APPENDIX B 



Dams -vrfoich step upstream migrations of 



ssa lampreys in Michigan 



Region 1. 



1. Menominee River 



Menominee Lovrer Dam Iltmiber 1 in Menominee ^ Michigan; approxi- 

 mately 2»5 miles from mouth; built in 1921;; concrete; 12-foct 

 head; spillway 22 feet vd-de; fish ladder retjorted in operation 

 in 1939. 



2o Manistique River 



Manistique Pulp and Paper Mil dam; about 1 mile from mouthj 

 concrete; 27-foot head; flow passes through plant machinery; 

 apparently blocked from upper river by this structure. Hoit- 

 ever^ sea lamprey spafming formerly occurred in seepage chan- 

 nel alongside flume of dam. Lampreys reached this channel 

 via the "hot-pond" overflov;- and plant sewage disposal pipe. 

 Recent changes in this drain have apparently blocked the lam- 

 prey from even this limited spawning area. 



Region 2. 



1. Cheboygan River- 

 Michigan Public Service Company hydro-electric dam in Chetoygazi., 

 Michigan; 3/l| mile from mouth; built in 1368; wood and con^ret'^; 

 lI|.<,5~foot head; flow through turbines or over spilli^ay; fish 

 chute reportedly inoperative; ship lock present; believed a 

 barrier except when locks operated in spring months. 



2. Au Sable River 



Foote Dam (Consum.ers Povrer Compan;r), T2hri, RoE, Section? .il}-}y> 

 approximately 10 miles from mouth; built in 1917; concrete'; 

 3S-foct head; spillway 72 feet side; flow through turbiAes or 

 over spillway; fish ladder present but inoperati^re; believed he 

 constitute barrier. 



3. EUc River 



Mi,c.higan Public Service Company povrer dam, EH-c Rapids_, MLchlgan; 

 l/lO mile from mouth; built in 1915 (reconstnj.cted 1930) earth 

 construction; 10-foot head; 20-foot vride spillway; flow through 

 turbines or ever spillway. No fish chute or ladder present; 

 beli.eved to constitute barrier. 



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