$1.50/ft
The Alton Marina
Alton, Illinois - IL, United States
Welcome to The Alton Marina
Please note this marina has a maximum height of 22' for covered docks
The Alton Marina invites you to join their incredible facility. Whether you’re planning a day trip, you’re in transit, or just spending the weekend, you’ll always feel like it’s a vacation at Alton Marina. The Harbormasters Jill & Greg and the Alton Marina staff are dedicated to making your stay at “The Finest 5-Star Marina on the Mississippi River” memorable, comfortable, and safe.
The Alton Marina is one of the friendliest marinas on the water! Slip holders love meeting and getting to know visitors. Whether you’re just looking for a place to tie up for the night, or somewhere to bed down for a couple of weeks, you’ll feel right at home here.vThe Alton Marina can accommodate vessels up to 80' in length and 25' in width with access to fantastic amenities including full floating docks and structures, private bathrooms, showers and laundry facilities, complimentary WiFi, large swimming pool and deck area, and of course a great view!
As your final fuel stop for many miles, you’ll want to top off with fresh ValvTect Diesel or Unleaded fuel at the marina's easily accessible fuel dock. Book your boat slip today on Snag-A-Slip.
Read MoreAmenities
- Gas
- Pump-Out
- Ice
- Provisions
- Security
- WiFi
- Diesel
- Town Nearby
- Parking
- Restrooms
- Showers
- Floating Docks
- Restaurant Nearby
- Bars/Clubs Nearby
- Swimming Pool
- Restaurant On-Site
- Laundry
Location
38.88763 / -90.1774
List Your Slip!
Cancellation Policy: This Marina has a 24 hour cancellation policy. Please contact Snag-A-Slip or the marina at least 24 hours prior to your stay to receive a full refund.
October Cancellation Policy: This Marina has a 48 hour cancellation policy during the full month of October. If your stay is for October, please contact Snag-A-Slip or the marina at least 48 hours prior to your stay to receive a full refund.

Anthony on August 25th, 2023:
Vessel Name | Boat Type | Vessel LOA | Vessel Draft |
---|---|---|---|
Event Horizon | Power | 63 ft | 5.0 ft |
Stayed one night on a T head. just a little under staffed but courteous and dock hands try very hard. Still learning but great attitudes. We stayed on the "T" at J dock power was mediocre at best (98 Volts)
So be aware of that. Jill the Harbour Master is awesome. Only thing I would say is be prepared for a 3% add to credit card for fuel etc. Not unexpected. overall great place. Handled our 5 foot draft ok mostly saw 6-10 ft.