Lake Coleman: 74.4% full as of 2022-11-29

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 2022-11-29 74.4 1,711.80 28,347 28,329 38,075 1,578
Yesterday 2022-11-28 74.4 1,711.80 28,347 28,329 38,075 1,578
2 days ago 2022-11-27 74.4 1,711.80 28,347 28,329 38,075 1,578
1 week ago 2022-11-22 73.6 1,711.60 28,033 28,015 38,075 1,568
1 month ago 2022-10-29 74.7 1,711.86 28,442 28,424 38,075 1,581
3 months ago 2022-08-29 77.2 1,712.47 29,417 29,399 38,075 1,612
6 months ago 2022-05-29 86.6 1,714.60 32,974 32,956 38,075 1,712
1 year ago 2021-11-29 95.1 1,716.47 36,245 36,227 38,075 1,779
*

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 2022-11-29 17:30 1,711.80 1,717.50 -5.70
1 hour prior 2022-11-29 16:30 1,711.82 1,717.50 -5.68
2 hours prior 2022-11-29 15:30 1,711.80 1,717.50 -5.70
6 hours prior 2022-11-29 11:30 1,711.80 1,717.50 -5.70
12 hours prior 2022-11-29 05:30 1,711.79 1,717.50 -5.71
24 hours prior 2022-11-28 17:30 1,711.80 1,717.50 -5.70
48 hours prior 2022-11-27 17:30 1,711.81 1,717.50 -5.69
*

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