Choke Canyon Reservoir: 26.7% full as of 2023-10-03

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 2023-10-03 26.7 193.91 176,874 176,873 662,820 11,585
1 day prior 2023-10-02 26.5 193.81 175,718 175,717 662,820 11,540
2 days prior 2023-10-01 26.5 193.83 175,949 175,948 662,820 11,548
1 week prior 2023-09-26 26.7 193.94 177,222 177,221 662,820 11,598
1 month prior 2023-09-03 27.8 194.52 184,022 184,021 662,820 11,851
3 months prior 2023-07-03 31.0 196.27 205,497 205,496 662,820 12,699
6 months prior 2023-04-03 29.8 195.64 197,593 197,592 662,820 12,394
1 year prior 2022-10-03 33.7 197.66 223,597 223,596 662,820 13,350
*

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 03:15 193.91 220.50 -26.59
1 hour prior 2023-10-04 02:15 193.91 220.50 -26.59
2 hours prior 2023-10-04 01:15 193.91 220.50 -26.59
6 hours prior 2023-10-03 21:15 193.90 220.50 -26.60
12 hours prior 2023-10-03 15:15 193.92 220.50 -26.58
24 hours prior 2023-10-03 03:15 193.91 220.50 -26.59
48 hours prior 2023-10-02 03:15 193.83 220.50 -26.67
*

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