10/22/2025

10-Day General Northern California Precipitation Forecast:

The weather forecast for the next ten days is mostly cloudy with possible showers on Saturday and Monday. Highs will range from the mid 70's to mid 60's.

From CDEC: Precipitation to date for water year 2024-2025 - as of 10/20/2025:

Northern Sierra Precipitation: 8-Station Index: 1.7" = 83% of average for this date

San Joaquin Precipitation: 5-Station Index: 2.4" = 162% of average for this date

Tulare Basin Precipitation: 6-Station Index: 2.3" = 262% of average for this date

From CDEC: Average Statewide Snow Water Content Equivalents as of 10/20/2025:

North: 0" = 0% of normal for this date

Central: 0" = 0% of normal for this date

South: 0" = 0% of normal for this date

Statewide: 0" = 0% of normal for this date

River Flows (Current and estimated future flow rates from NOAA's California Nevada River Forecast Center and CDEC)

Sacramento River (I Street Bridge/ Freeport Bridge)

The 10/20/2025 daily average flow was 8,537 cfs and the average flow is expected to remain relatively unchanged at 8,205 cfs through 10/25/2025.

Feather River (at Boyd's Landing)

As of 10/20/2025, the Feather River flow is 3,152 cfs and is expected to remain relatively unchanged at 2,975 cfs by 10/25/2025.

San Joaquin River (near Vernalis)

As of 10/20/2025, the San Joaquin River flow is 2,046 cfs and is expected to increase to 2,736 cfs by 10/25/2025.

Latest Delta Cross Channel Gate Operation (From the USBR website)

Posted: 06/23/2025 Delta Cross Channel gates will remain open on Monday, June 23, 2025 at approximately 10:00 hrs. This will supersede the change order to close them at 10:00 hrs this morning.

Comment: Facility maintenance and gate testing, please use caution

Note 1: Gates may be operated/closed on short notice for fishery protection in the November to January timeframe.

Note 2: Gate operations may take approx 30 minutes to complete, so boats may not be permitted to pass through the gates until approx 30 minutes after the scheduled opening time. Boat passage may be cut off approximately 30 minutes prior to the scheduled closing time.

EC and Bromide:

Banks: EC = 665.623 uS/cm, Br = 0.4679 mg/L. 10 days ago: EC = 736.1025 uS/cm, Br = 0.5302 mg/L.

Jones: EC = 658 uS/cm, Br = N/A mg/L. 10 days ago: EC = 754 uS/cm, Br = 0.5708 mg/L.

Clifton Court Forebay: EC = 612.5 uS/cm, Br = N/A mg/L. 10 days ago: EC = 683.1 uS/cm, Br = N/A mg/L.

Vernalis: EC = 241 uS/cm, Br = N/A mg/L. 10 days ago: EC = 341 uS/cm, Br = N/A mg/L.

Gianelli: EC = N/A uS/cm, Br = 0.4953 mg/L. 10 days ago: EC = N/A uS/cm, Br = 0.1949 mg/L.

Organic Carbon, TOC and DOC:

Banks: TOC = 2.58 mg/L, DOC = 2.32 mg/L. 10 days ago: TOC = 2.36 mg/L, DOC = 2.14 mg/L.

Jones: TOC = 2.63 mg/L, DOC = 2.61 mg/L. 10 days ago: TOC = 2.12 mg/L, DOC = 2.03 mg/L.

Vernalis: TOC = 3.1 mg/L, DOC = 2.89 mg/L. 10 days ago: TOC = 2.5 mg/L, DOC = 2.41 mg/L.

Gianelli: TOC = 2.4 mg/L, DOC = 2.31 mg/L. 10 days ago: TOC = 2.91 mg/L, DOC = 2.85 mg/L.

Daily Average Pumping: 10/10 through 10/19

Banks Pumping Plant ... ranged between 2,021 cfs and 4,088 cfs over the time period. The 10/19 average was 4,088 cfs.

Jones Pumping Plant ... ranged between 869 cfs and 2,724 cfs over the time period. The 10/19 average was 967 cfs.

Gianelli Pumping Plant ... discharge generation (San Luis Reservoir water moving out of the reservoir into O'Neill Forebay) ranged between zero cfs and 2,663 cfs over the time period. The 10/19 average was zero cfs.
Discharge pumping (O'Neill Forebay water moving into San Luis Reservoir) ranged between zero cfs and 1,634 cfs over the time period. The 10/19 average was 1,634 cfs.

O'Neill Pumping Plant (Federal CVP) ... discharge generation (O'Neill Forebay water moving into the DMC) varied between zero cfs and zero cfs over the time period. The 10/19 average was zero cfs.
Discharge pumping (DMC water moving into O'Neill Forebay) ranged between zero cfs and zero cfs over the time period. The 10/19 average was zero cfs.

Dos Amigos Pumping Plant ... ranged between 1,659 cfs and 4,062 cfs over the time period. The 10/19 average was 3,762 cfs.

South Bay Pumping Plant ... ranged between 30 cfs and 183 cfs over the time period. The 10/19 average was 179 cfs.

Barker Slough Pumping Plant ... ranged between 35 cfs and 50 cfs over the time period. The 10/19 average was 39 cfs.

Status of the Temporary Barriers as of 10/20/2025

Middle River Barrier

The Middle River barrier gates are in full tidal operation. The weir elevation was raised by 1 foot on August 12. The barrier will be breached on November 5.

Old River near Tracy Barrier

The Old River near Tracy barrier gates are in full tidal operation. The barrier will be breached on October 28.