Category Archives: Folsom Dam Operations Changes

Change Order

Posted on Friday, May 18th, 2018

Date: Thu, May 17, 2018 at 2:46 PM
Subject: Nimbus Dam – Change Order

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

Date         Time    From (cfs)      To (cfs)

5/22/18       0800      1,750            2,500

Comment:  Delta Salinity

Issued by: Peggy Manza

 

Change Order

Posted on Friday, May 4th, 2018

Date: Thu, May 3, 2018 at 9:34 AM
Subject: Nimbus Dam – Change Order

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

Date             Time           From (cfs)           To (cfs)
5/07/18        2100           2,000                   1,900
5/07/18        2200           1,900                   1,800
5/07/18        2300           1,800                   1,750

5/10/18        0800           1,750                   2,500
5/10/18        0900           2,500                   3,500

5/11/18        2100           3,500                   3,400
5/11/18        2200           3,400                   3,300
5/11/18        2300           3,300                   3,200
5/12/18        0000           3,200                   3,100
5/12/18        0100           3,100                   3,000

5/12/18        2100           3,000                   2,900
5/12/18        2200           2,900                   2,800
5/12/18        2300           2,800                   2,700
5/13/18        0000           2,700                   2,600
5/13/18        0100           2,600                   2,500

5/13/18        2100           2,500                   2,400
5/13/18        2200           2,400                   2,300
5/13/18        2300           2,300                   2,200
5/14/18        0000           2,200                   2,100
5/14/18        0100           2,100                   2,000

5/14/18        2100           2,000                   1,900
5/14/18        2200           1,900                   1,800
5/14/18        2300           1,800                   1,750

Comment: pulse flow operation, coordinated with fisheries agencies

Issued by: Peggy Manza

The pulse flow accompanies the May 10th hatchery release of juvenile Chinook. This schedule results in a net water balance by dropping to the minimum river release (MRR) before and after the pulse.

Change Order

Posted on Thursday, April 26th, 2018

Date: Wed, Apr 25, 2018 at 9:44 AM
Subject: Nimbus Dam – Change Order

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

Date              Time         From (cfs)    To (cfs)
4/27/18         2100         2,500           2,400
4/27/18         2200         2,400           2,300
4/27/18         2300        2,300            2,200
4/28/18        0000         2,200            2,100
4/28/18        0100         2,100            2,000

Comment: conserve storage

Issued by: Peggy Manza

Change Order

Posted on Tuesday, April 17th, 2018

Date: Tue, Apr 17, 2018 at 9:07 AM

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

Date         Time    From (cfs)      To (cfs)

4/18/18       2100      5,000            4,900

4/18/18       2200      4,900            4,800
4/18/18       2300      4,800            4,700

4/19/18       0000      4,700            4,600
4/19/18       0100      4,600            4,500

 

4/19/18       2100      4,500            4,400

4/19/18       2200      4,400            4,300
4/19/18       2300      4,300            4,200

4/20/18       0000      4,200            4,100
4/20/18       0100      4,100            4,000

 

4/20/18       2100      4,000            3,900

4/20/18       2200      3,900            3,800
4/20/18       2300      3,800            3,700

4/21/18       0000      3,700            3,600
4/21/18       0100      3,600            3,500

 

4/21/18       2100      3,500            3,400

4/21/18       2200      3,400            3,300
4/21/18       2300      3,300            3,200

4/22/18       0000      3,200            3,100
4/22/18       0100      3,100            3,000

 

4/22/18       2100      3,000            2,900

4/22/18       2200      2,900            2,800
4/22/18       2300      2,800            2,700

4/23/18       0000      2,700            2,600
4/23/18       0100      2,600            2,500

Comment:  conserve storage

Issued by: Peggy Manza

Change Order

Posted on Monday, April 9th, 2018

Date: Mon, Apr 9, 2018 at 9:25 AM
Subject: Nimbus Dam – Change Order – DOCUMENTATION of Previous Order
This order is documenting release changes that were made at Nimbus Dam on Sunday Night.
Please make the following release changes to the American River at Nimbus:

Date Time From (cfs) To (cfs)
4/8/18 2100 25,000 22,500
4/8/18 2300 22,500 20,000

Comment: Decreasing inflows

Issued by: Liz Kiteck

______________________________________

Date: Mon, Apr 9, 2018 at 9:51 AM
Subject: Nimbus Dam – Change Order

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

Date Time From (cfs) To (cfs)
4/9/18 2100 20,000 18,650
4/9/18 2300 18,650 17,300
4/10/18 0100 17,300 16,000

4/10/18 2100 16,000 15,000
4/10/18 2300 15,000 14,000
4/11/18 0100 14,000 13,000

4/11/18 2100 13,000 12,300
4/11/18 2300 12,300 11,600
4/12/18 0100 11,600 11,000

4/12/18 2100 11,000 10,500
4/12/18 2300 10,500 10,000
4/13/18 0100 10,000 9,500

4/13/18 2100 9,500 9,100
4/13/18 2300 9,100 8,700
4/14/18 0100 8,700 8,300

4/14/18 2100 8,300 7,950
4/14/18 2300 7,950 7,600
4/15/18 0100 7,600 7,300

4/15/18 2100 7,300 7,000
4/15/18 2300 7,000 6,700
4/16/18 0100 6,700 6,400

4/16/18 2100 6,400 6,150
4/16/18 2300 6,150 5,900
4/17/18 0100 5,900 5,650

4/17/18 2100 5,650 5,400
4/17/18 2300 5,400 5,150
4/18/18 0100 5,150 5,000

Comment: Decreasing inflows

Issued by: Peggy Manza

Change Order

Posted on Thursday, April 5th, 2018

Date: Thu, Apr 5, 2018 at 11:30 AM
Subject: Nimbus Dam – Change Order

Project: Nimbus Dam

Please make the following release changes to the American River:
date               time          from (cfs)     to (cfs)
4-06-18         0800          20,000          22,500
4-06-18         0900          22,500          25,000

Comment: Forecasted storm operations

Issued by: Peggy Manza

Change Order

Posted on Thursday, April 5th, 2018

Date: Thu, Apr 5, 2018 at 9:34 AM
Subject: Nimbus Dam – Change Order

Project: Nimbus Dam

Please make the following release changes to the American River:
date                time          from (cfs)          to (cfs)
4-05-18          1000         10,000                12,500
4-05-18          1100         12,500                15,000
4-05-18          1300         15,000                17,500
4-05-18          1400         17,500                20,000

Comment: Increase in forecasted Folsom Inflows

Issued by: Peggy Manza

Change Order

Posted on Tuesday, April 3rd, 2018

Date: Thu, Mar 29, 2018 at 9:32 AM
Subject: Nimbus Dam – Change Order

 

Project:  Nimbus Dam

 

Please make the following release changes to the American River:

date              time             from (cfs)          to (cfs)

3-29-18         2100             10,000                9,750

3-29-18         2300               9,750                9,500

3-30-18         2100               9,500                9,100

3-30-18         2300               9,100                8,700

3-31-18         0100               8,700                8,300

4-03-18         2100               8,300                7,950

4-03-18         2300               7,950                7,600

4-04-18         0100               7,600                7,300

Comment:   Decreasing inflows

Issued by:  Peggy Manza

 

 

Date: Tue, Apr 3, 2018 at 2:52 PM
Subject: Nimbus Dam – Change Order

Project: Nimbus Dam

Please make the following release changes to the American River:

4-04-18         0800         8,300         9,300
4-04-18         0900         9,300         10,000

Comment: Preparing for storm expected at end of week.

Issued by: Peggy Manza

 

Change Order

Posted on Friday, March 16th, 2018

Project:  Nimbus Dam

Please make the following release change to the American River.

date              time             from (cfs)          to (cfs)

3-18-18         2100           1750                  1650

3-18-18         2300           1650                  1550

3-19-18         0100           1550                  1450

3-19-18         0300           1450                  1350

 

3-19-18         2100           1350                  1250

Comment:   Storage conservation, ramping down to March FMS flow

Issued by:  P, Manza

Water Forum Comment: Current Minimum Release Requirement (MRR) as calculated by Reclamation is 1,250 cfs.  

Change Order

Posted on Tuesday, January 9th, 2018

Date: Tue, Jan 9, 2018 at 9:29 AM
Subject: Nimbus Dam – Change Order

Please make the following release change to the American River.

Date                  Time          From (cfs)     To (cfs)

01/09/2018         1200         2,000            2,500

01/09/2018         1300         2,500            3,000

Comment:   Storage management.

Issued by:  P, Manza