/ w. 



v\ 



GRACE HARBOR CREEK 



PRESQUE ISLE CO, MICHIGAN 



^luj.ll.uxu1 i u j i ^fr^L ^ ^ ^^ " I I A J ^ ' L ftu " w ' ' ' ' ' ' ' ' ' ' ' ^ '■'■ " " " ' i uj 



***>!. ™_ " *' J ^ " !» » » ' * » 'J /K .1 1: 



H I i i I i 1 I i I i n-[ft i i i i i i i i ' i 





U/^....U,.A. . 



MIL L/C AN CREEK 



PRESQUE ISLE CO.. MICHIGAN 



*e li 30 



1 1 ' n in 1 1 1 n n it , i 1 1 1 1 1 1 1 , i i i n i 



GREEN CREEK 



CHEBOYGAN CO., MICHIGAN 





iiliUmttiHiwiiiiiiiiiiiuiiAiiiiiiii , ,, 



TROUT RIVER 



PRESQUE ISLE CO., MICHIGAN 



■UJ I II UJ I M I I I II I I I I I I I I I I n in, 



v ■ — A; 



OCQUEOC RIVER 



PRESQUE ISLE CO, MICHIGAN 



II I MI II M IIIIIIII MHrflM il nun n II M l ll liiillMi hi mi ii ii iiiVmtmuatm^^uu ii t n. i,, i ■ ii miiil 



*igure 6. --Number of sea lampreys taken each day during 1950 season In five northern Lake Huron 

 tributaries of different size and character, and mean stream water temperatures for period. 



