Oyster Pond River, also called Oyster Creek, is a 1.7 miles (2.7 km) river in Chatham, Massachusetts

Chatham, Massachusetts

Chatham is a town in Barnstable County, Massachusetts, United States, Barnstable County being coextensive with Cape Cod. The population was 6,625 at the 2000 census...

 on Cape Cod

Cape Cod

Cape Cod, often referred to locally as simply the Cape, is a cape in the easternmost portion of the state of Massachusetts, in the Northeastern United States...

.

The river is an estuary

Estuary

An estuary is a partly enclosed coastal body of water with one or more rivers or streams flowing into it, and with a free connection to the open sea....

 connecting Oyster Pond with Stage Harbor, averaging 3 to 5 ft (0.9144 to 1.5 ) in depth and bordered with salt marsh

Marsh

In geography, a marsh, or morass, is a type of wetland that is subject to frequent or continuous flood. Typically the water is shallow and features grasses, rushes, reeds, typhas, sedges, other herbaceous plants, and moss....

es. Both river and pond provide excellent anchorage. According to an assessment for the Massachusetts Estuaries Project, its total surface area is 88.1 acres (356,528.4 m²).