Boat excursion Along the Hamilton Canal and Maha Oya River in Negombo: Travel to Negombo for a tranquil boat excursion along the Hamilton Canal and Maha Oya River. Become one with the tranquil natural surroundings as you stroll through lush flora and take in the local settlements that line the water’s edge. The quiet boat journey offers a tranquil break from city life and opportunity for photography and birdwatching.