Red Bluff Reservoir: 45.6% full as of 2026-11-02

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 2026-11-02 45.6 2,814.70 66,167 66,167 145,165 4,519
Yesterday 2026-11-01 45.7 2,814.73 66,300 66,300 145,165 4,525
2 days ago 2026-10-31 45.9 2,814.79 66,565 66,565 145,165 4,537
1 week ago 2026-10-26 45.4 2,814.65 65,946 65,946 145,165 4,509
1 month ago 2026-10-02 45.9 2,814.82 66,698 66,698 145,165 4,543
3 months ago 2026-08-02 48.1 2,815.51 69,862 69,862 145,165 4,682
6 months ago 2026-05-02 54.0 2,817.28 78,428 78,428 145,165 5,035
1 year ago 2025-11-02 50.7 2,816.28 73,580 73,580 145,165 4,836
*

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 2026-11-02 00:15 2,814.70 2,828.10 -13.40
1 hour prior 2026-11-01 23:15 2,814.70 2,828.10 -13.40
2 hours prior 2026-11-01 22:15 2,814.69 2,828.10 -13.41
6 hours prior 2026-11-01 18:15 2,814.72 2,828.10 -13.38
12 hours prior 2026-11-01 12:15 2,814.73 2,828.10 -13.37
24 hours prior 2026-11-01 00:15 2,814.77 2,828.10 -13.33
48 hours prior 2026-10-31 00:15 2,814.80 2,828.10 -13.30
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1936-01-01
Vertical datum
Start date: 2022-09-13 		NAVD88
Vertical datum
Start date to end date: 1999-04-17 to 2022-09-12 		NGVD29
Service spillway crest elevation
Start date: 2022-09-13 		2,828.10 ft above NAVD88
Service spillway crest elevation
End date: 2022-09-12 		2,827.40 ft above NGVD29
Top of gate elevation
Start date: 2022-09-13 		2,843.10 ft above NAVD88
Top of gate elevation
End date: 2022-09-12 		2,842.40 ft above NGVD29
Emergency spillway crest elevation
Start date: 2022-09-13 		2,846.10 ft above NAVD88
Emergency spillway crest elevation
End date: 2022-09-12 		2,845.40 ft above NGVD29
Top of dam elevation
Start date: 2022-09-13 		2,857.10 ft above NAVD88
Top of dam elevation
End date: 2022-09-12 		2,856.40 ft above NGVD29
Conservation pool elevation
Start date: 2022-09-13 		2,828.10 ft above NAVD88
Conservation pool elevation
End date: 2022-09-12 		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
Data Source USGS:08410000
USGS Monitoring Location USGS:08410000

Lake Location