
1 month prior 2024-12-22 59.0 1,510.16 17,118 17,118 29,003 741
3 months prior 2024-10-22 54.5 1,508.41 15,814 15,814 29,003 701
6 months prior 2024-07-22 57.6 1,509.60 16,710 16,710 29,003 728
1 year prior 2024-01-22 60.6 1,510.73 17,590 17,590 29,003 756
*

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 2025-01-23 02:30 1,509.90 1,522.46 -12.56
1 hour prior 2025-01-23 01:30 1,509.90 1,522.46 -12.56
2 hours prior 2025-01-23 00:30 1,509.90 1,522.46 -12.56
6 hours prior 2025-01-22 20:30 1,509.90 1,522.46 -12.56
12 hours prior 2025-01-22 14:30 1,509.91 1,522.46 -12.55
24 hours prior 2025-01-22 02:30 1,509.91 1,522.46 -12.55
48 hours prior 2025-01-21 02:30 1,509.92 1,522.46 -12.54
*

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