Please make the following release changes to the American River at Nimbus:

Date         Time    From (cfs)      To (cfs)

10/01/18       2100      1,800            1,700

10/01/18       2200      1,700            1,600

10/01/18       2300      1,600            1,500

Comment:  reducing releases to October MRR

ARG,

This is to document that Unit 1 was put in configuration 4 at approx 10 am on Wednesday, September 11, 2018.

Configuration after changes:

Upper shutters – Units 1, 2, and 3 up

Middle shutters –  Unit 1 and 2 up, Unit 3 down

Lower shutters – Unit 1 up, Units 2 and 3 down

Comment: Temperature management in the Lower American River

Ordered by:  Peggy Manza

The following change order was issued by Peggy Manza on 9/4/18:

Date         Time    From (cfs)      To (cfs)

9/06/18       2200      1,800            1,700

9/06/18       2300      1,700            1,600

9/07/18       0000      1,600            1,500

9/07/18       0100      1,500            1,400

9/07/18       0200      1,400            1,300

9/07/18       0300      1,300            1,200

9/07/18       0400      1,200            1,100

9/07/18       0500      1,100            1,000

9/07/18  As soon as fish picket installation is completed and staff are out of the river, please increase releases back to 1,800 cfs.  Maintain release at 1,800 cfs until further notice

Comment:  fish picket installation for fall weir operations

This is to document that Unit 2 was put in configuration 3 at approx 10 am on Tuesday, August 28, 2018.

Configuration after changes:

Upper shutters – Units 1, 2, and 3 up

Middle shutters –  Unit 1 and 2 up, Unit 3 down

Lower shutters – all down

Comment: Temperature management in the Lower American River

Ordered by:  Peggy Manza

Please make the following release changes to the American River at Nimbus:

Date         Time    From (cfs)      To (cfs)

8/28/18       2100      2,200            2,100

8/28/18       2200      2,100            2,000

8/28/18       2300      2,000            1,900

8/29/18       2100      1,900            1,800

Comment:  Reduced delta needs

Issued by: Peggy Manza

Please make the following release changes to the American River at Nimbus:

Date         Time    From (cfs)      To (cfs)

8/14/18       2100      4,000            3,900

8/14/18       2200      3,900            3,800

8/14/18       2300      3,800            3,700

8/15/18       2100      3,700            3,600

8/15/18       2200      3,600            3,500

8/15/18       2300      3,500            3,400

8/16/18       2100      3,400            3,300

8/16/18       2200      3,300            3,200

8/16/18       2300      3,200            3,100

Comment:  Reduced delta needs

Issued by: Peggy Manza

ARG,

The following Folsom Dam Temperature Shutter Change Order was issued by Peggy Manza on 8/9/18:

Project: Folsom Dam

Please put Unit 3 in configuration 2 at approx 7:30 am on Thursday, August 9, 2018.

Configuration after changes:

Upper shutters – Units 1, 2, and 3 up

Middle shutters – all down

Lower shutters – all down

Comment: Temperature management in the Lower American River

Ordered by:  Peggy Manza

The following change order was issued by Peggy Manza on 8/7/18:

Please make the following release changes to the American River at Nimbus:

Date         Time    From (cfs)      To (cfs)

8/09/18       2100      4,500            4,400

8/09/18       2200      4,400            4,300

8/09/18       2300      4,300            4,200

8/10/18       0000      4,200            4,100

8/10/18       0100      4,100            4,000

Comment:  Reduced delta needs

Date: Fri, Jul 27, 2018 at 11:43 AM

ARG members.  As you may be aware from recent news reports, the Carr fire in northern California is currently affecting operations of all our Northern facilities.  Shasta and Keswick were both evacuated last night.  Powerline transmissions have been impacted.  CVO is currently in emergency operations mode.  While Folsom Reservoir is obviously not in the direct line of fire, as a coordinated project, there may be some temporary operational changes at Folsom, mostly relating to power generation.  It is hoped that the situation will be stabilized by next week and we can reassess project operations across all projects at that time.

Thank you for your understanding, and I will update you as new information is available.

Peggy Manza

Full July 2018 ARG Handouts