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
Tue
5AM - 9AM
19 May 2026
- S 7 knots increasing to 10 knots. Gusts up to 21 knots.
- Increasing from 20 to 23°C
- UV Index: 0 - Low
- Cloudy
Tue
9AM - 1PM
19 May 2026
- S 9–12 knots veering W 9-12 knots. Gusts up to 22 knots.
- 22 to 28°C
- UV Index: 2 - Low
- Chance of showers
Tue
1PM - 5PM
19 May 2026
- W 10 knots veering N 10 knots. Gusts up to 18 knots.
- Decreasing from 22 to 17°C
- UV Index: 6 - High
- Chance of showers