Red Bluff Reservoir: 46.3% full as of 2026-10-07

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 2026-10-07 46.3 2,814.92 67,140 67,140 145,165 4,563
Yesterday 2026-10-06 46.3 2,814.92 67,140 67,140 145,165 4,563
2 days ago 2026-10-05 46.2 2,814.91 67,095 67,095 145,165 4,561
1 week ago 2026-09-30 45.7 2,814.73 66,300 66,300 145,165 4,525
1 month ago 2026-09-07 45.1 2,814.53 65,415 65,415 145,165 4,484
3 months ago 2026-07-07 49.6 2,815.95 71,987 71,987 145,165 4,770
6 months ago 2026-04-07 57.0 2,818.12 82,808 82,808 145,165 5,198
1 year ago 2025-10-07 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 2026-10-07 00:15 2,814.92 2,828.10 -13.18
1 hour prior 2026-10-06 23:15 2,814.92 2,828.10 -13.18
2 hours prior 2026-10-06 22:15 2,814.93 2,828.10 -13.17
6 hours prior 2026-10-06 18:15 2,814.94 2,828.10 -13.16
12 hours prior 2026-10-06 12:15 2,814.92 2,828.10 -13.18
24 hours prior 2026-10-06 00:15 2,814.91 2,828.10 -13.19
48 hours prior 2026-10-05 00:15 2,814.91 2,828.10 -13.19
*

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