Figure 6.--The l:8-slope fishwav with a 1.5-foot rise between pools. 





^itffltfwB 



Figure 7.--The l:16-slope fishway with the width reduced to 6 feet. 



1:8 Slope, 2.0-foot Rise 



This test fishway (Type 4) had a 2.0- 

 foot rise between pools (figure 8, Type 4). 

 The control fishway was Type 1 as listed 

 in table 1. 



Twelve groups of 20 steelhead were 

 tested in each fishway (table 4). The mean 

 of the median elapsed times of the test 

 fishway was 14.28 minutes and of the 

 control, 12.73 minutes. A t test on the 



