Red Bluff Reservoir: 44.7% full as of 2026-09-13

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 2026-09-13 44.7 2,814.41 64,885 64,885 145,165 4,460
Yesterday 2026-09-12 44.7 2,814.42 64,929 64,929 145,165 4,462
2 days ago 2026-09-11 44.7 2,814.42 64,929 64,929 145,165 4,462
1 week ago 2026-09-06 45.3 2,814.60 65,725 65,725 145,165 4,499
1 month ago 2026-08-13 46.6 2,815.03 67,626 67,626 145,165 4,586
3 months ago 2026-06-13 51.2 2,816.43 74,305 74,305 145,165 4,866
6 months ago 2026-03-13 57.2 2,818.15 82,964 82,964 145,165 5,203
1 year ago 2025-09-13 50.1 2,816.09 72,663 72,663 145,165 4,798
*

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 2026-09-13 19:15 2,814.40 2,828.10 -13.70
1 hour prior 2026-09-13 18:15 2,814.41 2,828.10 -13.69
2 hours prior 2026-09-13 17:15 2,814.42 2,828.10 -13.68
6 hours prior 2026-09-13 13:15 2,814.42 2,828.10 -13.68
12 hours prior 2026-09-13 07:15 2,814.40 2,828.10 -13.70
24 hours prior 2026-09-12 19:15 2,814.44 2,828.10 -13.66
48 hours prior 2026-09-11 19:15 2,814.44 2,828.10 -13.66
*

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