Bradford Island Fishway

Bradford Island Fishway (HM1QXB)

Location: Cascade Locks, OR 97014 Multnomah County
Country: United States of America

N 45° 38.511', W 121° 56.633'

  • 0 likes
  • 0 check ins
  • 0 favorites
  • 121 views
Pictures
Sorry, but we don't have a picture of this historical marker yet. If you have a picture, please share it with us. It's simple to do. 1) Become a member. 2) Adopt this historical marker listing. 3) Upload the picture.
Inscription

Fish Ladder at Bonneville Dam

Migrating fish are attracted to large flows of water coming from the Bonneville Dam. To take advantage of this natural reaction, fish-collection facilities are placed along the face of the powerhouse and at each end of the spillway dam. These collection facilities attract fish with their own flow of water, which leads fish into the fishways.
The Bradford Island fishway is a long, inclined flume with horizontal weirs creating a series of successive pools. Each pool is one foot higher than the adjacent pool downstream. Fish may swim through submerged artifices or over the wier crests to move from one pool to the next higher one.
The upper portion of the Bradford Island fishway was recently reconstructed. Instead of the weirs found in the lower reaches of the fishway, the new design creates and inclined series of vertical slots and eddy-lice pools. Biological research has shown that these inclined pools are superior for fish passage and allow for self-regulating control of water in the fishway.
As they near the top of the fishway, the fish pass the counting station and move by the winding windows. You are invited to watch the underwater viewing area located on level 1 (down the stairs).
Check Ins  check in   |    all

Have you seen this marker? If so, check in and tell us about it.

Details
HM NumberHM1QXB
Tags
Marker ConditionNo reports yet
Date Added Friday, March 4th, 2016 at 9:01am PST -08:00
Locationbig map
UTM (WGS84 Datum)10T E 582303 N 5054798
Decimal Degrees45.64185000, -121.94388333
Degrees and Decimal MinutesN 45° 38.511', W 121° 56.633'
Degrees, Minutes and Seconds45° 38' 30.66" N, 121° 56' 37.98" W
Driving DirectionsGoogle Maps
Area Code(s)541
Closest Postal AddressAt or near Star Route, Cascade Locks OR 97014, US
Alternative Maps Google Maps, MapQuest, Bing Maps, Yahoo Maps, MSR Maps, OpenCycleMap, MyTopo Maps, OpenStreetMap

Is this marker missing? Are the coordinates wrong? Do you have additional information that you would like to share with us? If so, check in.

Nearby Markersshow on map
This Old Turbine
0.05 miles
Sturgeon Habitat
0.74 miles
Beacon Rock
0.91 miles
The Bridge of the Gods
2.46 miles
The Bridge of the Gods
2.6 miles
Lewis and Clark Trail
3.71 miles
Beacon Rock
3.81 miles
Oneonta Tunnel
7.3 miles
Oneonta Gorge
7.3 miles
Simon Benson
9.47 miles

Comments 0 comments

Maintenance Issues
  1. This marker needs at least one picture.
  2. Is this marker part of a series?
  3. What historical period does the marker represent?
  4. What historical place does the marker represent?
  5. What type of marker is it?
  6. What class is the marker?
  7. What style is the marker?
  8. Does the marker have a number?
  9. What year was the marker erected?
  10. Who or what organization placed the marker?
  11. Can this marker be seen from the road?
  12. Is the marker in the median?