Spring Fishing Spring Fishing in the Boundary Waters. (2012) Do to the early spring temps fish spawn will be weeks ahead. The Walleyes should be spawned out by mid April. The Smallmouth Bass should be done by the 3rd week of May. By Art Unlimited Admin|2016-02-02T11:13:59-06:00March 26th, 2012|Blog, Fishing Facts|Comments Off on Spring Fishing Share This Story, Choose Your Platform! FacebookTwitterRedditLinkedInTumblrPinterestVkEmail About the Author: Art Unlimited Admin