University of Oregon Libraries University of Oregon Libraries
Digital Collections

NW Stream Survey
Skip to content  Collection Home : Browse Collection : Advanced Search : Preferences : My Favorites   
 
Search results for Upper Columbia River Watershed... > Dams   
Refine your search
Creator
Witter, Alfred S. (16)

results 1-20 of 79 item(s)  page 1 of 4 : ( <<  1  2  3  4  >> ) :: previous : next
select all : clear all : add to favorites 
 Image: Image Title: Subject: Description/Notes:
1. Central spill taken from middle fishway Central spill taken from middle fishway Dams; Rivers -- Washington; Spillways; Fishways Rock Island Dam
2. Salmon entering elevator from brail Salmon entering elevator from brail Dams; Rivers -- Washington; Salmon; Fish traps Rock Island Dam
3. Rock Island Dam Rock Island Dam Dams; Rivers -- Washington Rock Island Dam on the Columbia River
4. Central trap at Rock Island dam Central trap at Rock Island dam Dams; Rivers -- Washington; Fish traps
5. Tunnels from collecting pool to brail Tunnels from collecting pool to brail Dams; Rivers -- Washington; Fish traps Tunnels from collecting pool to brail, on left trap, at the Rock Island Dam in the spring
6. Salmon going from brail through tunnel to elevator Salmon going from brail through tunnel to elevator Dams; Rivers -- Washington; Salmon; Fish traps Left trap at the Rock Island Dam during the summer
7. Chinooks jumping over middle rocks Chinooks jumping over middle rocks Dams; Rivers -- Washington; Chinook salmon Rock Island Dam
8. Rock Island Dam Rock Island Dam Dams; Rivers -- Washington Rock Island Dam on the Columbia River
The middle fish ladder has not yet been constructed
9. Chinook jumping Chinook jumping Dams; Rivers -- Washington; Chinook salmon; Fish ladders Chinook jumping over middle rocks at the Rock Island Dam
10. Center trap Center trap Dams; Rivers -- Washington; Fish traps Center trap at Rock Island Dam
11. Collecting pool at trap at Rock Island Dam Collecting pool at trap at Rock Island Dam Dams; Rivers -- Washington; Fish traps
12. Salmon entering elevator from brail Salmon entering elevator from brail Dams; Rivers -- Washington; Salmon; Fish traps Rock Island Dam left trap in the summer
13. East fishway and collecting pool East fishway and collecting pool Dams; Rivers -- Washington; Fishways Rock Island Dam
14. Tunnels from collecting pool Tunnels from collecting pool Dams; Rivers -- Washington; Fish traps Tunnels from collecting pool into brail at east trap at the Rock Island Dam
15. Salmon entering elevator from brail Salmon entering elevator from brail Dams; Rivers -- Washington; Salmon; Fish traps Rock Island Dam
16. Central spill and left fishway Central spill and left fishway Dams; Rivers -- Washington; Fishways; Spillways Central spill and left fishway taken from middle fishway at Rock Island Dam
17. Chinooks in brail Chinooks in brail Dams; Rivers -- Washington; Fish traps Chinooks in brail at east trap at Rock Island Dam
18. Elevator down on the left trap Elevator down on the left trap Dams; Rivers -- Washington; Fish traps Elevator down on the left trap at Rock Island Dam during the summer
19. Rock Island Dam Rock Island Dam Dams; Rivers -- Washington; Spillways; Fishways; Fish traps Rock Island dam showing the central spillway, west trap and fishway
20. Rock Island Dam Rock Island Dam Dams; Rivers -- Washington Rock Island Dam on the Columbia River
select all : clear all : add to favorites 
results 1-20 of 79 item(s)  page 1 of 4 : ( <<  1  2  3  4  >> ) :: previous : next
University of Oregon Libraries | Oregon State University Libraries | Contact Us ^ to top ^