© Crimson Bluffs Chapter, Lewis and Clark Trail Heritage Foundation

Yorks Islands Fishing Access, near Townsend, Montana

Lewis Journal- July 24, 1805:

“we saw many beaver and some otter today; the former dam up the small channels of the river between the islands 

and compell the river in these parts to make other channels; which as soon as it has effected that which was stoped by the beaver 

becomes dry and is filled up with mud sand gravel and driftwood.  the beaver is then compelled to seek another spot 

for his habitation wher[e] he again erects his dam.  thus the river in many places among the clusters of islands is constantly changing 

the direction of such sluices as the beaver are capable of stoping or of 20 yds in width.  this anamal in that way I beleive 

to be very instrumental in adding to the number of islands with which we find the river crouded.” 

 

( Sometime later, Clark penned on his map: Yorks 8 Islands )