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Interrogation Site Metadata

LMJ - Lower Monumental Dam Juvenile

Status: Active - Operational

Site Type: Juvenile Fish Bypass Facility | Organization: Pacific States Marine Fisheries Commission

General Operational Period: Seasonally
Start Date: 4/25/1993 7:42 PM

This site monitors the Lower Monumental Dam smolt bypass and sampling facility. The site operates seasonally for juvenile outmigration and includes antennas in the full flow bypass flume that is often active before and after the sampling facility each year. Separation by Code (SbyC) is also available to allow researchers to selectively divert PIT-tagged fish. SbyC acts on all PIT-tagged fish by default to return them to the river, rather than be collected for transportation with untagged run-of-river fish. Researchers can use SbyC to override that default action and instead allow PIT-tagged fish to be treated like the untagged population.

Current Operations

Last File Loaded:	LMJ-2025-120-P-020.json
Date Last File Loaded:	4/30/2025 9:22 PM
Date Last File Opened:	4/30/2025 7:00 PM
Date Last File Closed:	4/30/2025 8:00 PM
Last Observation Tag:	3DD.0078E2BC2E
Last Observation Date:	4/30/2025 7:57 PM
Detection Summary:	Last Day's Observations

Contacts

Primary Contact:

Gordon Axel
gaxel@psmfc.org
509-539-1270

Data Steward:

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

Location

Coordinates: 46.562954, -118.543164 | River Km: 522.067

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.

Configuration

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: 2/24/2021

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.

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Photos Not Found

Event Log Summary

This displays the last 25 events, to see the full history, log in to the Event Logs.

Archived Event Logs

LMJ_1993 | LMJ_1994 | LMJ_1995 | LMJ_1996 | LMJ_1997 | LMJ_1998 | LMJ_1999 | LMJ_2000 | LMJ_2001 | LMJ_2002 | LMJ_2003 | LMJ_2004 | LMJ_2005 | LMJ_2006 | LMJ_2007 | LMJ_2008 | LMJ_2009 | LMJ_2010 | LMJ_2011 | LMJ_2012 | LMJ_2013 |