Site Type

Site Name

 

GRA - Lower Granite Dam Adult

Lower Granite Dam Adult Fishway and Fish Trap

Operated by:

PSMFC

First year:

1988

Last year:

2017

RKM:

522.173

Site Contacts

Steward

Nicole Tancreto
ntancreto@psmfc.org
(503) 595-3141

POC

Don Warf
dlwarf@psmfc.org
(509) 735-2773 x1

Map

Operational Dates

Year Start Date End Date Notes
2015 1/1/2015 1/1/2016 Ladder watered down January 5-March 4. Adult fish trap begain trapping during weekedays only on March 12. Trap switched to 24/7 operations on August 31 and was shut down for the season November 22.
2016 1/1/2016 1/1/2017 Ladder dewatered from January 4-February 23. Adult trapping operations ran from March 3-November 20.
2017
1988 4/22/1988 11/19/1988 The Start_date and End_date values reflect the first and last dates of detection, respectively. The actual interval of operational dates is not known.
1989 3/10/1989 11/24/1989 The Start_date and End_date values reflect the first and last dates of detection, respectively. The actual interval of operational dates is not known.
1990 3/6/1990 12/14/1990 The Start_date and End_date values reflect the first and last dates of detection, respectively. The actual interval of operational dates is not known.
1991 3/19/1991 12/6/1991 The Start_date and End_date values reflect the first and last dates of detection, respectively. The actual interval of operational dates is not known.
1992 2/28/1992 11/18/1992 The Start_date and End_date values reflect the first and last dates of detection, respectively. The actual interval of operational dates is not known.
1993 3/10/1993 11/12/1993 The Start_date and End_date values reflect the first and last dates of detection, respectively. The actual interval of operational dates is not known.
1994 3/13/1994 12/1/1994 The Start_date and End_date values reflect the first and last dates of detection, respectively. The actual interval of operational dates is not known.
1995 3/10/1995 12/10/1995 The Start_date and End_date values reflect the first and last dates of detection, respectively. The actual interval of operational dates is not known.
1996 4/20/1996 12/4/1996 The Start_date and End_date values reflect the first and last dates of detection, respectively. The actual interval of operational dates is not known.
1997 3/15/1997 12/1/1997 The Start_date and End_date values reflect the first and last dates of detection, respectively. The actual interval of operational dates is not known.
1998 1/1/1998 1/1/1999 Actual dates of operation are unknown.
1999 3/1/1999 12/6/1999
2000 3/3/2000 12/4/2000 First year of ISO detection (four of ten coils).
2001 3/4/2001 12/13/2001
2002 3/4/2002 12/12/2002
2003 2/28/2003 1/1/2004 This is the first season with the new (in-ladder) slotted-weir detectors. The ladder watered-up on February 25, and the weir detectors (and trap monitors) were activated on February 28. 2003. The trap was put into service the morning of March 3, 2003.
2004 1/1/2004 1/1/2005 The site was dewatered for annual maintenance at 9:00am on 1/15/04, and returned to service at 3:00pm on February 9. The facility fish trap was operated between March 1 and November 22; outside of this period, fish were able to ascend (or descend) the ladder without diversion.
2005 1/1/2005 1/1/2006 The Lower Granite adult ladder dewatered for annual maintenance between January 3 and February 22, 2005. The picket lead was installed on March 7, diverting all fish into the adult trap side channel.
2006 1/1/2006 1/1/2007 The Lower Granite Adult Fishway was dewatered between January 3 and February 17 for annual maintenance. Fish were diverted into the facility trap channel beginning on March 1, 2006. Trapping was suspended from April 20 until May 5 due to low numbers of fish. Trapping was suspended again from July 24 until September 1 due to high water temperatures. The trap was taken out of service for the remainder of the year on November 21.
2007 1/1/2007 1/1/2008 The ladder was dewatered for scheduled annual inspection and maintenance between Jan. 4 and Feb. 26. The trap began operating on March 1. Trap operations were suspended between July 23 and September 1 due to high water temperatures. The trap was taken out of service for the season on November 20.
2008 1/1/2008 1/1/2009 The LGR fish ladder was dewatered for annual maintenance between Jan. 2 and Feb. 4, 2008. The ladder was taken down for emergency maintenance between Feb. 11 and Feb. 21. The fish trap was in service between March 7 and November 25.
2009 1/1/2009 1/1/2010 The Lower Granite fishway was dewatered from January 6 until March 2 for winter maintenance. The adult trap watered up on March 3. The trap was out of service between Sept. 1 - 6 due to high water temperatures. The trap dewatered for the season on Nov. 15.
2010 1/1/2010 1/1/2011 The Lower Granite adult ladder was dewatered between January 4 and February 3, 2010. The adult trap was activated on March 1 and deactivated on Nov. 18.
2011 1/1/2011 1/1/2012 The LGR adult ladder was dewatered from Jan. 3 until Feb. 16 for annual maintenance. The adult trap start operating on March 7 and closed for the season on November 20.
2012 1/1/2012 12/18/2012 Ladder was dewatered January 4 - February 10. The trap was opened on March 8. Trap operations ceased on November 19. The ladder was dewatered on December 18.
2013 2/26/2013 1/1/2014 Trap operations began on March 4 and concluded on November 25. Trapping was suspended from July 15 - September 23 due to high water temperatures. The adult trap was closed for the season on November 25.
2014 1/1/2014 1/1/2015 Ladder was dewatered for maintenance from January 6 - February 25. Adult fish trap operated March 10 - November 11.

Current and Historic Site Configurations

Config Seq: 150

Start Date: 2/17/2016

End Date:

Config Seq: 140

Start Date: 12/5/2003

End Date: 2/17/2016

Config Seq: 130

Start Date: 2/20/2003

End Date: 12/5/2003

Config Seq: 120

Start Date: 1/22/2001

End Date: 2/20/2003

Config Seq: 110

Start Date: 2/1/1995

End Date: 1/22/2001

Config Seq: 100

Start Date: 1/1/1987

End Date: 2/1/1995

Event Logs