Recent changes

2013-08-05: The vertical datum for the reservoir gauge has previously been incorrect and was updated. Also, the conservation pool elevation was updated to 2827.4 ft above NGVD29 per the 2011 TWDB Hydrosurvey report.

Red Bluff Reservoir: 74.0% full as of 2021-09-25

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 2021-09-25 74.0 2,821.70 111,843 111,843 151,110 - n.a. -
Yesterday 2021-09-24 74.1 2,821.71 111,903 111,903 151,110 - n.a. -
2 days ago 2021-09-23 74.1 2,821.72 111,964 111,964 151,110 - n.a. -
1 week ago 2021-09-18 74.9 2,821.90 113,133 113,133 151,110 - n.a. -
1 month ago 2021-08-25 74.7 2,821.86 112,873 112,873 151,110 - n.a. -
3 months ago 2021-06-25 45.4 2,813.75 68,655 68,655 151,110 - n.a. -
6 months ago 2021-03-25 48.8 2,814.79 73,676 73,676 151,110 - n.a. -
1 year ago 2020-09-25 48.5 2,814.70 73,242 73,242 151,110 - n.a. -
*

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 2021-09-25 06:15 2,821.70 2,827.40 -5.70 below flood pool
1 hour prior 2021-09-25 05:15 2,821.70 2,827.40 -5.70 below flood pool
2 hours prior 2021-09-25 04:15 2,821.70 2,827.40 -5.70 below flood pool
6 hours prior 2021-09-25 00:15 2,821.71 2,827.40 -5.69 below flood pool
12 hours prior 2021-09-24 18:15 2,821.71 2,827.40 -5.69 below flood pool
24 hours prior 2021-09-24 06:15 2,821.70 2,827.40 -5.70 below flood pool
48 hours prior 2021-09-23 06:15 2,821.72 2,827.40 -5.68 below flood pool
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1936-01-01
Vertical datum NGVD29
Gauge USGS:08410000
Service spillway crest elevation 2,827.40 ft above NGVD29
Top of flood gate elevation 2,842.40 ft above NGVD29
Emergency spillway crest elevation 2,845.40 ft above NGVD29
Top of dam elevation 2,856.40 ft above NGVD29
Conservation pool elevation 2,827.40 ft above NGVD29
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

2011-11-01 (source: twdb) : GIS Data

Lake Location