Site Type

Site Name


IHA - Ice Harbor Adult

Ice Harbor Dam Adult Fishways (both); replaced by ICH

Operated by:


First year:


Last year:




Site Contacts


Nicole Tancreto
(503) 595-3100


Photo Gallery

Operational Dates

Year Start Date End Date Notes
2003 3/11/2003 1/1/2004 This the first year of PIT tag detection in the Ice Harbor Dam ladders. Detection began in the left (South) ladder at 3:00pm on March 11, and in the right (North) ladder at noon on March 12. Interrogation data was buffered in the transceivers until 3:45 pm on March 19, when the data collection platforms went live, and date/time stamps were first associated with each detection. The buffered data from prior to 3/19, and any duplicate interrogations recorded subsequently, were offloaded on March 21 into two data files, IHA03080.F and IHA03080.H. Interrogation activity in the left (South) ladder was interrupted between 3/20/03 1:40pm and 3/21/03 11:00am due to an electrical hazard.
2004 1/1/2004 1/1/2005
2005 1/1/2005 4/8/2005 The Ice Harbor South Shore adult ladder was dewatered for annual maintenance between January 3-27, 2005. The North Shore ladder was dewatered for annual maintenance on January 31, 2005. All transceivers on the north ladder except for 0C were mistakenly put into standby on 3/3/05 at 9:15 am. This was found and corrected on March 7. The IHA site definition was transferred to the new IHR composite site on April 8, 2005. This is the last (partial) year of operation under the IHA site code.

Current and Historic Site Configurations

Config Seq: 100

Start Date: 3/1/2003

End Date: 4/8/2005