Cedar Creek Reservoir: 84.0% full as of 2026-04-01

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 2026-04-01 84.0 318.67 541,420 541,321 644,686 29,558
Yesterday 2026-03-31 84.0 318.68 541,715 541,616 644,686 29,567
2 days ago 2026-03-30 84.1 318.71 542,602 542,503 644,686 29,594
1 week ago 2026-03-25 84.8 318.85 546,755 546,656 644,686 29,718
1 month ago 2026-03-01 81.6 318.16 526,463 526,364 644,686 29,099
3 months ago 2026-01-01 83.5 318.56 538,174 538,075 644,686 29,459
6 months ago 2025-10-01 90.7 320.10 584,568 584,469 644,686 30,780
1 year ago 2025-04-01 99.7 321.94 642,823 642,724 644,686 32,719
*

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 2026-04-01 21:45 318.64 322.00 -3.36
1 hour prior 2026-04-01 20:45 318.65 322.00 -3.35
2 hours prior 2026-04-01 19:45 318.66 322.00 -3.34
6 hours prior 2026-04-01 15:45 318.66 322.00 -3.34
12 hours prior 2026-04-01 09:45 318.67 322.00 -3.33
24 hours prior 2026-03-31 21:45 318.68 322.00 -3.32
48 hours prior 2026-03-30 21:45 318.70 322.00 -3.30
*

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