Riverfront Tidewater (RTW). The purpose of the Riverfront Tidewater District is to encourage cohesive mixed-use development of vacant parcels in proximity to the Blackstone and Seekonk Rivers that provides high-quality amenities for both residents and visitors, contributes to positive economic development, improves multimodal connections to downtown Pawtucket, and enhances public access to, and viewsheds of, the riverfront area.