Therefore, our estimates not only exclude some Lake Superior fishing expenditures, but underestimate the impact of boat anglers which, on average, spend more than stream anglers. As a result, our economic impacts estimates for noncharter recreational anglers are conservative. One factor that lowers the MN DNR estimates is that winter and tributary fishing are not included in the summer creel survey that we used. This still does not explain the discrepancy. We do not support or defend either estimates.
Economic impacts vary considerably depending on which estimate of angler effort is used.
While the estimates presented here may not be as consistent or as precise as we'd like, they do provide a range of estimates based on the best information available. Footnotes 1 The Minnesota charter fishing economic impact includes some spending that occurred in Superior, Wisconsin. This is because local spending was defined in the 1987 survey as that spending which occurred within ten miles of the charter boat. We, therefore, cannot separate money spent in Duluth or Superior by Twin Ports charter clients. 2 Multiplier Effect.