6/30/2025

10-Day General Northern California Precipitation Forecast:

The weather forecast for the next ten days is sunny with high's in the upper 80's to mid 90's.

From CDEC: Precipitation to date for water year 2024-2025 - as of 6/30/2025:

Northern Sierra Precipitation: 8-Station Index: 54.9" = 105% of average for this date

San Joaquin Precipitation: 5-Station Index: 26.3" = 67% of average for this date

Tulare Basin Precipitation: 6-Station Index: 22.9" = 82% of average for this date

From CDEC: Average Statewide Snow Water Content Equivalents as of 6/28/2025:

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 6/30/2025 daily average flow was 16,679 cfs and the average flow is expected to increase to 20,837 cfs through 7/5/2025.

Feather River (at Boyd's Landing)

As of 6/30/2025, the Feather River flow is 5,880 cfs and is expected to increase to 9,773 cfs by 7/5/2025.

San Joaquin River (near Vernalis)

As of 6/30/2025, the San Joaquin River flow is 1,080 cfs and is expected to remain relatively unchanged at 1,029 cfs by 7/5/2025.

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 = 224.6694 uS/cm, Br = 0.0519 mg/L. 10 days ago: EC = 219.8187 uS/cm, Br = 0.0528 mg/L.

Jones: EC = 215 uS/cm, Br = N/A mg/L. 10 days ago: EC = 204 uS/cm, Br = N/A mg/L.

Clifton Court Forebay: EC = 216.9 uS/cm, Br = N/A mg/L. 10 days ago: EC = 211.3 uS/cm, Br = N/A mg/L.

Vernalis: EC = 342 uS/cm, Br = 0.0698 mg/L. 10 days ago: EC = 218 uS/cm, Br = 0.0571 mg/L.

Gianelli: EC = N/A uS/cm, Br = 0.1596 mg/L. 10 days ago: EC = N/A uS/cm, Br = 0.16 mg/L.

Organic Carbon, TOC and DOC:

Banks: TOC = 3.21 mg/L, DOC = 2.87 mg/L. 10 days ago: TOC = 3.28 mg/L, DOC = 3.17 mg/L.

Jones: TOC = 3.55 mg/L, DOC = 3.4 mg/L. 10 days ago: TOC = 4.15 mg/L, DOC = 3.86 mg/L.

Vernalis: TOC = 2.55 mg/L, DOC = 2.3 mg/L. 10 days ago: TOC = 3.03 mg/L, DOC = 2.96 mg/L.

Gianelli: TOC = N/A mg/L, DOC = N/A mg/L. 10 days ago: TOC = N/A mg/L, DOC = N/A mg/L.

Daily Average Pumping: 6/20 through 6/29

Banks Pumping Plant ... ranged between 611 cfs and 1,915 cfs over the time period. The 6/29 average was 969 cfs.

Jones Pumping Plant ... ranged between 3,158 cfs and 4,211 cfs over the time period. The 6/29 average was 4,211 cfs.

Gianelli Pumping Plant ... discharge generation (San Luis Reservoir water moving out of the reservoir into O'Neill Forebay) ranged between 2,759 cfs and 7,369 cfs over the time period. The 6/29 average was 2,759 cfs.
Discharge pumping (O'Neill Forebay water moving into San Luis Reservoir) ranged between zero cfs and zero cfs over the time period. The 6/29 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 475 cfs over the time period. The 6/29 average was 208 cfs.
Discharge pumping (DMC water moving into O'Neill Forebay) ranged between 277 cfs and 1,196 cfs over the time period. The 6/29 average was 1,196 cfs.

Dos Amigos Pumping Plant ... ranged between 5,252 cfs and 8,162 cfs over the time period. The 6/29 average was 5,252 cfs.

South Bay Pumping Plant ... ranged between 137 cfs and 285 cfs over the time period. The 6/29 average was 137 cfs.

Barker Slough Pumping Plant ... ranged between 50 cfs and 73 cfs over the time period. The 6/29 average was 56 cfs.

Status of the Temporary Barriers as of 6/30/2025

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 will remain tied open until the water temperature at Mossdale is reached. See note on water temperature below.

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 will remain tied open until the water temperature at Mossdale is reached. See note below on water temperature. Boat portage is available daily including holidays from 8am to 6pm Monday to Friday and from 7am to 7pm on weekends.