EVENT LOG FOR SITE TWX

        The first line of each entry contains a date/time stamp & who is reporting.
        The most recent entry is listed first.

Date       Time  Who
---------- ----- --------
08/28/2012 06:28 Bob_Magi

    Trawl sampling monitoring PIT-tagged juvenile salmonids in the estuary,
    began on 15 March and continued uninterrupted through 30 July 2012.
    Between 1 May and 15 June, we sampled in both daylight and darkness
    using two daily shift and averaged 14 sample hours/d.During this period,
    we detected 1.9% of yearling Chinook salmon and 2.6% of steelhead
    previously detected at Bonneville Dam (a rough measure of sample
    efficiency).In total, we detected 16,731 salmonids in 952 hours of
    sampling (5,567 spring/summer Chinook salmon, 1,816 fall Chinook salmon,
    7,383 steelhead, 842 sockeye, 456 coho salmon, and 668 fish with no
    release information in PTAGIS.
03/27/2012 12:55 Bob_Magi

    Sampling in the Columbia River Estuary (approximately rkm 61-83) for
    PIT-tagged juvenile salmonids with a surface trawl was initiated on 15
    March 2012.Using the matrix PIT tag antenna developed in 2008 (8.5ft
    wide x 10ft tall fish passage tunnel) fixed to the cod end of the trawl
    enabling fish to pass through the system unhandled, we initiated
    sampling 2 days weekly.Sampling will increase to daily sampling 5 days
    per week and finally to two daily sampling shifts 7 days per week as
    densities of PIT-tagged fish in the estuary increase and warrant the
    effort (typically in early May).This effort will remain consistent
    through the high fish density period of the juvenile outmigration
    season.As detection rates decrease (late June or early July) sampling
    will be reduced to 5 days weekly using one daily shift until sampling is
    halted.
01/01/2012 00:00 PTOC_Bot
    Annual log file initiation for TWX

         #### End of Event Log for TWX ###