Anadromous Fish of the Rogue River

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