Site Type

Site Name

 

TWX - Estuary Towed Array (Exp.)

The TWX experimental trawl detector is typically deployed in the Columbia River estuary, at and above Jones Beach (rkm 75).

Operated by:

NMFS

First year:

1996

Last year:

2017

RKM:

075

Site Contacts

Steward

Matt Morris
matthew.morris@noaa.gov
(503) 861-1818 x15

POC

Paul Bentley
Paul.Bentley@noaa.gov
(503) 861-1818

Map

Photo Gallery

Operational Dates

Year Start Date End Date Notes
2014 3/18/2014 8/1/2014 See event log for sampling schedule details.
2016
2015 3/19/2015 7/2/2015
2017
1996 4/24/1996 6/13/1996 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.
1998 4/8/1998 6/21/1998 Dates and times based on first/last files submitted to PTAGIS.
1999 4/9/1999 6/8/1999 Dates and times based on first/last reported detections.
2000 4/18/2000 6/21/2000 Dates and times based on first/last reported detections.
2001 4/20/2001 6/22/2001 Dates and times based on first/last reported detections.
2002 4/13/2002 7/30/2002
2003 4/22/2003 6/30/2003 Dates per Dick Ledgerwood; times derived from first/last data files.
2004 4/14/2004 7/3/2004 While TWX files are available from April 8 onward, Dick Ledgerwood reports that TWX sampling operations did not begin until April 14, 2004.
2005 4/20/2005 8/5/2005 TWX sampling began 20 April 05. Sampling with 2 daily crews occurred between 27 April and 17 June. Sampling with a single daily crew working 4 or 5 days per week continued until 4 August.
2006 3/9/2006 10/30/2006 Refer to the TWX Event Log for sampling schedule and effort. There was no sampling between July 21 and September 5.
2007 3/7/2007 7/19/2007 Refer to the TWX event log for a detailed description of 2007 operations.
2008 3/7/2008 10/30/2008 Refer to the TWX event log for a detailed explanation of operations. Regular operations were suspended between August 20 and September 29.
2009 3/6/2009 8/12/2009 See event log for detailed operational comments.
2010 3/23/2010 8/4/2010 Refer to the TWX event log for details of TWX operations in 2010.
2011 3/22/2011 7/1/2011 Initial monitoring effort consists of sampling three days per week. Intensive sampling (two daily shifts) was conducted from May 2 to June 10.
2012 3/15/2012 7/30/2012 Sampling started on March 15 and ended on July 30.
2013 3/25/2013 7/25/2013 Sampled intermittently from March 25 - April 29. Two shift sampling (one daylight, one darkness) occurred from April 29 - June 6. Sampled intermittently from June 6 - July 25.

Current and Historic Site Configurations

Config Seq: 190

Start Date: 4/25/2017

End Date:

Config Seq: 180

Start Date: 4/19/2016

End Date: 4/25/2017

Config Seq: 170

Start Date: 3/1/2010

End Date: 4/19/2016

Config Seq: 160

Start Date: 3/1/2006

End Date: 3/1/2010

Config Seq: 150

Start Date: 3/13/2002

End Date: 3/1/2006

Config Seq: 140

Start Date: 4/1/2001

End Date: 3/13/2002

Config Seq: 130

Start Date: 3/30/2000

End Date: 4/1/2001

Config Seq: 120

Start Date: 4/9/1999

End Date: 3/30/2000

Config Seq: 110

Start Date: 3/1/1998

End Date: 4/9/1999

Config Seq: 100

Start Date: 4/13/1995

End Date: 3/1/1998

Event Logs