- Type
- Harbour
Marina on the Pentagon Lagoon, on the Virginia side of the Potomac River, about a mile and a half north of Reagan National Airport.
Guide
Approach and anchoring
Entered from the Potomac River off the Pentagon Lagoon, along the George Washington Memorial Parkway. Motor boats from 20 to 50 feet.
Practical
385 wet slips, including 4 transient berths at 3 USD per foot per day. Slips carry 30 and 50A shore power and water. Fuel berth with pump-out, free for slip holders. Island Time Bar and Grill on site. Free parking. No liveaboards.
Ashore
The marina sits within the Lyndon B. Johnson Memorial Grove, a stand of pines and walking paths on the Potomac shore. The Mount Vernon Trail for walking and cycling passes alongside.
Key facts
- Type
- Harbour
- Coordinates
- 38.87427, -77.04949 (38°52.46'N 77°2.97'W)
- Town
- Washington
- Country
- United States
- Phone
- +12023470173
- Updated
- July 7, 2026
Getting there
Columbia Island Marina lies at 38°52.46'N 77°2.97'W, that is 38.87427, -77.04949 in decimal degrees.
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