Lake Coleman: 64.1% full as of 2023-10-04

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 2023-10-04 64.1 1,709.20 24,424 24,406 38,075 1,435
Yesterday 2023-10-03 64.1 1,709.21 24,439 24,421 38,075 1,435
2 days ago 2023-10-02 64.3 1,709.24 24,482 24,464 38,075 1,437
1 week ago 2023-09-27 64.7 1,709.36 24,655 24,637 38,075 1,443
1 month ago 2023-09-04 65.5 1,709.57 24,959 24,941 38,075 1,455
3 months ago 2023-07-04 72.5 1,711.34 27,627 27,609 38,075 1,554
6 months ago 2023-04-04 74.7 1,711.87 28,458 28,440 38,075 1,582
1 year ago 2022-10-04 75.6 1,712.09 28,807 28,789 38,075 1,594
*

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 2023-10-04 17:30 1,709.20 1,717.50 -8.30
1 hour prior 2023-10-04 16:30 1,709.20 1,717.50 -8.30
2 hours prior 2023-10-04 15:30 1,709.21 1,717.50 -8.29
6 hours prior 2023-10-04 11:30 1,709.20 1,717.50 -8.30
12 hours prior 2023-10-04 05:30 1,709.21 1,717.50 -8.29
24 hours prior 2023-10-03 17:30 1,709.22 1,717.50 -8.28
48 hours prior 2023-10-02 17:30 1,709.23 1,717.50 -8.27
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1966-01-01
Gauge USGS:08140770
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

Lake Location