10/29/2025

10-Day General Northern California Precipitation Forecast:

The weather forecast for the next ten days is a mix of full sun and cloudy conditions with a chance for rain on 11/5.

From CDEC: Precipitation to date for water year 2024-2025 - as of 10/27/2025:

Northern Sierra Precipitation: 8-Station Index: 3.0" = 112% of average for this date

San Joaquin Precipitation: 5-Station Index: 2.6" = 133% of average for this date

Tulare Basin Precipitation: 6-Station Index: 2.4" = 206% of average for this date

From CDEC: Average Statewide Snow Water Content Equivalents as of 10/27/2025:

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 10/27/2025 daily average flow was cfs and the average flow is 16,058 expected to remain relatively unchanged at 17,405 cfs through 11/1/2025.

Feather River (at Boyd's Landing)

As of 10/27/2025, the Feather River flow is 2,908 cfs and is expected to remain relatively unchanged at 3,070 cfs by 11/1/2025.

San Joaquin River (near Vernalis)

As of 10/27/2025, the San Joaquin River flow is 1,508 cfs and is expected to increase to 1,901 cfs by 11/1/2025.

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: Recreation gate opening / Salinity.

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 = 536.7744 uS/cm, Br = 0.3817 mg/L. 10 days ago: EC = 699.5067 uS/cm, Br = 0.4949 mg/L.

Jones: EC = 383 uS/cm, Br = 0.36 mg/L. 10 days ago: EC = 493 uS/cm, Br = 0.3216 mg/L.

Clifton Court Forebay: EC = 475.1 uS/cm, Br = N/A mg/L. 10 days ago: EC = 608.7 uS/cm, Br = N/A mg/L.

Vernalis: EC = 341 uS/cm, Br = 0.1771 mg/L. 10 days ago: EC = 366 uS/cm, Br = 0.1172 mg/L.

Gianelli: EC = N/A uS/cm, Br = 0.2698 mg/L. 10 days ago: EC = N/A uS/cm, Br = 0.2193 mg/L.

Organic Carbon, TOC and DOC:

Banks: TOC = 2.63 mg/L, DOC = 2.38 mg/L. 10 days ago: TOC = 2.42 mg/L, DOC = 2.22 mg/L.

Jones: TOC = 2.79 mg/L, DOC = 2.66 mg/L. 10 days ago: TOC = 2.51 mg/L, DOC = 2.44 mg/L.

Vernalis: TOC = 3.14 mg/L, DOC = 2.94 mg/L. 10 days ago: TOC = 2.95 mg/L, DOC = 2.85 mg/L.

Gianelli: TOC = 2.98 mg/L, DOC = 2.93 mg/L. 10 days ago: TOC = 2.95 mg/L, DOC = 2.83 mg/L.

Daily Average Pumping: 10/17 through 10/26

Banks Pumping Plant ... ranged between 1,351 cfs and 4,088 cfs over the time period. The 10/26 average was 1,351 cfs.

Jones Pumping Plant ... ranged between 945 cfs and 2,262 cfs over the time period. The 10/26 average was 2,262 cfs.

Gianelli Pumping Plant ... discharge generation (San Luis Reservoir water moving out of the reservoir into O'Neill Forebay) ranged between zero cfs and 1,739 cfs over the time period. The 10/26 average was 1,739 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 10/26 average was zero cfs.

O'Neill Pumping Plant (Federal CVP) ... discharge generation (O'Neill Forebay water moving into the DMC) varied between zero cfs and 179 cfs over the time period. The 10/26 average was 179 cfs.
Discharge pumping (DMC water moving into O'Neill Forebay) ranged between zero cfs and 1,050 cfs over the time period. The 10/26 average was 1,050 cfs.

Dos Amigos Pumping Plant ... ranged between 3,065 cfs and 4,238 cfs over the time period. The 10/26 average was 3,065 cfs.

South Bay Pumping Plant ... ranged between 59 cfs and 184 cfs over the time period. The 10/26 average was 59 cfs.

Barker Slough Pumping Plant ... ranged between 28 cfs and 40 cfs over the time period. The 10/26 average was 28 cfs.

Status of the Temporary Barriers as of 10/27/2025

Middle River Barrier

The Middle River barrier gates are in full tidal operation from July 31. 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.