What are the chances to catch one? To be honest rather slim! Almost 95% of the fisherman in the Seven Sisters to Slave falls area are after Walleye (pickerel) even though areas above Point du Bois and below the Seven Sisters dam are easier to fish for them. It is almost impossible to catch a musky by accident that way. For comparison during summer guiding of about 4 months in an area with the highest density of Muskies in the LOTW area,... it happens 2 to 4 times that somebody catches a musky with a pickerel bait or lure. In that very area the rate of Pike to Musky when targeting Musky is about 1P:4M. So if you do not go specifically after them the chances are near nil. Private statistics (during 2008 and 2009) suggest that even when you target them in the stretch of river in question,.. than the catch ratio Pike to Musky is 28:1, meaning you might statistically catch 28 Pikes of decent size before you catch one Musky. Size wise you can expect 70cm (27”) to (so far) 115cm (45”).
So to put this even more into perspective it is 112 times more likely to catch a musky upstream Withe Dog Dam,..and compare this with the likelihood of holding a fish in your hand because of the mandatory use of barbless hooks (which is a really good thing for easy release practices) ,...I think it is fair to say based on statistics from 2008/2009 you are realistically looking at around a 1/250 chance to get one for a picture in your boat with the same effort as in the LOTW’s area in the stretch of Winnipeg River in question here in Pinawa.