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Anadromous Fish of the Rogue River. Allison DenBleyker December 4, 2007 GIS in Water Resources. Background of the Rogue (a.k.a. Grandma’s River). Study Area. Fish Barriers in the Rogue Basin. Flood control and Irrigation Dams. Anadramous Passage. Life Cycle Born in fresh water streams - PowerPoint PPT Presentation
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Anadromous Fish of the Rogue River
Allison DenBleykerDecember 4, 2007
GIS in Water Resources
Background of the Rogue(a.k.a. Grandma’s River)
Study Area
Fish Barriers in the Rogue Basin
Flood control and Irrigation Dams
Anadramous Passage• Life Cycle
– Born in fresh water streams– Live most of life in the ocean– Return to natal streams to
reproduce
• Stream Habitat– Ideal Temperature 5 – 11°C– Upper Limit of 16°C– Velocity > 3 m/s– Depth between 20 – 36 in
Migration Path
Migration Path
Coho Salmon Migration Path
Migration Path
Elk and Lost Creek Dams
Applegate Dam
Temperature• Viable Habitat above
Lost Creek Dam• 7 USGS stations
Temperature & Stream Discharge Profiles do not explain decreasing population
Future Work and Conclusion
• Consider other factors harming fish during spawning (DO, sediments) and migration (overharvesting)
• GIS useful tool for visualizing extent of river accessible to migrating fishes