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Restoration Projects

Project Information

Title: Rocky Creek/Bay Restoration (Montague)

Project Year and Number: 1994: 94043-B2

Other Fiscal Years and Numbers for this Project: None

Principal Investigator (PI): Ken Hodges, DOI

Assisting Personnel: Kevin Buckley

Research Location: Prince William Sound

Restoration Category: General Restoration

Injured Resources Addressed: Cutthroat Trout , Dolly Varden

Abstract: Although cutthroat trout and Dolly Varden over winter and spawn in freshwater, these fish use near shore and estuarine habitat for feeding throughout their lives. The highest concentrations of petroleum hydrocarbon metabolites in bile of all fish sampled in 1989 were found in Dolly Varden. The larger cutthroat trout also showed higher levels of mortality in oiled than in unoiled areas.

Tagging studies demonstrated that the annual mortality of adult Dolly Varden in oiled areas was 32 percent greater than in unoiled areas. In 1989-1990, there was 57 percent greater mortality, and in 1990-1991, a 65 percent greater mortality, in oiled than in unoiled areas.

Cutthroat trout growth rates in oiled areas were 68 percent in 1989-1990 and 71 percent in 1990-1991 of those in unoiled areas. Although concentrations of bile hydrocarbons were greatly reduced in 1990 and 1991, indicating less exposure to oil, it is unclear why differences persist in survival rates between oiled and unoiled streams.


Geographic Regions Prince William Sound

Proposal: PDF Not Available

Funding Recommendations: View

Funding Detail For: 1994

Quarterly Project Tasks For: 1994

Annual Report: 1994: Not Available

Final Report: View

Publications from this Project: None Available