Choke Canyon Reservoir: 22.7% full as of 2024-05-21

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 2024-05-21 22.7 191.49 150,179 150,178 662,820 10,521
Yesterday 2024-05-20 22.7 191.51 150,390 150,389 662,820 10,529
2 days ago 2024-05-19 22.8 191.55 150,811 150,810 662,820 10,544
1 week ago 2024-05-14 22.9 191.62 151,550 151,549 662,820 10,572
1 month ago 2024-04-21 23.2 191.81 153,566 153,565 662,820 10,650
3 months ago 2024-02-21 24.3 192.52 161,228 161,227 662,820 10,936
6 months ago 2023-11-21 25.3 193.10 167,644 167,643 662,820 11,196
1 year ago 2023-05-21 32.3 196.94 214,109 214,108 662,820 13,007
*

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 2024-05-21 07:15 191.50 220.50 -29.00
1 hour prior 2024-05-21 06:15 191.49 220.50 -29.01
2 hours prior 2024-05-21 05:15 191.50 220.50 -29.00
6 hours prior 2024-05-21 01:15 191.49 220.50 -29.01
12 hours prior 2024-05-20 19:15 191.49 220.50 -29.01
24 hours prior 2024-05-20 07:15 191.51 220.50 -28.99
48 hours prior 2024-05-19 07:15 191.53 220.50 -28.97
*

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