Spawning Redd Maps:
Overview of Spawning Areas
Redd Maps by Year
Year Ives Island Multnomah I-205 Ives Island is located at river mile 143, 3 miles downstream from Bonneville Dam. This location is by Skamania Island, river mile 136 about 10 miles downstream from Bonneville Dam and 7 miles downstream from the Ives/Pierce Island complex. This location is near the I-205 bridge (Glen-Jackson Bridge) River Mile 113. 2009 Ives (chum redds) Multnomah (chum redds) 2008 Ives (chum redds) Multnomah (chum redds) 2007 Ives Multnomah I-205 2006 Ives 2005 Ives Multnomah I-205 2004* Ives Multnomah I-205 2003 Ives - maps by survey date available Multnomah - maps by survey date available I-205 - maps by survey date available 2002 Ives no data no data 2001 Ives no data no data 2000 Ives no data no data 1999 Ives no data no data 1998 Ives no data no data * NOTE: The Chinook redd maps include all visible redds, both new and old. The GIS files for the 2004 Chinook spawning season represents the approximate area used through 11-16-2004. In the past field crews mapped each redd but time and budget restrictions have reduced the effort for Fall Chinook, to mapping the perimeter of redds only. The Chum redd maps only show new redds and individual GIS points are taken for each redd.
2006 Redd Distribution Modeling by USFWS
Other Maps
Redd Maps from Pacific Northwest National Laboratory
- Location of Fall Chinook Salmon Redds near Pierce and Ives Island in 2004 (preliminary data by PNNL)
Below John Day Dam
- Map of fall chinook redds surveyed below John Day Dam (sub-sample of the total redd population) - 2002
Data Courtesy of
USFWS and
ODFW
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