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MetaData for Grande Ronde Basin Spring Chinook Salmon Captive Broodstock Program 1995-2002 project status report
Grande Ronde Basin Spring Chinook Salmon Captive Broodstock Program 1995-2002 project status report
Identification Information
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Citation
- Originator: Hoffnagle, T. L., R. W. Carmichael, W. T. Noll
- Publish Date: 2003
- Online Link:
https://www.fws.gov/lsnakecomplan/Reports/ODFWreports.html
- BPA Project #:
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Contact Information
- Agency: Oregon Department of Fish and Wildlife
- Name: Joseph Feldhaus
- Job Position: Assistant Project Leader
- Telephone: 541-962-3724
- E-Mail Address: Joseph.Feldhaus@odfw.oregon.gov
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Description
- Abstract: The Grande Ronde Basin once supported large runs of chinook salmon Oncorhynchus tshawytscha and estimated peak escapements in excess of 10,000 occurred as recently as the late 1950’s (U.S. Army Corps of Engineers 1975). Natural escapement declines in the Grande Ronde Basin have been severe and parallel those of other Snake River populations. Reduced productivity has primarily been attributed to increased mortality associated with downstream and upstream migration past eight dams and reservoirs in the Snake and Columbia rivers. Reduced spawner numbers, combined with human manipulation of previously important spawning and rearing habitat in the Grande Ronde Basin, have resulted in decreased spawning distribution and population fragmentation of chinook salmon in the Grande Ronde Basin (Figure 1; Table 1). Escapement of spring/summer chinook salmon in the Snake River basin included 1,799 adults in 1995, less than half of the previous record low of 3,913 adults in 1994. Catherine Creek, Grande Ronde River and Lostine River were historically three of the most productive populations in the Grande Ronde Basin (Carmichael and Boyce 1986). However, productivity of these populations has been poor for recent brood years. Escapement (based on total redd counts) in Catherine Creek and Grande Ronde and Lostine rivers dropped to alarmingly low levels in 1994 and 1995. A total of 11, 3 and 16 redds were observed in 1994 in Catherine Creek, upper Grande Ronde River and Lostine River, respectively, and 14, 6 and 11 redds were observed in those same streams in 1995. In contrast, the maximum number of redds observed in the past was 505 in Catherine Creek (1971), 304 in the Grande Ronde River (1968) and 261 in 1956 in the Lostine River (Tranquilli et al 2003). Redd counts for index count areas (a standardized portion of the total stream) have also decreased dramatically for most Grande Ronde Basin streams from 1964 - 2002, dropping to as low as 37 redds in the 119.5 km in the index survey areas in 1995 from as high as 1,205 redds in the same area in 1969 (Table 1). All streams reached low points (0-6 redds in the index areas) in the 1990's, except those in which no redds were found for several years and surveys were discontinued, such as Spring, Sheep and Indian creeks which had a total of 109 redds in 1969.
Lower Snake River Compensation Plan (LSRCP)
ODFW- Eastern Oregon Fish Research (EOFR)
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- Purpose: 1) Prevent extinction of the Catherine Creek, Lostine River and upper Grande Ronde River chinook salmon populations. 2) Maintain the genetic diversity and identity of the Catherine Creek, upper Grande Ronde River and Lostine River populations, as well as that of unsupplemented wild Minam and Wenaha rivers populations. 3) Ensure a high probability of population persistence well into the future once the causes of basin wide population declines have been addressed. 4) Provide a future basis to reverse the decline in abundance of endemic Grande Ronde Basin chinook salmon populations.
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- Time Period of Content: 1995-2002
- Geographic Extent: Grande Ronde River basin
- Status: Final
- Use Constraints:
- Format: pdf
Data Quality Information
- Lineage-Source:
Data Information
- No data information was supplied.
Entity and Attribute Information
- Attributes Description: Field attribute information is available in the attached file(s).
Is a physical copy maintained for reference at Headquarters?
Unknown
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BPA Report.Final.2004 JAN 15.pdf
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2/16/2018 10:02:16 AM |
Grande Ronde Basin Spring Chinook Salmon Captive Broodstock Program 1995-2002 project status report |
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