12/29/2024

10-Day General Northern California Precipitation Forecast:

The weather forecast for the next ten days

From CDEC: Precipitation to date for water year 2023-2024 - as of 12/29/2024:

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

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

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

From CDEC: Average Statewide Snow Water Content Equivalents as of 12/29/2024:

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 12/29/2024 daily average flow was cfs and the average flow is expected to remain relatively unchanged at cfs through 1/3/2025.

Feather River (at Boyd's Landing)

As of 12/29/2024, the Feather River flow is cfs and is expected to remain relatively unchanged at cfs by 1/3/2025.

San Joaquin River (near Vernalis)

As of 12/29/2024, the San Joaquin River flow is cfs and is expected to remain relatively unchanged at cfs by 1/3/2025.

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

Posted: 11/21/2024

Delta Cross Channel gates are closed and will remain closed until further notice.

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 = 497.3656 uS/cm, Br = 0.5707 mg/L. 10 days ago: EC = 490.6064 uS/cm, Br = 0.5535 mg/L.

Jones: EC = 0 uS/cm, Br = N/A mg/L. 10 days ago: EC = 0 uS/cm, Br = N/A mg/L.

Clifton Court Forebay: EC = 526.4 uS/cm, Br = N/A mg/L. 10 days ago: EC = 470.7 uS/cm, Br = N/A mg/L.

Vernalis: EC = 660 uS/cm, Br = N/A mg/L. 10 days ago: EC = 702 uS/cm, Br = N/A mg/L.

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

Organic Carbon, TOC and DOC:

Banks: TOC = 4.23 mg/L, DOC = 3.98 mg/L. 10 days ago: TOC = 4.7 mg/L, DOC = 4.35 mg/L.

Jones: TOC = 5.54 mg/L, DOC = 5.31 mg/L. 10 days ago: TOC = N/A mg/L, DOC = N/A mg/L.

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

Gianelli: TOC = 3.46 mg/L, DOC = 3.38 mg/L. 10 days ago: TOC = 4.25 mg/L, DOC = 4.09 mg/L.

Daily Average Pumping: 12/19 through 12/28

Banks Pumping Plant ... ranged between 418 cfs and 534 cfs over the time period. The 12/28 average was 521 cfs.

Jones Pumping Plant ... ranged between 1,799 cfs and 1,829 cfs over the time period. The 12/28 average was 1,810 cfs.

Gianelli Pumping Plant ... discharge generation (San Luis Reservoir water moving out of the reservoir into O'Neill Forebay) ranged between zero cfs and 2,026 cfs over the time period. The 12/28 average was 1,410 cfs.
Discharge pumping (O'Neill Forebay water moving into San Luis Reservoir) ranged between zero cfs and 1,338 cfs over the time period. The 12/28 average was 1,316 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 12/28 average was zero cfs.
Discharge pumping (DMC water moving into O'Neill Forebay) ranged between 1,406 cfs and 1,532 cfs over the time period. The 12/28 average was 1,459 cfs.

Dos Amigos Pumping Plant ... ranged between 1,935 cfs and 2,390 cfs over the time period. The 12/28 average was 2,058 cfs.

South Bay Pumping Plant ... ranged between 75 cfs and 118 cfs over the time period. The 12/28 average was 91 cfs.

Barker Slough Pumping Plant ... ranged between 26 cfs and 33 cfs over the time period. The 12/28 average was 30 cfs.

Status of the Temporary Barriers as of 12/29/2024

Middle River Barrier

Mobilization started on April 29 at 3:00pm. In-water work started on May 1 at 9:00am. Turbidity curtains were installed and flap gates were tied open on May 1 at 9:00am. The weir was closed on May 9 at 1:00pm and all 6 flap gates remain tied open. All in-water work was completed on May 10 at 11:30am. All 6 flap gates were released to tidal operation on June 10.

Old River near Tracy Barrier

Mobilization started on May 1. In-water work started on May 3. The weir was fully closed on May 31 at 12:00pm and all 9 flap gates remain tied open. Construction was completed by June 5. All 9 flap gates were released to tidal operation on June 10. Boat portage is available daily from 8am to 6pm Monday to Friday and from 7am to 7pm on weekends.