Table 4. — Comparisons 

 trout ascending the 

 14, 1960 



of median elapsed times of group releases of Chinook salmon and steelhead 

 half -width and full-width Ice Harbor fishway, June 8 to September 



Dominant 

 species 



Test 



condi- 



tion'"' 



Date 



Fish 

 entering 

 fishway 



Fish 



completing 



fishway 



Test 

 Period 



Median 



elapsed 



time 



Half -width fishway 

 Test l2 



Test 2 



Test 3 



Test 4 



Test 5 



Test 6^ 



Test 72 



Full-width fishway 



Test 1 



Test 2 



Test 3 



Test 4 



Test 5 



Test 6 



•'■ See table 1. 



^ Both sides of the 



Chinook 



Steelhead 

 Steelliead 

 Steelhead 

 Steelhead 

 Steelhead 



Steelhead 



Chinook 



Chinook 



Chinook 



Chinook 



Steelhead 



Steelhead 



June 13 



July 28 



July 29 



Aug. 3 



Aug. 5 



Aug. 12 



Sept. 14 



June 8 



June 9 



Jxjne 10 



June 24 



Aug. 9 



Aug. 10 



Number 



40 

 40 



75 



183 



120 



148 



77 

 48 



154 

 69 



41 

 74 

 47 

 51 

 200 

 282 



Percent 



92.5 

 87.5 



92.0 



100.0 



93.3 



98.6 



100.0 

 95.8 



99.4 

 95.6 



92.7 

 94.6 

 78.7 

 98.0 

 100.0 

 97.2 



Minutes 



85 



64 

 76 

 76 

 75 

 84 



104 



85 

 103 



88 



56 

 106 



88 



Minutes 



8.8 

 8.2 



4.7 



8.2 



5.0 



6.6 



4.8 

 9.7 



7.2 

 7.2 



11.2 

 9.2 



10.4 

 6.6 

 3.7 

 7.2 



divided fishway tested simultaneously. 



Table 5. —Capacity tests in the 1-on-lO-slope Ice Harbor fishway (half -width), 1960. Six-pool 



ascent, 60-minute test periods 



^ Includes suckers ( Catostomus sp. ), squawfish ( Ptychocheilus oregonensis ), and carp ( Cyprinus 

 carpio ). 



12 



