South Dakota State Parks and Recreation Areas Open House And Free Fishing WeekendSouth Dakota State Parks and Recreation Areas Open House And Free Fishing WeekendThinkstockShare on TwitterShare on FacebookEvery day until May 18, 2014, 8:00AM - 5:00PMEvent Website: www.gfp.sd.govAdditional InformationEnjoy free entrance into all South Dakota state parks and recreation areas. Camping fees still apply. No fishing license is required.