East Bay is a bay

Bay

A bay is an area of water mostly surrounded by land. Bays generally have calmer waters than the surrounding sea, due to the surrounding land blocking some waves and often reducing winds. Bays also exist as an inlet in a lake or pond. A large bay may be called a gulf, a sea, a sound, or a bight...

 located in the far western Florida Panhandle

Florida Panhandle

The Florida Panhandle, an informal, unofficial term for the northwestern part of Florida, is a strip of land roughly 200 miles long and 50 to 100 miles wide , lying between Alabama on the north and the west, Georgia also on the north, and the Gulf of Mexico to the south. Its eastern boundary is...

.

Milton

Milton, Florida

Milton , or Milltown, because Milton had the largest mill around) is a city in Santa Rosa County, Florida, United States. The city was incorporated in 1844 and is home to Naval Air Station Whiting Field. The population was 7,045 at the 2000 census. In 2004, the population recorded by the U.S...

, which is the county seat

County seat

A county seat is an administrative center, or seat of government, for a county or civil parish. The term is primarily used in the United States....

 of Santa Rosa County

Santa Rosa County, Florida

Santa Rosa County is a county located in the U.S. state of Florida. According to the 2000 U.S. Census, the population was 117,743, while a July 1, 2005, estimate placed the population at 143,105, an 18% increase making it the 84th fastest growing county in the United States between 2000 and 2005. ...

, is located on the north end of the bay. Unusually, East Bay is connected to open waters via Pensacola Bay

Pensacola Bay

Pensacola Bay is a bay located in the northwestern part of Florida, United States, known as the Florida Panhandle.The bay, an inlet of the Gulf of Mexico, is located in Escambia County and Santa Rosa County, adjacent to the city of Pensacola, Florida, and is about 13 miles long and 2.5 miles ...

 to its southwest. The bay is fed primarily by the Blackwater River

Blackwater River (Florida)

The Blackwater River of Florida is a river rising in southern Alabama and flowing through the Florida Panhandle to the Gulf of Mexico. The river enters Florida in Okaloosa County and flows through Santa Rosa County to Blackwater Bay, an arm of Pensacola Bay. The river passes through Blackwater...

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During Hurricane Ivan

Hurricane Ivan

Hurricane Ivan was a large, long-lived, Cape Verde-type hurricane that caused widespread damage in the Caribbean and United States. The cyclone was the ninth named storm, the sixth hurricane and the fourth major hurricane of the active 2004 Atlantic hurricane season...

's landfall in September 2004, the storm surge

Storm surge

A storm surge is an offshore rise of water associated with a low pressure weather system, typically tropical cyclones and strong extratropical cyclones. Storm surges are caused primarily by high winds pushing on the ocean's surface. The wind causes the water to pile up higher than the ordinary sea...

 from the Gulf of Mexico

Gulf of Mexico

The Gulf of Mexico is a partially landlocked ocean basin largely surrounded by the North American continent and the island of Cuba. It is bounded on the northeast, north and northwest by the Gulf Coast of the United States, on the southwest and south by Mexico, and on the southeast by Cuba. In...

came in to East Bay, flooding the shoreline of the bay.