EVENT LOG FOR SITE TWX

        Most recent activity to be listed first.
        First line of each entry lists date, time and who is reporting.
        Subsequent lines of each entry aligned under Time column.
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Date       Time  Who      What
---------- ----- -------- -----------------------------------------------
07/07/2003 16:00 Ledgerwo
    Site event log Large Trawl 2003.

    A total of 20,408 PIT-tagged juvenile salmonids were detected in the
    estuary using the large pair-trawl detection system in 2003.   Sampling
    began on 22 April and continued through 30 June and a total of 794 hours
    of detector on-time were recorded during this period.  All detection
    records have specific GPS positions available.  Two daily sampling crews
    were used between 28 April and 15 June when detector on-times averaged
    14 hours per day (minimum daily effort during this period was 10 hours
    per day).  All data files have been submitted to PTAGIS interrogation
    site code TWX.

    Of the total detections, 2,662 had been previously detected at
    Bonneville Dam.  Those fish will form the basis of calculation survival
    for inriver migrants to Bonneville Dam using the Single Release method.
    A fair number of the total detections (about 3,300 pending final
    analysis) were transported by barge and released downstream from
    Bonneville Dam, those detections will be used to compare timing and
    relative survival between barged and inriver migrant fish to better
    understand the variations in smolt to adult ratios for those fish
    groups passing into the ocean at similar times.
04/24/2003 09:19 Ledgerwo
    Intermittent electronics testing and equipment preparation activities
    for the large surface pair-trawling effort began in early April near
    Jones Beach, river kilometer 75.  The first trawl deployment occurred on
    22 April and training deployments with limited daily sampling effort
    will continue for about a week.  On 28 April we anticipate adding a
    second daily sampling crew and continue the two-crew sampling effort
    throughout the spring migrant period (mid to late June).

    Due to budget constraints, sampling with the small trawl in the lower
    estuary has been cancelled as has been the originally scheduled sampling
    for subyearling chinook salmon in late June and July.
01/01/2003 12:20 Dave
    Initialized new event log for 2003.  2002 event log has been archived.
         ####End of Event Log for TWX###