Question: What is the body of water by the birthplace of Sandbar Sinister's author?

Boston is surrounded by the "Greater Boston" region and is contiguously bordered by the cities and towns of Winthrop, Revere, Chelsea, Everett, Somerville, Cambridge, Watertown, Newton, Brookline, Needham, Dedham, Canton, Milton, and Quincy. The Charles River separates Boston from Watertown and the majority of Cambridge, and the mass of Boston from its own Charlestown neighborhood. To the east lie Boston Harbor and the Boston Harbor Islands National Recreation Area (which includes part of the city's territory, specifically Calf Island, Gallops Island, Great Brewster Island, Green Island, Little Brewster Island, Little Calf Island, Long Island, Lovells Island, Middle Brewster Island, Nixes Mate, Outer Brewster Island, Rainsford Island, Shag Rocks, Spectacle Island, The Graves, and Thompson Island). The Mystic River separates Charlestown from Chelsea and Everett, and Chelsea Creek and Boston Harbor separate East Boston from Downtown, the North End, and the Seaport. The Neponset River forms the boundary between Boston's southern neighborhoods and the city of Quincy and the town of Milton. <SEP> water covers 71% of the earth's surface. it is vital for all known forms of life. on earth, 96.5% of the planet's crust water is found in seas and oceans, 1.7% in groundwater, 1.7% in glaciers and the ice caps of antarctica and greenland, a small fraction in other large water bodies, 0.001% in the air as vapor, clouds (formed of ice and liquid water suspended in air), and precipitation. only 2.5% of this water is freshwater, and 98.8% of that water is in ice (excepting ice in clouds) and groundwater. less than 0.3% of all freshwater is in rivers, lakes, and the atmosphere, and an even smaller amount of the earth's freshwater (0.003%) is contained within biological bodies and manufactured products. a greater quantity of water is found in the earth's interior. <SEP> winnapaug pond (also known as brightman pond) is a breached saltwater lagoon in westerly, rhode island, united states, connected to block island sound by the weekapaug breachway, which was constructed during the mid-1950s. the lake is separated from the atlantic by a large sandbar. the atlantic side of the sandbar is lined by beaches, including misquamicut beach, atlantic beach, and westerly town beach. in 2010, its overall water quality was assessed as "good". winnapaug is relatively small and shallow, and is favorable for kayaking. it is one of nine coastal lagoons, referred to as "salt ponds" by locals, in southern rhode island. <SEP> Based on the novels of Phoebe Atwood Taylor (writing as Alice Tilton), the 30-minute dramas were produced by Roger Bower and starred Walter Hampden as Leonidas Witherall, a New England boys' school instructor in Dalton, Massachusetts, a fictional Boston suburb. Witherall, who resembled William Shakespeare, is an amateur detective and the accomplished author of the "popular Lieutenant Hazeltine stories." <SEP> This novel is a mystery of the type known as a whodunnit. Sandbar Sinister, first published in 1934, is a detective story by Phoebe Atwood Taylor which features her series detective Asey Mayo, the "Codfish Sherlock".