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Interrogation Site Metadata

CBS - Clear Branch Dam spillway

Status:   Decommissioned
Site Type: Instream Remote Detection System  |  Organization: Confed. Tribes of the Warm Springs Reser.
General Operational Period: Seasonally
Start Date: 4/4/2017 12:00 AM
End Date: 7/1/2020 12:00 AM

The interrogation site is located at the spillway of Clear Branch Dam. The site uses a single 10 ft x 2 ft PVC cased antenna mounted on the entrance of the spillway in a pass-through configuration. During moderate to low spillway flows all water spilling from the reservoir passes through a notch in the spillway entrance which the antenna completely surrounds. At high spillway flows water may top the spillway retaining wall outside of the coverage of the antenna. The interrogation site will be operated seasonally depending on when the reservoir is at full pool and spill is occurring at Clear Branch Dam. The antenna is controlled by a Biomark IS1001 ACN reader. Power is provided by solar panel(s) charging a deep cycle battery bank. Interrogation data is manually downloaded periodically.


Data Steward:

Ryan Gerstenberger


Coordinates: 45.460357, -121.657972  |  River Km:

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
2020 6/16/2020 12:00 AM 7/1/2020 12:00 AM Start and end dates based on timer tags. Site was removed in 2020.
2019 4/18/2019 12:00 AM 6/3/2019 12:00 AM Start and end dates based on timer tags.
2018 Site not operated due to construction at Clear Branch Dam.
2017 4/4/2017 12:00 AM 7/10/2017 12:00 AM


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:  4/4/2017
End Date:  7/1/2020

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


Event Log Summary

Event Date Event Type Comments
6/3/2019 11:12:00 AM SiteDown Site shut down for the season.
4/18/2019 1:23:00 PM SiteUp Site reinstalled and activated for the season.
9/30/2018 12:00:00 AM SiteDown Site not operated in 2018 due to repairs and construction at Clear Branch Dam and tailrace.
7/10/2017 9:17:00 AM SiteDown Site shut down when site dewatered at the end of the spill period at Clear Branch Dam.
4/4/2017 11:00:00 AM SiteUp Site initially installed and functioning.

No Archived Event Logs