8/12/2024

10-Day General Northern California Precipitation Forecast:

The weather forecast for the next ten days is sunny with temperatures ranging from the high 80's to high 90's

From CDEC: Precipitation to date for water year 2023-2024 - as of 8/12/2024:

Northern Sierra Precipitation: 8-Station Index: 47.3" = 90% of average for this date

San Joaquin Precipitation: 5-Station Index: 33" = 83% of average for this date

Tulare Basin Precipitation: 6-Station Index: 22.6" = 81% of average for this date

From CDEC: Average Statewide Snow Water Content Equivalents as of 8/12/2024:

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 8/12/2024 daily average flow was 21,500 cfs and the average flow is expected to increase slightly to 23,000 cfs through 8/17/2024.

Feather River (at Boyd's Landing)

As of 8/12/2024, the Feather River flow is 9,085 cfs and is expected to remain relatively unchanged at 9,138 cfs by 8/17/2024.

San Joaquin River (near Vernalis)

As of 8/12/2024, the San Joaquin River flow is 959 cfs and is expected to remain relatively unchanged at 1,040 cfs by 8/17/2024.

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

Posted: 06/18/2024

Gates will undergo testing on Friday, June 21 between 07:00 hrs and 14:00 hrs. Gates will be open following gate testing.

Gates will undergo testing on Monday, June 24 between 08:00 hrs and 10:00 hrs. Gates will be open following gate testing.

Gates will undergo testing on Tuesday, June 25 between and 10:00 hrs. Gates will be open following 08:00 hrs gate testing.

Gates will remain open 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 = N/A uS/cm, Br = N/A mg/L. 10 days ago: EC = N/A uS/cm, Br = N/A mg/L.

Jones: EC = 210 uS/cm, Br = 0.0336 mg/L. 10 days ago: EC = 210 uS/cm, Br = 0.0243 mg/L.

Clifton Court Forebay: EC = 178.2 uS/cm, Br = N/A mg/L. 10 days ago: EC = 191.8 uS/cm, Br = N/A mg/L.

Vernalis: EC = 397 uS/cm, Br = N/A mg/L. 10 days ago: EC = 381 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 = N/A mg/L, DOC = N/A mg/L. 10 days ago: TOC = N/A mg/L, DOC = N/A mg/L.

Jones: TOC = 2.3 mg/L, DOC = 2.32 mg/L. 10 days ago: TOC = 2.61 mg/L, DOC = 2.51 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 = 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: 8/2 through 8/11

Banks Pumping Plant ... ranged between 4,919 cfs and 7,067 cfs over the time period. The 8/11 average was 4,945 cfs.

Jones Pumping Plant ... ranged between 3,493 cfs and 4,198 cfs over the time period. The 8/11 average was 4,198 cfs.

Gianelli Pumping Plant ... discharge generation (San Luis Reservoir water moving out of the reservoir into O'Neill Forebay) ranged between 1,321 cfs and 2,887 cfs over the time period. The 8/11 average was 1,327 cfs. Discharge pumping (O'Neill Forebay water moving into San Luis Reservoir) ranged between 993 cfs and 3,760 cfs over the time period. The 8/11 average was 2,499 cfs.

O'Neill Pumping Plant (Federal CVP) ... discharge generation (O'Neill Forebay water moving into the DMC) varied between zero cfs and 111 cfs over the time period. The 8/11 average was zero cfs. Discharge pumping (DMC water moving into O'Neill Forebay) ranged between 639 cfs and 1,618 cfs over the time period. The 8/11 average was 1,618 cfs.

Dos Amigos Pumping Plant ... ranged between 3,462 cfs and 6,974 cfs over the time period. The 8/11 average was 4,961 cfs.

South Bay Pumping Plant ... ranged between 122 cfs and 163 cfs over the time period. The 8/11 average was 134 cfs.

Barker Slough Pumping Plant ... ranged between 59 cfs and 82 cfs over the time period. The 8/11 average was 59 cfs.

Status of the Temporary Barriers as of 8/12/2024

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.