About River Island Marina
38.91186° N, 90.49404° W Boat/Rv services St. Charles, MO The River Island Marina offers a family friendly environment in an open and natural setting with covered slips that look across the channel into our private, wooded island. We have excellent boat launch ramps, plenty of parking, 24-hour restroom access, and a great environment.



Installations
COORDINATES
38.91205 N, -90.49376 E
Port Information
Téléphone
Berth Sizes
< 10m
Profondeur à la marée basse moyenne
2 - 3m
Manœuvrabilité
Fair
Channel Marking
Fair
Port d'entrée
No
Overseas Visitor Berths
No
Type de quai
Floating
Style Side To
Yes
Tidal Flow
Negligible
Active Winter
Yes
Weather Forecast
Wed
9AM - 1PM
13 May 2026
- NW 11 knots.
- 20°C
- UV Index: 7 - High
- Sunny
Wed
1PM - 5PM
13 May 2026
- NW 9–11 knots. Gusts up to 18 knots.
- 19 to 22°C
- UV Index: 7 - High
- Sunny
Wed
5PM - 9PM
13 May 2026
- N 10 knots decreasing to 5 knots. Gusts up to 16 knots.
- Decreasing from 21 to 16°C
- UV Index: 0 - Low
- Sunny