Category Archives: Folsom Dam Operations Changes

Change Order

Posted on Monday, January 23rd, 2017

Date: Mon, Jan 23, 2017 at 2:37 PM
Subject: Nimbus Dam – Change Order

Please make the following release changes to the American River

Date               Time         From (cfs)           To (cfs)

01/30/2017       0800           8,000                7,650

01/30/2017       1000           7,650                7,300

01/31/2017       0800            7,300               7,000

01/31/2017       1000            7,000               6,700

01/31/2017       1200            6,700               6,400

02/01/2017       0800            6,400               6,150

02/01/2017       1000            6,150               5,900

02/01/2017       1200            5,900               5,650

02/02/2017       0800            5,650               5,400

02/02/2017       1000            5,400               5,150

02/02/2017       1200            5,150               5,000

Comment:  Storage management

Issued by:  P. Manza

Change Order

Posted on Saturday, January 14th, 2017

Date: Fri, Jan 13, 2017 at 3:14 PM
Subject: Nimbus Dam – Change Order

Please make the following release changes to the American River

Date               Time         From (cfs)      To (cfs)

01/14/2017       0800        40,000             35,000

01/14/2017       0900        35,000             30,000

Comment:  Flood control/Storage management

Issued by:  P. Manza

Change Order

Posted on Friday, January 13th, 2017

Date: Fri, Jan 13, 2017 at 10:46 AM
Subject: Nimbus Dam – Change Order

Please make the following release changes to the American River

Date               Time         From (cfs)      To (cfs)

01/13/2017       1500        50,000             45,000

01/13/2017       1600        45,000             40,000

Comment:  Flood control/Storage management

Issued by:  P. Manza

Change Order

Posted on Thursday, January 12th, 2017

Date: Thu, Jan 12, 2017 at 11:40 AM
Subject: Nimbus Dam – Change Order

Please make the following release changes to the American River

Date               Time         From (cfs)      To (cfs)

01/12/2017       1500        60,000             55,000

01/12/2017       1600        55,000             50,000

Comment:  Flood control/Storage management

Issued by:  P. Manza


Here is USACE’s current storage graph.

Change Order

Posted on Tuesday, January 10th, 2017

Date: Tue, Jan 10, 2017 at 3:19 PM
Subject: Nimbus Dam – Change Order

Please make the following release changes to the American River

Date               Time         From (cfs)      To (cfs)

01/10/2017       1600        50,000             55,000

01/10/2017       1700        55,000             60,000

Comment:  Flood control/Storage management

Issued by:  P. Manza

Change Order

Posted on Sunday, January 8th, 2017

After some back and forth about how high the flows should go, Reclamation has settled on 60,000 cfs by 5pm today. The change order is below. Here is a nifty link from the CA NV River Forcast Center about projected inflow.


Date: Sun, Jan 8, 2017 at 5:33 PM
Subject: Nimbus Dam – Change Order – CLARIFICATION

Please make the following release changes to the American River

Date               Time         From (cfs)      To (cfs)

1/09/2017       1200        30,000             35,000

1/09/2017       1300        35,000             40,000

1/09/2017       1400        40,000             45,000

1/09/2017       1500        45,000             50,000

1/09/2017       1600        50,000             55,000

1/09/2017       1700        55,000             60,000

Comment:  Changed timing of increased releases due to changes in projected inflows to Folsom.

Issued by:  P. Manza

Change Order- Increase to 30,000 cfs

Posted on Friday, January 6th, 2017

Project:  Nimbus Dam

Please make the following release changes to the American River.

Date             Time            From (cfs)     To (cfs)

1/07/2017     0800           15,000            20,000

1/07/2017     0900           20,000            25,000

1/07/2017     1000           25,000            30,000

Comment:  Storage management/flood control

Issued by:   P. Manza

Change Order

Posted on Wednesday, January 4th, 2017

Project:  Nimbus Dam

Please make the following release changes to the American River.

Date             Time            From (cfs)     To (cfs)

1/05/2017     1400            7,000             10,000

1/05/2017     1500           10,000            12,000

1/05/2017     1600           12,000            15,000

Comment:  Storage management/flood control

Issued by:   P. Manza

Change Order

Posted on Tuesday, January 3rd, 2017

Project:  Nimbus Dam

Please make the following release changes to the American River.

Date             Time            From (cfs)     To (cfs)

1/05/2017     0700            3,500              5,000

1/05/2017     0800            5,000              7,000

Comment:  Storage management/flood control

Issued by:   J. Sandberg

Change Order

Posted on Wednesday, December 28th, 2016

Project:  Nimbus Dam

Please make the following release changes to the American River:

Date                Time           From (cfs)      To (cfs)

12/31/2016       1700            5,000              4,900

12/31/2016       1800            4,900              4,800

12/31/2016       1900            4,800              4,700

12/31/2016       2000            4,700              4,600

12/31/2016       2100            4,600              4,500

 

01/01/2017       1700            4,500              4,400

01/01/2017       1800            4,400              4,300

01/01/2017       1900            4,300              4,200

01/01/2017       2000            4,200              4,100

01/01/2017       2100            4,100              4,000

 

01/02/2017       1700            4,000              3,900

01/02/2017       1800            3,900              3,800

01/02/2017       1900            3,800              3,700

01/02/2017       2000            3,700              3,600

01/02/2017       2100            3,600              3,500

 

01/03/2017       1700            3,500              3,400

01/03/2017       1800            3,400              3,300

01/03/2017       1900            3,300              3,200

01/03/2017       2000            3,200              3,100

01/03/2017       2100            3,100              3,000

Comment: Storage management

Issued by: T. Washburn