Long-term coho salmon and steelhead trout monitoring program in Coastal Marin County.Summer 2004 monitoring progress report.
Ketcham BJ, Leising KM, Reichmuth M. 2005. Long-term coho salmon and steelhead trout monitoring program in Coastal Marin County.Summer 2004 monitoring progress report.. PORE-NR/WR-05/04
The report summarizes coho salmon (Oncorhynchus kisutch) and steelhead (O. mykiss) monitoring efforts within Olema Creek, Pine Gulch Creek, and Redwood Creek in coastal Marin County, California during summer 2004.Index reach densities by habitat length and surface area are reported for Olema and Pine Gulch Creek, while basinwide juvenile coho population estimates are presented for all Olema, Pine Gulch, and Redwood Creek. We also present weight-length relationships and size histograms for coho and steelhead by watershed. Results from the 2004 summer monitoring season show the highest densities monitored in Olema Creek since surveys began in summer 1999. The basinwide population estimate for coho in the mainstem of Olema Creek (12.4 km reach) is 29,138 ± 1,591, based on calibrated densities of 78.12 coho per pool. The basinwide mainstem estimate for coho in Redwood Creek (7.4 km reach) is 7,121 ± 1,615, based on the calibrated density of 36.71 coho per pool. Our observed densities in Redwood Creek exceed any previously reported values. While we observed high numbers and densities of coho salmon in Olema and Redwood Creek, we observed very few coho individuals in Pine Gulch Creek, representing the lowest estimate (108 coho juveniles) since the return of coho to the watershed was documented in summer 2001.
- Type
- Published Report
- Authors
- Ketcham, Brannon; Leising, Kirsten; Reichmuth, Michael
- Date of Issue
- 2005-08-11
- Units
- GOGA , PORE , SFAN
- Keywords
- Annual Report, Monitoring, Salmonids