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<blockquote data-quote="Allen" data-source="post: 489145" data-attributes="member: 389">Maybe 15 years ago I took the ex and kids to Nelson.&nbsp; A nice gent pointed me in the direction of a very good crappie and bluegill bite.&nbsp; Since bluegill are probably my favorite tasting fish, I decided to keep a few 10+ inch gills and crappie.&nbsp; Every single fish I put the knife to were just filled with worms in their abdomen.&nbsp; I noped right the heck out of eating them.FWIW, I would be no more worried about the chemical quality of the water in Nelson than I would be in eating fish from just about any random Prairie Pothole lake.&nbsp; There was a theory at one time that surmised the lakes downwind of the coal plants were higher in mercury and other heavy metals, but the reality is that our surface geology is nearly 100% made up of sedimentary rocks that contain high amounts of organic carbon.&nbsp; This organic carbon is the remains of plants and animals from thousands to hundreds of millions of years old.&nbsp; Biology teaches us that living creatures, especially the ones higher up on the food chains tend to bioaccumulate heavy metals (mercury in particular), so the vast majority of the mercury in those waters is naturally occurring.&nbsp; It simply leaches out of the sediments as ground water percolates through the soil on its way to the nearest surface expression of water.</blockquote>

[QUOTE="Allen, post: 489145, member: 389"] Maybe 15 years ago I took the ex and kids to Nelson. A nice gent pointed me in the direction of a very good crappie and bluegill bite. Since bluegill are probably my favorite tasting fish, I decided to keep a few 10+ inch gills and crappie. Every single fish I put the knife to were just filled with worms in their abdomen. I noped right the heck out of eating them. FWIW, I would be no more worried about the chemical quality of the water in Nelson than I would be in eating fish from just about any random Prairie Pothole lake. There was a theory at one time that surmised the lakes downwind of the coal plants were higher in mercury and other heavy metals, but the reality is that our surface geology is nearly 100% made up of sedimentary rocks that contain high amounts of organic carbon. This organic carbon is the remains of plants and animals from thousands to hundreds of millions of years old. Biology teaches us that living creatures, especially the ones higher up on the food chains tend to bioaccumulate heavy metals (mercury in particular), so the vast majority of the mercury in those waters is naturally occurring. It simply leaches out of the sediments as ground water percolates through the soil on its way to the nearest surface expression of water. [/QUOTE]

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