Little Narragansett Bay
Little Narragansett Bay is an inlet of the Atlantic Ocean and an estuary of the Pawcatuck River on the Rhode Island-Connecticut state line. It is sheltered by a curving peninsula, known as Napatree Point.
At the base of Napatree Point is the site of the resort village of Watch Hill, Rhode Island. The bay also contains the islands of Sandy Point, Elihu Island, and Barn Island. Sandy Point was once part of Napatree Point until the two were separated by the Hurricane of 1938. Since that time it has migrated north and west, and changed orientation. It now begins about 1/4 mile east of Stonington Borough, and runs approximately 1+1⁄2 miles east-southeast.
In 1662, Connecticut's royal charter delineated the easternmost border of the state as Narragansett Bay. However, a 1663 royal charter defined the western border of Rhode Island as the Pawcutuck River, which lies west of Narragansett Bay. In order to resolve the conflicting definitions, King Charles renamed the Pawcutuck River to "Little Narragansett Bay". Connecticut disputed the boundaries, leading to Conservator of the Peace being appointed in 1665. In 1703, a Board of Commissioners upheld the Pawcatuck River as the border between Rhode Island and Connecticut. The issue was finally resolved in 1840 when a joint survey was conducted and Connecticut ratified the boundaries.
The bay has a large infestation of Cladophora algae, which gives off a sulfurous odor in certain conditions. The algae is also ruinous to native sea plants and therefore to the fish and shellfish such as the native quahog. 
- Heppner, Frank H. (2012). "Chapter 2: The Railroad Geography of Rhode Island". Railroads of Rhode Island: Shaping the Ocean State's Railways. Charleston, SC: History Press. ISBN 978-1609493332.
- Stein, Mark (2008). "Connecticut's Eastern Border; Rhode Island's Western Border". How the States Got Their Shapes. New York. pp. 49, 245–246. ISBN 978-1606711453.
- Rhode Island Royal Charter (PDF). 1663.
that the said Pawcatuck river shall be also called alias Norrogansett or Narrogansett river; and, to prevent future disputes, that otherwise might arise thereby, forever hereafter shall be construed, deemed and taken to be the Narragansett river in our late grant to Connecticut Colony mentioned as the easterly bounds of that Colony
- Rhode Island State Planning Board (1936). Rhode Island Boundaries, 1636–1936. pp. 10–11.
- Baron, Robert (26 May 2013). "Surveying Connecticut's Borders". Connecticut History | a CTHumanities Project. Retrieved 20 August 2021.