About Belmont Bay Harbor Marina
Protected Harbor just Minutes from the Potomac. Belmont Bay Marina is a beautifully positioned marina on the banks of the Occoquan River. The floating dock system with Brazilian Walnut contains 158 boat slips ranging from 30 to 50 feet in length.Visit the harbor master building and get Belmont Bay merchandise. One of the unique benefits of Belmont Bay Marina is its strategic position on the Occoquan River. Located just past the start of a No Wake Zone, it offers convenient access to the Potomac River that no other marina on the Occoquan can provide. The No Wake Zone ensures that Belmont Bay’s serene natural environment is protected and that all docked vessels remain undisturbed.





Facilities
COORDINATES
38.65647 N, -77.23400 E
Port Information
Telephone
Berth Sizes
< 10m, 10-20m
Depth at MLW
2 - 3m
Manoeuvrability
Fair
Channel Marking
Fair
Port of Entry
No
Overseas Visitor Berths
Yes
Dock Type
Floating
Style Side To
Yes
Tidal Flow
Negligible
Active Winter
Yes
Weather Forecast
Sat
9AM - 1PM
04 April 2026
- SW 3–6 knots.
- Increasing from 23 to 26°C
- Chance of showers
Sat
1PM - 5PM
04 April 2026
- S 5 knots increasing to 9 knots. Gusts up to 16 knots.
- 25 to 29°C
- UV Index: 6 - High
- Chance of showers
Sat
5PM - 9PM
04 April 2026
- S 6–10 knots. Gusts up to 21 knots.
- Decreasing from 27 to 21°C
- UV Index: 0 - Low
- Cloudy