Red Bluff Reservoir: 46.3% full as of 2026-10-09

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 2026-10-09 46.3 2,814.94 67,228 67,228 145,165 4,567
Yesterday 2026-10-08 46.3 2,814.94 67,228 67,228 145,165 4,567
2 days ago 2026-10-07 46.3 2,814.93 67,184 67,184 145,165 4,565
1 week ago 2026-10-02 45.9 2,814.81 66,653 66,653 145,165 4,541
1 month ago 2026-09-09 44.8 2,814.43 64,973 64,973 145,165 4,464
3 months ago 2026-07-09 49.5 2,815.91 71,794 71,794 145,165 4,762
6 months ago 2026-04-09 56.8 2,818.05 82,443 82,443 145,165 5,184
1 year ago 2025-10-09 50.6 2,816.26 73,484 73,484 145,165 4,832
*

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 2026-10-09 05:15 2,814.94 2,828.10 -13.16
1 hour prior 2026-10-09 04:15 2,814.94 2,828.10 -13.16
2 hours prior 2026-10-09 03:15 2,814.94 2,828.10 -13.16
6 hours prior 2026-10-08 23:15 2,814.94 2,828.10 -13.16
12 hours prior 2026-10-08 17:15 2,814.95 2,828.10 -13.15
24 hours prior 2026-10-08 05:15 2,814.93 2,828.10 -13.17
48 hours prior 2026-10-07 05:15 2,814.93 2,828.10 -13.17
*

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