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 is 89.4% full as of 2016-05-24

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, while 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.

Date Percent Full Mean Water Level
(ft)
Reservoir Storage
(acre-ft)
Conservation Storage
(acre-ft)
Conservation Capacity
(acre-ft)
Surface Area
(acres)
Today 2016-05-24 89.4 2,825.18 135,046 135,046 151,110 - n.a. -
Yesterday 2016-05-23 89.4 2,825.19 135,115 135,115 151,110 - n.a. -
2 days ago 2016-05-22 89.5 2,825.20 135,184 135,184 151,110 - n.a. -
1 week ago 2016-05-17 89.1 2,825.12 134,631 134,631 151,110 - n.a. -
1 month ago 2016-04-24 91.9 2,825.73 138,853 138,853 151,110 - n.a. -
3 months ago 2016-02-24 90.4 2,825.40 136,567 136,567 151,110 - n.a. -
6 months ago 2015-11-24 88.9 2,825.07 134,285 134,285 151,110 - n.a. -
1 year ago 2015-05-24 78.8 2,822.81 119,041 119,041 151,110 - 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 2016-05-24 13:15 2,825.21 2,827.4 -2.2 below flood pool
1 hour prior 2016-05-24 12:15 2,825.19 2,827.4 -2.2 below flood pool
2 hours prior 2016-05-24 11:15 2,825.19 2,827.4 -2.2 below flood pool
6 hours prior 2016-05-24 07:15 2,825.18 2,827.4 -2.2 below flood pool
12 hours prior 2016-05-24 01:15 2,825.17 2,827.4 -2.2 below flood pool
24 hours prior 2016-05-23 13:15 2,825.20 2,827.4 -2.2 below flood pool
48 hours prior 2016-05-22 13:15 2,825.20 2,827.4 -2.2 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 2827.4 ft above NGVD29
Conservation pool elevation 2827.4 ft above NGVD29
Top of flood gate elevation 2842.4 ft above NGVD29
Emergency spillway crest elevation 2845.4 ft above NGVD29
Top of dam elevation 2856.4 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