For anyone headed that way...day-tripped from Horse up to Lower Basswood Falls last weekend.
Some low water through from rocky channels (maybe three) before a necessary unmarked portage that's about 20 rods. Then one more rocky channel before the first marked portage. And another rocky stretch before the second marked portage. Smooth sailing between the second and third portage and then just some weeds but smooth sailing from the third marked portage to the Basswood River. Pretty easy once beyond the unmarked portage about 1/3 mile after leaving Horse Lake.
Thanks for the update! I'm hoping there will be a good shot of rain before my trip on September 30th. The worst part I think is the reach of the Horse River right before you get to basswood---if it's shallow there, it can be insanely difficult as it's too shallow to paddle, but it's MUCKFEST trying to walk in it! Hope you had a great trip! Cant wait to see LBF again!