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National Estuarine Research Reserves - Guana - Tolomato - Matanzas

Guana Tolomato Matanzas National Estuarine Research Reserve (GTM Research Reserve) is dedicated to the conservation of natural biodiversity and cultural resources through research and monitoring to guide science-based stewardship and education strategies.

GTM Research Reserve protects 73,352 acres south of the city of Jacksonville (Duval County), in St. Johns and Flagler counties on the northeast coast of Florida, one of the fastest-growing regions in the state. These protected areas provide habitat for a variety of fish and wildlife. A species list recently compiled for Guana River Marsh Aquatic Preserve indicated the presence of at least 44 mammal, 358 bird, 41 reptile, 21 amphibian, 303 fish and 580 plant species. The research reserve contains habitats essential to 48 protected animals and eight protected plants. GTM Research Reserve is important for the economy because these include 16 species that are fished or harvested commercially and 18 species that are fished recreationally.

GTM Research Reserve is geographically separated into a northern and southern component, separated by the city of St. Augustine. The northern component (referred to locally as Guana) is associated with the Tolomato and Guana River estuaries, and the southern component is associated with the Matanzas River.


St. Johns and Flagler counties


73,352 acres


GTM Research Reserve 
Visitor Center 
505 Guana River Road 
Ponte Vedra Beach, FL 32082 
Fax: 904-825-6829

Coastal Training:
Asst. Manager:


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