Choke Canyon Reservoir: 21.1% full as of 2024-07-24

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 2024-07-24 21.1 190.51 140,062 140,061 662,820 10,126
Yesterday 2024-07-23 21.1 190.52 140,163 140,162 662,820 10,130
2 days ago 2024-07-22 21.1 190.52 140,163 140,162 662,820 10,130
1 week ago 2024-07-17 21.4 190.67 141,687 141,686 662,820 10,188
1 month ago 2024-06-24 22.0 191.05 145,589 145,588 662,820 10,346
3 months ago 2024-04-24 23.0 191.73 152,716 152,715 662,820 10,617
6 months ago 2024-01-24 24.2 192.45 160,464 160,463 662,820 10,906
1 year ago 2023-07-24 29.8 195.64 197,593 197,592 662,820 12,394
*

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 2024-07-24 09:15 190.51 220.50 -29.99
1 hour prior 2024-07-24 08:15 190.51 220.50 -29.99
2 hours prior 2024-07-24 07:15 190.51 220.50 -29.99
6 hours prior 2024-07-24 03:15 190.51 220.50 -29.99
12 hours prior 2024-07-23 21:15 190.49 220.50 -30.01
24 hours prior 2024-07-23 09:15 190.53 220.50 -29.97
48 hours prior 2024-07-22 09:15 - n.a. - - n.a. - - n.a. -
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1982-01-01
Vertical datum NGVD29
Dead pool elevation 136.40 ft above NGVD29
Service spillway crest elevation 199.50 ft above NGVD29
Top of flood gate elevation 223.20 ft above NGVD29
Emergency spillway crest elevation 223.20 ft above NGVD29
Maximum design elevation 232.18 ft above NGVD29
Top of dam elevation 241.14 ft above NGVD29
Conservation pool elevation 220.50 ft above NGVD29
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

1983-01-01 (source: USBR)
1993-03-01 (source: TWDB) : GIS Data
2012-06-01 (source: TWDB) : GIS Data
Data Source USGS:08206900

Lake Location