At Potton Point on Devil's Reach, the Middleway creek, which separates the islands of Potton and Foulness, joins from the south and defines the western edge of Foulness Island. The Middleway creek splits to pass either side of Rushley Island, and becomes Havengore Creek once the two channels rejoin.
The creek at Potton Point on Devil's Reach serves as a dividing line between the islands of Potton and Foulness, with the Middleway creek flowing from the south and forming the western edge of Foulness Island. The creek then splits to encircle Rushley Island before rejoining as Havengore Creek.