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Interrogation Site Metadata

CAL - Carson NFH Adult Return Ladder

Status:   Active - Non-Operational
Site Type: Hatchery Returns  |  Organization: U.S. Fish and Wildlife Service
General Operational Period: Seasonally
Start Date: 5/3/2010 2:45 PM

Hatchery adult spring Chinook return ladder from the Wind River to Carson NFH.

Current Operations

Last File Loaded: CAL-2021-160-P-ALL.xml
Date Last File Loaded: 6/25/2021 5:21 PM
Date Last File Opened: 4/29/2021 1:55 PM
Date Last File Closed: 6/9/2021 10:00 AM
Last Observation Tag: 3DD.003D82A1A7
Last Observation Date: 6/9/2021 9:58 AM
Detection Summary: Last Day's Observations


Primary Contact:

Brian Davis

Data Steward:

Rikeem Sholes


Coordinates: 45.867910, -121.974702  |  River Km: 251.028.000

Operational History

Operational history describes the period the site was interrogating for PIT tags. The comments provide anecdotal information about the operation of the site during this period. Site operational periods are updated typically at the end of the calendar year.

Year Start Date End Date Comments
2021 4/30/2021 12:00 AM 6/10/2021 12:00 AM Start and end dates based on timer tags.
2020 1/24/2020 12:00 AM 6/11/2020 12:00 AM Start and end dates based on timer tags. See event logs for additional operational information.
2018 5/1/2018 12:00 AM 9/26/2018 12:00 AM Start and end dates based on file created and closed dates.
2017 5/10/2017 12:00 AM 8/23/2017 12:00 AM
2016 5/24/2016 12:00 AM 8/24/2016 12:00 AM
2015 4/28/2015 12:00 AM 6/19/2015 12:00 AM
2014 4/28/2014 12:00 AM 8/20/2014 12:00 AM No reported interruption in operations.
2013 5/2/2013 12:00 AM 8/22/2013 12:00 AM No reported interruption in operations.
2012 5/1/2012 12:00 AM 8/22/2012 12:00 AM
2011 No data was submitted in 2011.
2010 5/3/2010 2:45 PM 8/31/2010 4:30 PM First year of recorded operation. The ladder was dewatered on August 31, 2010, and will not be re-opened until Spring 2011.


Configuration metadata includes details about the equipment used at the site to detect and record PIT tags. A new configuration sequence record is created when equipment is added or removed from the site and the period of time it was active. A configuration sequence without an End Date is currently active.

Select Configuration Number:
Start Date:  4/12/2012
End Date:  ----

Site Configuration Diagrams:

Equipment History

Select a type to view the history of equipment installed at this site. A missing End Date implies the information about the equipment is current.

Select Equipment Type:
Equipment Code Description Start Date End Date

No Photos

Event Log Summary

Event Date Event Type Comments
1/1/2020 12:37:00 PM General All data were uploaded in 2019 and there were no gaps in operation. Site ran from about 05/04/2019 to 08/30/2019
1/1/2019 8:42:00 AM General All 2018 data were uploaded and down times were accounted for. Adult ladder typically is open from 05/01 to 08/30.
1/30/2018 10:30:06 AM General In 2017, the Carson PIT site was functioning during adult ladder operation dates from 05/10/2016 to 08/23/2016. Communications (dial-up) was functioning during the first week of operation. All other data were manually uploaded and downtime has been accounted for.
1/30/2017 7:50:47 AM General In 2016, the Carson PIT site was functioning during adult ladder operation dates from 05/04/2016 to 08/24/2016. All data have been uploaded and downtime has been accounted for.
1/26/2016 9:53:22 AM General The Carson adult ladder interrogation system was operational starting on 04/28/2015 and the adult ladder opened on 05/01/2015. Unfortunately the PIT arrays stopped operating sometime after 06/19/2015 15:54:30 due to an electrical malfunction (AC to DC converter failure) resulting in substantial data loss up till the adult ladder closed in August 2015. There are no data gaps from 04/28/2015 to 06/19/2015.
8/20/2014 7:52:00 AM SiteDown Carson adult ladder interrogation site was shut down on 08/20/2014. The site ran continuously from 4/28/2014 to 08/20/2014. Due to computer battery problems, files were not always uploaded automatically. When this was the case missing files were uploaded as a buffer download (*.ALL file). 
4/28/2014 7:52:00 AM SiteUp Carson adult ladder interrogation site up and running 04/28/2014.
12/31/2013 3:34:00 PM General All 2013 data has been uploaded and down times have been accounted for in PTAGIS.

Archived Event Logs