3/20/2023

10-Day General Northern California Precipitation Forecast:

As of this Monday morning, there is very low chance of showers today. Tomorrow there is going to be rain and thunderstorms followed by showers on Wednesday. For the remaining 7 days after that (3/23-3/30) It will be mostly cloudy with 50% possible light showers.

From CDEC: Precipitation to date for water year 2022-2023 - As of 3/20/2023:

Northern Sierra Precipitation: 8-Station Index: 56.2" = 136% of average for this date

San Joaquin Precipitation: 5-Station Index: 57.4" = 186% of average for this date

Tulare Basin Precipitation: 6-Station Index: 46.3" = 212% of average for this date

From CDEC: Average Statewide Snow Water Content Equivalents as of 3/20/2023:

North: 50.7" = 181% of normal for this date

Central: 58.6" = 229% of normal for this date

South: 57.8" = 278% of normal for this date

Statewide: 56.2" = 225% 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 3/20/2023 daily average flow is 76,697 cfs and is expected to slightly decrease to about 73,948 cfs by Saturday, 3/25/2023.

Feather River (at Boyd's Landing)

As of 3/20/2023, Feather River flow is 50,698 cfs and is expected to slightly keep increasing by tomorrow. This will be followed with a decrease to about 42,618 cfs by Saturday, 3/25/2023.

San Joaquin River (near Vernalis)

As of 3/20/2023, the San Joaquin River flow is 36,315 cfs with a stage reading of 29.6 putting it on the “danger” zone. The flow this is expected to stabilize to 35,737 cfs by early Friday and remind there until Saturday 3/25/2023.

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

Posted: 11/14/2022

Delta Cross Channel Gates will open on Friday, November 18, 2022, at approximately 1000 hrs and close on Monday, November 21, 2022, at approximately 1000 hrs.

Comment: Rio Vista requirement.

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 Pumping Plant, Jones Pumping Plant, Clifton Court Forebay (EC only), San Joaquin River at Vernalis, Gianelli Pumping Plant

Banks: EC = 188 uS/cm, Br = 0.03 mg/L. 10 days ago: EC = 332 uS/cm, Br = 0.06 mg/L

Jones Daily Average: EC =223 uS/cm, Br = 0.04 mg/L. 10 days ago: = 212 uS/cm, Br = 0.07 mg/L

Clifton Court Forebay Daily Average: EC = 179 uS/cm. 10 days ago: EC = 292. uS/cm

Vernalis: EC = N/R uS/cm, Br = N/R mg/L. 10 days ago: 170 uS/cm and Br = 0.03 mg/L

Gianelli: EC = N/R uS/cm, Br = N/R 10 days ago: 353 uS/cm and Br = 0.11 mg/L

Organic Carbon, TOC, and DOC - Banks Pumping Plant, Jones Pumping Plant, San Joaquin River at Vernalis, Gianelli Pumping Plant

Gianelli Organic Carbon instrument is not reporting (NR).

Banks: TOC = N/R mg/L, DOC = N/R mg/L. 10 days ago: 6.62 mg/L, 6.07 mg/L

Jones (average): TOC = 6.20 mg/L, DOC = 5.93 mg/L. 10 days ago: 5.70 mg/L, 5.50 mg/L

Vernalis: TOC = N/R mg/L, DOC = N/R mg/L. 10 days ago: 5.32 mg/L, 5.05 mg/L

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

Daily Average Pumping: 3/10 through 3/19

Banks Pumping Plant ... ranged between 6,691 cfs and 9,671 cfs over the time period. The 3/19 average was 6,691 cfs.

Jones Pumping Plant ... ranged between zero cfs and 4,341 cfs over the time period. The 3/19 average was 4,341 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 3/19 average was zero cfs. Discharge pumping (O'Neill Forebay water moving into San Luis Reservoir) ranged between 5,433 cfs and 9,019 cfs over the time period. The 3/19 average was 5,433 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 3/19 average was zero cfs. Discharge pumping (DMC water moving into O'Neill Forebay) ranged between 3,262 cfs and 3,905 cfs over the time period. The 3/19 average was 3,799 cfs.

Dos Amigos Pumping Plant ... ranged between 2,842 cfs and 5,993 cfs over the time period. The 3/19 average was 3,228 cfs.

South Bay Pumping Plant ... ranged between 15 cfs and 131 cfs over the time period. The 3/19 average was 59 cfs.

Barker Slough Pumping Plant ... ranged between zero cfs and zero cfs over the time period. The 3/19 average was zero cfs.

Status of the Temporary Barriers as of December 1st, 2022:

Updates are completed for this season.