Lakeshore properties are tricky because they don't sell as frequently. A quick search of lakeshore homes right in that area only results in 6 recent sales, and price per sq. ft. is all over the place. So it really depends on the specific property.
Water clarity is a factor to consider, but I'm not sure it'll greatly increase your home's value. I'm also an appraiser and know that most lenders want at least one comparable home on the same lake. A pond or river front property is not nearly as desirable, but sometimes they have to be used because there isn't anything else to compare it to.
I would suggest having an analysis done on the home to determine the market value. If you would like that done please feel free to contact us. Thank you.