One local water feature is the Peconic River. It is roughly 15 miles in length and the mouth of the river is the Peconic Bay. According to the Peconic Estuary Partnership, the Peconic Estuary was formed over thousands of years and from the advance and retreat of the Wisconsin glacier 22,000 years ago. It is a freshwater river until it reaches river head where it turns into an estuary. Estuaries are extremely important to the natural wildlife of communities as they act as nurseries for a diverse array of animals and organisms. This water feature related to human design, planning and architecture because any structures surrounding the estuary have to be sure that toxic runoff water does not flow from their establishment to the estuary. Connected to the Peconic River and Bay is the Shinnecock Canal which was man made in 1892. To deal with the tidal differences between Peconic Bay and Shinnecock Bay tidal gates were used to reduce the effects of flooding. Today, a canal lock is used. A canal lock is a device that raises, and lowers boasts into different waterways. The purpose of this is to help a boat cross a canal where the land is not level.
One similarity that Delta Urbanisms pointed out was in Chapter 4 regarding the Transformation of Estuaries. Like that of the Peconic River, it turns into an estuary roughly around the town of Riverhead. Since estuaries are so important to the geography and environment, Peconic Bay and River and its surrounding business are geared more towards tourism, nature walks, and recreational marinas.