Matanzas Bay is a saltwater bay in
St. Johns County, Florida
St. Johns County is a county in the First Coast, northeastern part of the U.S. state of Florida. As of the 2020 United States Census, its population was 273,425. The county seat and largest incorporated city is St. Augustine, Florida, St. August ...
; the entrance to the bay from the
South Atlantic
The Atlantic Ocean is the second-largest of the world's five oceans, with an area of about . It covers approximately 20% of Earth's surface and about 29% of its water surface area. It is known to separate the " Old World" of Africa, Europe an ...
is via St. Augustine inlet. Bodies of water that connect to the bay in addition to the South Atlantic are clockwise from the inlet:
*Salt Run: an inlet of
Anastasia Island
Anastasia Island is a barrier island located off the northeast Atlantic coast of Florida in the United States. It sits east of St. Augustine, running north–south in a slightly southeastern direction to Matanzas Inlet. The island is about long ...
creating a
peninsula
A peninsula (; ) is a landform that extends from a mainland and is surrounded by water on most, but not all of its borders. A peninsula is also sometimes defined as a piece of land bordered by water on three of its sides. Peninsulas exist on all ...
of the eastern portion of
Anastasia State Park
Anastasia State Park is a state park in Florida, United States. Its location is on a peninsula on Anastasia Island across Matanzas Bay from downtown St. Augustine along the Atlantic coastal plain. This park has a variety of wildlife, birds and pl ...
.
*
Matanzas River
The Matanzas River is a body of water in St. Johns and Flagler counties in the U.S. state of Florida. It is a narrow saltwater bar-bounded estuary sheltered from the Atlantic Ocean by Anastasia Island.
The Matanzas River is in lengthU.S. Geolo ...
: a tidal channel; part of the
Intracoastal Waterway
The Intracoastal Waterway (ICW) is a inland waterway along the Atlantic and Gulf of Mexico coasts of the United States, running from Massachusetts southward along the Atlantic Seaboard and around the southern tip of Florida, then following th ...
which flows in an easterly direction then south for approximately 15 miles, separating Anastasia Island from the mainland. Another tidal channel the
San Sebastian River flows westerly from the Matanzas River creating a peninsula of the original Spanish era section of St. Augustine.
*Hospital Creek: tidal channel flowing north from confluence of Matanzas Bay and North River. Creek in which
Pedro Menéndez de Avilés
Pedro Menéndez de Avilés (; ast, Pedro (Menéndez) d'Avilés; 15 February 1519 – 17 September 1574) was a Spanish admiral, explorer and conquistador from Avilés, in Asturias, Spain. He is notable for planning the first regular trans-oceani ...
sailed into and initially established St. Augustine on its mainland shore.
*Tolomato River (also known locally and historically in the British period as the North River): tidal channel flowing north
[
Inside route pilot By U.S. Coast and Geodetic Survey, Leon Archie Potter, Herbert Cornelius Graves p. 70]
*Municipalities:
St. Augustine and Vilano Beach.
*Tides: The average fall of the tides in Matanzas Bay is 4.5 feet between high and low tide.
*Bridges: State road
A1A
State Road A1A (SR A1A) is a major north–south Florida State Road that runs along the Atlantic Ocean, from Key West at the southern tip of Florida, to Fernandina Beach, just south of Georgia on Amelia Island. It is the main road throug ...
crosses the bay via the
Bridge of Lions
The Bridge of Lions is a double-leaf bascule bridge that spans the Intracoastal Waterway in St. Augustine, Florida, United States. A part of State Road A1A, it connects downtown St. Augustine to Anastasia Island across Matanzas Bay. A pair of ...
which connects the mainland portion of St. Augustine with the portion of the city located on Anastasia Island.
*Wetlands: A large portion of the
tidal wetlands directly fronting the bay have been obliterated due to construction of the seawall in the old quarter of St. Augustine and the construction of Davis Shores a residential development created on reclaimed land on Anastasia Island and a subsequent seawall. The portions of the Intracoastal Waterway connected to Matanzas Bay have wetlands of varying amounts and degrees of natural state.
*Parks:
Castillo de San Marcos
The Castillo de San Marcos (Spanish for "St. Mark's Castle") is the oldest masonry fort in the continental United States; it is located on the western shore of Matanzas Bay in the city of St. Augustine, Florida.
It was designed by the Spanish ...
National Monument, Spanish era fort completed in 1675 and
Anastasia State Park
Anastasia State Park is a state park in Florida, United States. Its location is on a peninsula on Anastasia Island across Matanzas Bay from downtown St. Augustine along the Atlantic coastal plain. This park has a variety of wildlife, birds and pl ...
.
References
{{coord, 29.9071, -81.2976, display=title
St. Augustine, Florida
Bodies of water of St. Johns County, Florida
Bays of Florida on the Atlantic Ocean