Lake Coleman: 99.1% full as of 2024-10-03

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 2024-10-03 99.1 1,717.31 37,751 37,733 38,075 1,805
Yesterday 2024-10-02 99.2 1,717.33 37,787 37,769 38,075 1,805
2 days ago 2024-10-01 99.2 1,717.34 37,805 37,787 38,075 1,806
1 week ago 2024-09-26 99.1 1,717.32 37,769 37,751 38,075 1,805
1 month ago 2024-09-03 85.9 1,714.46 32,735 32,717 38,075 1,707
3 months ago 2024-07-03 86.6 1,714.62 33,008 32,990 38,075 1,713
6 months ago 2024-04-03 60.4 1,708.21 23,031 23,013 38,075 1,380
1 year ago 2023-10-03 64.1 1,709.21 24,439 24,421 38,075 1,435
*

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 2024-10-03 05:30 1,717.31 1,717.50 -0.19
1 hour prior 2024-10-03 04:30 1,717.31 1,717.50 -0.19
2 hours prior 2024-10-03 03:30 1,717.31 1,717.50 -0.19
6 hours prior 2024-10-02 23:30 1,717.32 1,717.50 -0.18
12 hours prior 2024-10-02 17:30 1,717.33 1,717.50 -0.17
24 hours prior 2024-10-02 05:30 1,717.32 1,717.50 -0.18
48 hours prior 2024-10-01 05:30 1,717.33 1,717.50 -0.17
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1966-01-01
Vertical datum NGVD29
Dead pool elevation 1,662.50 ft above NGVD29
Service spillway crest elevation 1,717.50 ft above NGVD29
Emergency spillway crest elevation 1,726.00 ft above NGVD29
Top of dam elevation 1,740.00 ft above NGVD29
Conservation pool elevation 1,717.50 ft above NGVD29
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

2006-08-01 (source: TWDB) : GIS Data
Data Source USGS:08140770

Lake Location