Spawning Redd Maps

Overview of Spawning Areas

Map showing Spawing Areas

Redd Maps by Year

Year	Ives/Pierce	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.
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

• Redd distribution modeling results through December 2006

• Redd distribution modeling results through November 2006

 

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