2/11/2019

10 Day Northern California Weather Forecast: 0% chance of precipitation on 2/11, 0% on 2/12, 90% on 2/13, 50% on 2/14, 50% on 2/15, 20% on 2/16, 10% on 2/17, 0% on 2/18, 40% on 2/19 and a 20% chance on 2/20.

 

From CDEC: Precipitation to date for water year 2018-2019 - As of 2/11/2019:

Northern Sierra Precipitation Index: 32.3" - 105% of average for this date

Southern Sierra Precipitation Index: 27.7" - 121% of average for this date

From CDEC: Average statewide snow water equivalents as of 2/11/2019:

North: 23.8" - 112% of normal for this date

Central: 29.0" - 135% of normal for this date

South: 24.5" - 138% of normal for this date

Statewide: 26.2" - 129% of normal for this date


River Flows (Current and estimated future flow rates)

Sacramento River (Freeport)

The daily average was 45,528 cfs on 2/10 and is expected to decrease to 41,064 cfs on 2/12 then increase to 68,142 cfs by 2/15.

Feather River (at Boyd's Landing)

The Feather is currently reporting 4,773 cfs and is expected to decrease to 4,297 cfs on 2/13 then increase to 20,315 cfs on 2/14 then decrease to 13,556 by 2/15.

American River (at the Fair Oaks/H Street Bridge)

The American is reporting 7,660 cfs and is expected to increase to 9,554 cfs by 2/15.

San Joaquin River (near Vernalis)

The San Joaquin is reporting 5,394 cfs and is expected to increase to 11,167 cfs by 2/15.


Delta Cross Channel Gate Operation

Posted: 11/28/2018

Delta Cross Channel Gates will CLOSE on Friday November 30, 2018 at approximately 0900 hrs.

The gates will remain closed until further notice.

Comment: NMFS BO Action IV.1.2 (Dec. 1)

Objective: Modify DCC gate operation to reduce direct and indirect mortality of emigrating
juvenile salmonids and green sturgeon in November, December, and January.
Action: During the period between November 1 and June 15, DCC gate operations will be
modified from the proposed action to reduce loss of emigrating salmonids and green
sturgeon. The operating criteria provide for longer periods of gate closures during the
emigration season to reduce direct and indirect mortality of yearling spring-run, winter-run,
and CV steelhead. From December 1 to January 31, the gates will remain closed, except as
operations are allowed using the implementation procedures/modified Salmon Decision Tree

PLEASE NOTE: GATES MAY NEED TO BE CLOSED WITH
SHORT NOTICE IF A FISHERY CONCERN IS IDENTIFIED.

 

EC and Bromide - Banks Pumping Plant, Jones Pumping Plant, Clifton Court Forebay (EC), San Joaquin River at Vernalis, Gianelli Pumping Plant, Hood (EC)

Recent precipitation lowered levels at all the stations. This will most likely continue as more rain is expected.

Banks Daily Average: EC - 426 uS/cm, Br - 0.17 mg/L, 10 Days ago: 554 uS/cm and 0.32 mg/L

Jones Daily Average: EC - ? uS/cm, Br - 0.13 mg/L, 10 days ago: ? uS/cm, 0.27 mg/L (DMC EC sensor is down.)

Clifton Court Forebay: EC - 423 uS/cm, 10 days ago: 620 uS/cm

Vernalis: EC - 529 uS/cm, Br - 0.17 mg/L, 10 days ago: 804 uS/cm and 0.37 mg/L

Gianelli: EC - 604 uS/cm, Br - (Estimated) 0.28 mg/L, 10 days ago: 624 uS/cm and (Estimated) 0.28 mg/L (The anion analyzer is down.)

Hood: EC - 162 uS/cm, 10 days ago: 215 uS/cm


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

With the exception of Banks; Jones, Vernalis and Hood all experienced increases due to precipitation runoff. Hood and Vernalis peaked at 6.0 mg/L on 2/6 and 8.6 mg/L on 2/8 respectively. Old river flow remained stable, between -2000 cfs and +2500 cfs, but Banks did not see an increase like Jones did. This is most likely due to mixing in Clifton Court Forebay.

Banks: TOC = 8.5 mg/L, DOC - 7.7 mg/L. 10 days ago: 8.3, 7.6

Jones: TOC = 9.3 mg/L, DOC - 7.9 mg/L. 6 days ago: 7.1, 6.9

Vernalis: TOC = 7.0 mg/L, DOC = 6.2 mg/L. 10 days ago: 4.5, 4.1

Gianelli: TOC = ? mg/L, DOC = ? mg/L.10 days ago: ?, ? (The carbon analyzer is down.)

Hood: TOC = 3.7 mg/L, DOC = 3.5 mg/L. 10 days ago 3.5, 3.0

 

Pumping: 2/1 - 2/10

Banks... varied between 2,098 cfs and 4,827 cfs; the 2/10 average was 2,511 cfs.

Jones... varied between 979 cfs and 3,995 cfs over the time period. The 2/10 average reported 3,531 cfs.

Gianelli Pumping Plant: Daily average discharge generation (Sal Luis Reservoir into O'Neill Forebay) reported zero cfs over the time period. Daily average discharge pumping (O'Neill Forebay into San Luis Reservoir) varied between zero cfs and 6,443 cfs over the time period. The 2/10 average was 3,511 cfs.

O'Neill Pumping Plant: Daily average discharge generation (O'Neill Forebay to the DMC) reported zero cfs over the time period. Discharge pumping (DMC to O'Neill Forebay) varied between 907 cfs and 3,324 cfs. The 2/10 average was 3,299 cfs.

Dos Amigos Pumping Plant: Varied between 1,956 cfs and 3,120 cfs. The 2/10 daily average was 3,120 cfs.

South Bay Pumping Plant: Ranged between 27 cfs and 165 cfs. The 2/10 average was 30 cfs.

Barker Slough Pumping Plant: Varied between 14 cfs and 22 cfs. The 2/10 average was 14 cfs.

 

Stations:

Banks Pumping Plant - Operational

Jones Pumping Plant - Operational

Vernalis (San Joaquin River) - Operational

Hood (Sacramento River) - Operational

Gianelli Pumping Plant - The carbon analyzer and anion analyzer are down. The sonde is operational.