Red Bluff Reservoir: 45.9% full as of 2026-10-31

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 2026-10-31 45.9 2,814.80 66,609 66,609 145,165 4,539
Yesterday 2026-10-30 45.8 2,814.76 66,432 66,432 145,165 4,531
2 days ago 2026-10-29 45.5 2,814.68 66,079 66,079 145,165 4,515
1 week ago 2026-10-24 45.8 2,814.78 66,521 66,521 145,165 4,535
1 month ago 2026-09-30 45.7 2,814.73 66,300 66,300 145,165 4,525
3 months ago 2026-07-31 48.2 2,815.54 70,007 70,007 145,165 4,688
6 months ago 2026-04-30 53.7 2,817.18 77,926 77,926 145,165 5,015
1 year ago 2025-10-31 50.8 2,816.30 73,677 73,677 145,165 4,840
*

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 2026-10-31 10:15 2,814.79 2,828.10 -13.31
1 hour prior 2026-10-31 09:15 2,814.79 2,828.10 -13.31
2 hours prior 2026-10-31 08:15 2,814.80 2,828.10 -13.30
6 hours prior 2026-10-31 04:15 2,814.80 2,828.10 -13.30
12 hours prior 2026-10-30 22:15 2,814.81 2,828.10 -13.29
24 hours prior 2026-10-30 10:15 2,814.76 2,828.10 -13.34
48 hours prior 2026-10-29 10:15 2,814.67 2,828.10 -13.43
*

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