Cedar Creek Reservoir: 81.3% full as of 2026-01-21

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 2026-01-21 81.3 318.08 524,138 524,039 644,686 29,029
Yesterday 2026-01-20 81.4 318.11 525,009 524,910 644,686 29,056
2 days ago 2026-01-19 81.5 318.13 525,591 525,492 644,686 29,073
1 week ago 2026-01-14 82.4 318.32 531,129 531,030 644,686 29,241
1 month ago 2025-12-21 84.1 318.71 542,602 542,503 644,686 29,594
3 months ago 2025-10-21 87.4 319.41 563,533 563,434 644,686 30,196
6 months ago 2025-07-21 98.1 321.62 632,434 632,335 644,686 32,267
1 year ago 2025-01-21 86.9 319.31 560,518 560,419 644,686 30,114
*

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 2026-01-21 11:15 318.08 322.00 -3.92
1 hour prior 2026-01-21 10:15 318.08 322.00 -3.92
2 hours prior 2026-01-21 09:15 318.08 322.00 -3.92
6 hours prior 2026-01-21 05:15 318.08 322.00 -3.92
12 hours prior 2026-01-20 23:15 318.09 322.00 -3.91
24 hours prior 2026-01-20 11:15 318.11 322.00 -3.89
48 hours prior 2026-01-19 11:15 318.13 322.00 -3.87
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1966-01-01
Vertical datum NGVD29
Dead pool elevation 263.50 ft above NGVD29
Service spillway crest elevation 302.00 ft above NGVD29
Top of gate elevation 325.00 ft above NGVD29
Top of dam elevation 340.00 ft above NGVD29
Conservation pool elevation 322.00 ft above NGVD29
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

1966-01-01 (source: USGS)
2005-07-01 (source: TWDB) : GIS Data
Data Source USGS:08063010

Lake Location