Red Bluff Reservoir: 44.6% full as of 2026-09-26

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 2026-09-26 44.6 2,814.38 64,752 64,752 145,165 4,454
Yesterday 2026-09-25 44.6 2,814.37 64,708 64,708 145,165 4,452
2 days ago 2026-09-24 44.5 2,814.34 64,575 64,575 145,165 4,446
1 week ago 2026-09-19 44.5 2,814.34 64,575 64,575 145,165 4,446
1 month ago 2026-08-26 46.2 2,814.90 67,051 67,051 145,165 4,559
3 months ago 2026-06-26 50.3 2,816.17 73,049 73,049 145,165 4,814
6 months ago 2026-03-26 57.3 2,818.19 83,173 83,173 145,165 5,211
1 year ago 2025-09-26 50.6 2,816.25 73,435 73,435 145,165 4,830
*

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 2026-09-26 17:15 2,814.45 2,828.10 -13.65
1 hour prior 2026-09-26 16:15 2,814.45 2,828.10 -13.65
2 hours prior 2026-09-26 15:15 2,814.44 2,828.10 -13.66
6 hours prior 2026-09-26 11:15 2,814.41 2,828.10 -13.69
12 hours prior 2026-09-26 05:15 2,814.39 2,828.10 -13.71
24 hours prior 2026-09-25 17:15 2,814.38 2,828.10 -13.72
48 hours prior 2026-09-24 17:15 2,814.34 2,828.10 -13.76
*

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