There is one lake about a 40 minute drive east of Fort Frances that Has been stocked with splake and was stocked years ago with speckles. The lake is only about 1/2 mile of the highway down a well maintained logging road. Possible to catch from shore but a canoe or small skiff will get you around. The lake is only about a mile long and a mile wide. I don't know of any streams in the area for trout. I usually go after lakers if I am going for trout.
With the many logging roads in the area you can get to a lot of small lakes without 4x4 if you are prepared to walk a short distance into them