Red Bluff Reservoir: 46.4% full as of 2026-10-17

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 2026-10-17 46.4 2,814.97 67,361 67,361 145,165 4,574
Yesterday 2026-10-16 46.5 2,814.99 67,449 67,449 145,165 4,578
2 days ago 2026-10-15 46.6 2,815.03 67,626 67,626 145,165 4,586
1 week ago 2026-10-10 46.3 2,814.94 67,228 67,228 145,165 4,567
1 month ago 2026-09-17 44.5 2,814.35 64,619 64,619 145,165 4,448
3 months ago 2026-07-17 48.5 2,815.63 70,442 70,442 145,165 4,706
6 months ago 2026-04-17 55.7 2,817.74 80,827 80,827 145,165 5,124
1 year ago 2025-10-17 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 2026-10-17 16:15 2,814.98 2,828.10 -13.12
1 hour prior 2026-10-17 15:15 2,814.98 2,828.10 -13.12
2 hours prior 2026-10-17 14:15 2,814.97 2,828.10 -13.13
6 hours prior 2026-10-17 10:15 2,814.97 2,828.10 -13.13
12 hours prior 2026-10-17 04:15 2,814.97 2,828.10 -13.13
24 hours prior 2026-10-16 16:15 2,814.98 2,828.10 -13.12
48 hours prior 2026-10-15 16:15 2,815.04 2,828.10 -13.06
*

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