6/9/2025

10-Day General Northern California Precipitation Forecast:

The weather forecast for the next ten days is sunny with highs ranging from the upper 80's to mid 90's.

From CDEC: Precipitation to date for water year 2024-2025 - as of 6/9/2025:

Northern Sierra Precipitation: 8-Station Index: 54.9" = 106% of average for this date

San Joaquin Precipitation: 5-Station Index: 26.3" = 68% of average for this date

Tulare Basin Precipitation: 6-Station Index: 22.8" = 83% of average for this date

From CDEC: Average Statewide Snow Water Content Equivalents as of 6/9/2025:

North: 0.8" = 20% of normal for this date

Central: 0.3" = 5% of normal for this date

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

Statewide: 0.4" = 5% 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 6/10/2025 daily average flow was 8,073 cfs and the average flow is expected to remain relatively unchanged at 7,416 cfs through 6/14/2025.

Feather River (at Boyd's Landing)

As of 6/10/2025, the Feather River flow is 4,482 cfs and is expected to remain relatively unchanged at 5,240 cfs by 6/14/2025.

San Joaquin River (near Vernalis)

As of 6/10/2025, the San Joaquin River flow is 1,944 cfs and is expected to remain relatively unchanged at 1,894 cfs by 6/14/2025.

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

Posted: 06/03/2025 Delta Cross Channel gates will be open on Friday, June 6, 2025 at approximately 10:00 hrs. Gates will be closed on Monday, June 9, 2025 at approximately 10:00 hrs.

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 = 234.2008 uS/cm, Br = N/A mg/L. 10 days ago: EC = 317.3281 uS/cm, Br = N/A mg/L.

Jones: EC = 243 uS/cm, Br = N/A mg/L. 10 days ago: EC = 246 uS/cm, Br = N/A mg/L.

Clifton Court Forebay: EC = 218.6 uS/cm, Br = N/A mg/L. 10 days ago: EC = 239.5 uS/cm, Br = N/A mg/L.

Vernalis: EC = 261 uS/cm, Br = 0.0679 mg/L. 10 days ago: EC = 178 uS/cm, Br = 0.0573 mg/L.

Gianelli: EC = N/A uS/cm, Br = 0.1594 mg/L. 10 days ago: EC = N/A uS/cm, Br = 0.152 mg/L.

Organic Carbon, TOC and DOC:

Banks: TOC = 3 mg/L, DOC = 3.2 mg/L. 10 days ago: TOC = 3.6 mg/L, DOC = 3.6 mg/L.

Jones: TOC = 3.39 mg/L, DOC = 3.21 mg/L. 10 days ago: TOC = 3.29 mg/L, DOC = 3.1 mg/L.

Vernalis: TOC = 2.31 mg/L, DOC = 2.1 mg/L. 10 days ago: TOC = 2.25 mg/L, DOC = 2.17 mg/L.

Gianelli: TOC = 3.32 mg/L, DOC = 3.41 mg/L. 10 days ago: TOC = 3.27 mg/L, DOC = 3.33 mg/L.

Daily Average Pumping: 5/30 through 6/8

Banks Pumping Plant ... ranged between 541 cfs and 3,044 cfs over the time period. The 6/8 average was 2,746 cfs.

Jones Pumping Plant ... ranged between 2,687 cfs and 3,437 cfs over the time period. The 6/8 average was 2,704 cfs.

Gianelli Pumping Plant ... discharge generation (San Luis Reservoir water moving out of the reservoir into O'Neill Forebay) ranged between 2,423 cfs and 7,186 cfs over the time period. The 6/8 average was 3,588 cfs.
Discharge pumping (O'Neill Forebay water moving into San Luis Reservoir) ranged between zero cfs and zero cfs over the time period. The 6/8 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 602 cfs over the time period. The 6/8 average was 111 cfs.
Discharge pumping (DMC water moving into O'Neill Forebay) ranged between zero cfs and 1,455 cfs over the time period. The 6/8 average was 922 cfs.

Dos Amigos Pumping Plant ... ranged between 5,528 cfs and 8,691 cfs over the time period. The 6/8 average was 5,528 cfs.

South Bay Pumping Plant ... ranged between 195 cfs and 285 cfs over the time period. The 6/8 average was 239 cfs.

Barker Slough Pumping Plant ... ranged between 58 cfs and 88 cfs over the time period. The 6/8 average was 85 cfs.

Status of the Temporary Barriers as of 6/10/2025

Middle River Barrier

Mobilization to the site occurred on April 30. In-water work to construct the weir started on May 5 at 10:30 a.m. and was completed on May 9 at 9:30 a.m. Five of the six flap gates were untied on May 22 at 10:30 a.m., thus starting intermediate culvert operations. The remaining flap gate will remain tied open until further notice.

Old River near Tracy Barrier

Mobilization to the site occurred on April 30. In-water work started on May 1 at 10 a.m. Currently, the contractor is building the boat ramp. The barrier is scheduled to be closed on May 22. Eight of the nine flap gates will be untied upon closure. The remaining flap gate will remain tied open until further notice. Boat portage will be available upon closure and provided daily including holidays from 8 a.m. to 6 p.m. Monday to Friday and from 7 a.m. to 7 p.m. on weekends.