Interrogation Site Metadata
BO4 - Bonneville WA Ladder Slots
Status: Active - OperationalGeneral Operational Period: Year Round
Start Date: 2/28/2005 11:00 AM
This site monitors the portion of the Washington Shore fish ladder above the adult fish facility and the counting window. Fish detected at BO4 which are travelling upstream are expected to have been detected at BO2 and/or BO3 before BO4. From 2005 until 2025, the site consisted of four vertical slot antennas. In 2018, two antennas were added to monitor the lamprey passage structure. In 2025, this portion of the ladder was rebuilt to improve lamprey passage. The site now consists of three antennas monitoring a vertical slot, an orifice and a lamprey passage orifice in four separate weirs.
Current Operations
| Last File Loaded: | BO4-2025-176-P-022.json |
| Date Last File Loaded: | 6/26/2025 2:40 AM |
| Date Last File Opened: | 6/25/2025 9:00 PM |
| Date Last File Closed: | 6/25/2025 10:00 PM |
| Last Observation Tag: | 3DD.0077BCE6AB |
| Last Observation Date: | 6/25/2025 8:52 PM |
| Detection Summary: | Last Day's Observations |
Contacts
Location
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.
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.
Photos
Event Log Summary
This displays the last 25 events, to see the full history, log in to the Event Logs.