April 2021 Ice Thicknesses Posted on April 8, 2021 by Sonot Kkaazoot May skiing on Smith Lake is looking better and better for 2021. Normal ice thickness in April for Smith Lake is 27 inches. At 33″, the ice thickness on Smith Lake is 22% above normal. Thank you NWS Fairbanks. Share this:TwitterFacebookLike this:Like Loading... Related