I.C.W. Marker 31 Indian Springs Marina is a full service marina conveniently located in mid-Pinellas County on the Intercoastal Waterway featuring: 406 Enclosed High Dry Storage Slips . The north launch area is also complete with new docks, sea wall, and landscaping. Visit our Marina Services section to find out more about our facilities. 48 Wet Slips up to 40' Access to your boat, all the time. Full Service Haul Yard and Fuel Station w/Dock N Pay self-service, credit card system.