[env-trinity] Trinity River Flow Increases and Schedule

Byron bwl3 at comcast.net
Wed Apr 21 18:44:45 PDT 2010


Dear Trinity River  enthusiasts -

 

For your information and safety on the river I provide the following
information.  The Trinity River Restoration Program (TRRP) plans to initiate
spring releases from the dam and high flow coarse sediment (gravel)
implementation in the near future.    

 

Flows will rise to 1,500 cubic feet per second (cfs) on April 27, and will
peak at 6,000 cfs on May 2nd for 5 days. See attached flow schedule for
timing details.   

 

During peak flows, between Monday May 3rd and May 7th, the TRRP will add
gravel (coarse sediment = gravel 3/4 to 4 inch diameter) to the river at two
high flow locations.  1) At the weir hole (aka diversion pool at River Mile
111 about a mile downstream of Lewiston dam) up to 2,000 yards of gravel
will added.  2) At the Lowden Ranch area (River Mile 105) just upstream of
the mouth of Grass Valley Creek, up to 1,500 yards will be added.  In both
of these areas high velocity conditions will move the gravel quickly
downriver from the augmentation sites.  

 

Best Regards-

Brandt

 

Brandt Gutermuth

Environmental Specialist

Trinity River Restoration Program

PO Box 1300, 1313 S Main St

Weaverville, CA  96093

530.623.1806 (voice)

530.623.5944 (fax)

www.trrp.net 

 

 


Water Year 2010 Release Schedule from Lewiston Dam to the Trinity River


as Recommended by the Trinity Management Council on March 31, 2010


For a Normal Water Year Type 

		
			
Total Water Volume (acre-feet) = 

646,561


>From Date

To Date

# Days

Flow Release (cfs)

 

Water Volume (Acre-Feet) 


1-Oct-09

15-Oct-09

15

450

13,365


16-Oct-09

22-Apr-10

189

300

112,266


23-Apr-10

26-Apr-10

4

500

3,960


27-Apr-10

27-Apr-10

1

1,500

2,970


28-Apr-10

29-Apr-10

2

2,000

7,920


30-Apr-10

30-Apr-10

1

2,500

4,950


1-May-10

1-May-10

1

4,636

9,179


2-May-10

6-May-10

5

6,000

59,400


7-May-10

7-May-10

1

5,680

11,246


8-May-10

8-May-10

1

5,400

10,692


9-May-10

9-May-10

1

5,130

10,157


10-May-10

10-May-10

1

4,860

9,623


11-May-10

15-May-10

5

4,600

45,540


16-May-10

16-May-10

1

4,390

8,692


17-May-10

17-May-10

1

4,220

8,356


18-May-10

18-May-10

1

4,080

8,078


19-May-10

19-May-10

1

3,980

7,880


20-May-10

20-May-10

1

3,870

7,663


21-May-10

21-May-10

1

3,760

7,445


22-May-10

22-May-10

1

3,650

7,227


23-May-10

23-May-10

1

3,540

7,009


24-May-10

24-May-10

1

3,430

6,791


25-May-10

25-May-10

1

3,310

6,554


26-May-10

26-May-10

1

3,210

6,356


27-May-10

27-May-10

1

3,100

6,138


28-May-10

28-May-10

1

2,990

5,920


29-May-10

29-May-10

1

2,880

5,702


30-May-10

30-May-10

1

2,760

5,465


31-May-10

31-May-10

1

2,650

5,247


1-Jun-10

1-Jun-10

1

2,550

5,049


2-Jun-10

2-Jun-10

1

2,440

4,831


3-Jun-10

3-Jun-10

1

2,330

4,613


4-Jun-10

4-Jun-10

1

2,220

4,396


5-Jun-10

5-Jun-10

1

2,110

4,178


6-Jun-10

1-Jul-10

26

2,000

102,960


2-Jul-10

2-Jul-10

1

1,860

3,683


3-Jul-10

3-Jul-10

1

1,730

3,425


4-Jul-10

4-Jul-10

1

1,600

3,168


5-Jul-10

5-Jul-10

1

1,480

2,930


6-Jul-10

6-Jul-10

1

1,370

2,713


7-Jul-10

7-Jul-10

1

1,160

2,297


8-Jul-10

8-Jul-10

1

1,060

2,099


9-Jul-10

9-Jul-10

1

963

1,907


10-Jul-10

10-Jul-10

1

885

1,752


11-Jul-10

11-Jul-10

1

812

1,608


12-Jul-10

27-Jul-10

16

750

23,760


28-Jul-10

28-Jul-10

1

700

1,386


29-Jul-10

29-Jul-10

1

650

1,287


30-Jul-10

30-Jul-10

1

600

1,188


31-Jul-10

31-Jul-10

1

550

1,089


1-Aug-10

1-Aug-10

1

500

990


2-Aug-10

30-Sep-10

60

450

53,460

 

 

Byron Leydecker, JcT

Chair, Friends of Trinity River

PO Box 2327

Mill Valley, CA 94942-2327

415 383 4810 land/fax 

415 519 4810 mobile

http://www.fotr.org 

 

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