Figure 5. — Experimental fishways under construction. 

 Careful planning and great ingenuity are required 

 in building temporary structures capable of sup- 

 porting and controlling large volumes of water. 



'« 

 n 



Figure 6. — Full-scale experimental fishways in op- 

 eration. Standard ligf)ting conditions are created 

 by mercury-vapor lamps. Picketed barriers and 

 release gates for the control of fish have yet to be 

 erected. 



The Fisheries-Engineering Research Laboratory 

 is now (1960) in its fifth year of full-scale opera- 

 tion. The following is a review intended only as 

 a brief summary of researcli to show the scope and 

 general progress of tlie studies at the laboratory. 

 Listed in Appendix A are the proposals, reports, 

 and publications tliat describe in detail the major 

 aims and objectives of the project, the experi- 

 mental designs and procedures followed, complete 

 observations and results with tlie limitations and 

 qualifications of tlic data and conclusions. Re- 



search at the laboratory is planned and conducted 

 as a team effort, with the task of reporting divided 

 among the staff by assignment. Selection of 

 major research items to be assigned priority or 

 studied in greatest detail follow the recommenda- 

 tions of the Corps of Engineers with the advice 

 of the Technical Advisory Committee for the 

 Corps' Fisheries-Engineering Research Program 

 composed of representatives of State and Federal 

 fishery agencies. 



.5.S0816 o— 61- 



