Choke Canyon Reservoir: 32.4% full as of 2022-11-27

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)
Most recent 2022-11-27 32.4 197.00 214,890 214,889 662,820 13,035
1 day prior 2022-11-26 32.3 196.93 213,979 213,978 662,820 13,002
2 days prior 2022-11-25 32.4 196.97 214,500 214,499 662,820 13,021
1 week prior 2022-11-20 32.3 196.93 213,979 213,978 662,820 13,002
1 month prior 2022-10-27 33.0 197.30 218,822 218,821 662,820 13,179
3 months prior 2022-08-27 34.3 197.93 227,219 227,218 662,820 13,479
6 months prior 2022-05-27 38.7 200.00 256,259 256,258 662,820 14,676
1 year prior 2021-11-27 44.6 202.55 295,432 295,431 662,820 15,966
*

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 2022-11-28 01:15 197.01 220.50 -23.49
1 hour prior 2022-11-28 00:15 197.01 220.50 -23.49
2 hours prior 2022-11-27 23:15 197.01 220.50 -23.49
6 hours prior 2022-11-27 19:15 197.02 220.50 -23.48
12 hours prior 2022-11-27 13:15 197.02 220.50 -23.48
24 hours prior 2022-11-27 01:15 197.01 220.50 -23.49
48 hours prior 2022-11-26 01:15 196.89 220.50 -23.61
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1982-01-01
Gauge USGS:08206900
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

Lake Location