Lake Cisco: 42.2% full as of 2026-11-03

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 2026-11-03 42.2 1,502.88 12,247 12,247 29,003 576
Yesterday 2026-11-02 42.2 1,502.89 12,252 12,252 29,003 576
2 days ago 2026-11-01 42.2 1,502.89 12,252 12,252 29,003 576
1 week ago 2026-10-27 42.2 1,502.89 12,252 12,252 29,003 576
1 month ago 2026-10-03 42.7 1,503.11 12,381 12,381 29,003 581
3 months ago 2026-08-03 45.0 1,504.25 13,044 13,044 29,003 607
6 months ago 2026-05-03 47.6 1,505.54 13,812 13,812 29,003 636
1 year ago 2025-11-03 49.6 1,506.44 14,384 14,384 29,003 657
*

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 2026-11-03 10:30 1,502.89 1,522.46 -19.57
1 hour prior 2026-11-03 09:30 1,502.88 1,522.46 -19.58
2 hours prior 2026-11-03 08:30 1,502.87 1,522.46 -19.59
6 hours prior 2026-11-03 04:30 1,502.87 1,522.46 -19.59
12 hours prior 2026-11-02 22:30 1,502.88 1,522.46 -19.58
24 hours prior 2026-11-02 10:30 1,502.90 1,522.46 -19.56
48 hours prior 2026-11-01 10:30 1,502.89 1,522.46 -19.57
*

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
Start date: 1929-12-01 		1,522.46 ft above NGVD29
Conservation pool elevation
End date: 1929-12-01 		1,496.00 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
USGS Monitoring Location USGS:08086215

Lake Location