Last Updated: May 6, 2025 - 8:00 AM Our current water level at The Alton Marina is 413.85 ft. (3-4' +/-. within the harbor).  The most current USACE water forecast is predicting lower water levels over the next 7 days reaching 413.5 elevation, at which time the Public Launch Ramp will be closed due

Positioned at Mile Marker 203, we are the last stop for fuel on the river before Kimswick if you're traveling south on the Mississippi.  All of our Fuel & Gas is treated with Valvtect fuel additive. Current Fuel/Gas Prices - 2024: Gasoline- $4.159 per gallon Diesel- $4.45.9 per gallon *Contract Slip holders receive $0.15/gal

Discounts For Members of Boat U.S., Marina Life and America's Great Loop Cruisers' Association (AGLCA), we offer a discount on fuel. Show us your membership card receive $0.10/gal discount. 6 & 12 Month Slip Holders save $0.15/gal at fuel dock, plus free pump out service. Anniversary Party Dockage Special for All Boaters (08/24) -