9/8/2025

10-Day General Northern California Precipitation Forecast:

The weather forecast for the next ten days is mostly sunny conditions with highs in the upper 70's to mid 90's.

From CDEC: Precipitation to date for water year 2024-2025 - as of 9/8/2025:

Northern Sierra Precipitation: 8-Station Index: 56.2" = 106% of average for this date

San Joaquin Precipitation: 5-Station Index: 31.6" = 80% of average for this date

Tulare Basin Precipitation: 6-Station Index: 23.3" = 83% of average for this date

From CDEC: Average Statewide Snow Water Content Equivalents as of 9/8/2025:

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 9/8/2025 daily average flow was 15,473 cfs and the average flow is expected to remain relatively unchanged at 14,786 cfs through 9/13/2025.

Feather River (at Boyd's Landing)

As of 9/8/2025, the Feather River flow is 7,011 cfs and is expected to decrease to 6,553 cfs by 9/13/2025.

San Joaquin River (near Vernalis)

As of 9/8/2025, the San Joaquin River flow is 681 cfs and is expected to increase to 790 cfs by 9/13/2025.

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 = 374.4367 uS/cm, Br = N/A mg/L. 10 days ago: EC = 304.373 uS/cm, Br = N/A mg/L.

Jones: EC = 357 uS/cm, Br = 0.2037 mg/L. 10 days ago: EC = 288 uS/cm, Br = 0.131 mg/L.

Clifton Court Forebay: EC = 379.1 uS/cm, Br = N/A mg/L. 10 days ago: EC = 246.6 uS/cm, Br = N/A mg/L.

Vernalis: EC = 510 uS/cm, Br = N/A mg/L. 10 days ago: EC = 469 uS/cm, Br = 0.1901 mg/L.

Gianelli: EC = N/A uS/cm, Br = 0.1855 mg/L. 10 days ago: EC = N/A uS/cm, Br = 0.1031 mg/L.

Organic Carbon, TOC and DOC:

Banks: TOC = 2.57 mg/L, DOC = 2.46 mg/L. 10 days ago: TOC = N/A mg/L, DOC = N/A mg/L.

Jones: TOC = 2.24 mg/L, DOC = 2.03 mg/L. 10 days ago: TOC = 2.14 mg/L, DOC = 2.11 mg/L.

Vernalis: TOC = 2.74 mg/L, DOC = 2.52 mg/L. 10 days ago: TOC = 4.14 mg/L, DOC = 3.46 mg/L.

Gianelli: TOC = 2.45 mg/L, DOC = 2.26 mg/L. 10 days ago: TOC = 2.57 mg/L, DOC = 2.38 mg/L.

Daily Average Pumping: 8/29 through 9/7

Banks Pumping Plant ... ranged between 7,094 cfs and 7,097 cfs over the time period. The 9/7 average was 7,094 cfs.

Jones Pumping Plant ... ranged between 4,113 cfs and 4,275 cfs over the time period. The 9/7 average was 4,212 cfs.

Gianelli Pumping Plant ... discharge generation (San Luis Reservoir water moving out of the reservoir into O'Neill Forebay) ranged between zero cfs and zero cfs over the time period. The 9/7 average was zero cfs.
Discharge pumping (O'Neill Forebay water moving into San Luis Reservoir) ranged between 2,678 cfs and 5,108 cfs over the time period. The 9/7 average was 4,955 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 9/7 average was zero cfs.
Discharge pumping (DMC water moving into O'Neill Forebay) ranged between 1,459 cfs and 1,973 cfs over the time period. The 9/7 average was 1,973 cfs.

Dos Amigos Pumping Plant ... ranged between 4,186 cfs and 6,041 cfs over the time period. The 9/7 average was 4,277 cfs.

South Bay Pumping Plant ... ranged between 155 cfs and 300 cfs over the time period. The 9/7 average was 210 cfs.

Barker Slough Pumping Plant ... ranged between 42 cfs and 72 cfs over the time period. The 9/7 average was 49 cfs.

Status of the Temporary Barriers as of 9/8/2025

Middle River Barrier

Mobilization to the site occurred on April 30. In-water work to construct the weir started on May 5 at 10:30am and was completed on May 9 at 9:30am. In-water work was completed on May 9 at 3:30pm. Five of the six flap gates were untied on May 22 at 10:30am, thus starting intermediate culvert operations. The remaining flap gate was released on July 31 at 7:30am. The weir elevation was raised from 3.3’ NAVD 88 to 4.3’ NAVD 88 on August 12 at 12:30pm.

Old River near Tracy Barrier

Mobilization to the site occurred on April 30. In-water work started on May 1 at 10:00am and the barrier was completed on May 22 at 5:00pm. Eight of the nine flap gates were released to tidal operation on May 22 at 5:00pm. In-water work was completed on May 23 at 12:00pm. The remaining flap gate was released on July 31 at 8:30am. Boat portage is available daily including holidays from 8am to 6pm Monday to Friday and from 7am to 7pm on weekends.