Lake Colorado City: 55.5% full as of 2026-01-11

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 2026-01-11 55.5 2,059.47 17,070 17,070 30,758 - n.a. -
Yesterday 2026-01-10 55.5 2,059.48 17,081 17,081 30,758 - n.a. -
2 days ago 2026-01-09 55.6 2,059.50 17,103 17,103 30,758 - n.a. -
1 week ago 2026-01-04 55.7 2,059.53 17,136 17,136 30,758 - n.a. -
1 month ago 2025-12-11 56.3 2,059.70 17,323 17,323 30,758 - n.a. -
3 months ago 2025-10-11 58.7 2,060.36 18,063 18,063 30,758 - n.a. -
6 months ago 2025-07-11 65.2 2,062.06 20,057 20,057 30,758 - n.a. -
1 year ago 2025-01-11 73.4 2,064.07 22,585 22,585 30,758 - n.a. -
*

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 2026-01-11 22:00 2,059.46 2,070.20 -10.74
1 hour prior 2026-01-11 21:00 2,059.46 2,070.20 -10.74
2 hours prior 2026-01-11 20:00 2,059.46 2,070.20 -10.74
6 hours prior 2026-01-11 16:00 2,059.47 2,070.20 -10.73
12 hours prior 2026-01-11 10:00 2,059.47 2,070.20 -10.73
24 hours prior 2026-01-10 22:00 2,059.47 2,070.20 -10.73
48 hours prior 2026-01-09 22:00 2,059.49 2,070.20 -10.71
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1949-01-01
Vertical datum NGVD29
Dead pool elevation 2,024.30 ft above NGVD29
Service spillway crest elevation 2,070.20 ft above NGVD29
Emergency spillway crest elevation 2,073.40 ft above NGVD29
Top of dam elevation 2,090.00 ft above NGVD29
Conservation pool elevation 2,070.20 ft above NGVD29
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

Data Source USGS:08123000

Lake Location