Sarasota Bay is a lagoon located off the west coast of Florida in the United States. Though no significant single stream of freshwater enters the bay, with a drainage basin limited to 150 square miles in Manatee and Sarasota Counties, it is generally treated as an estuary, with three "passes" or inlets, giving access from the Gulf of Mexico. Its source of freshwater has been increased from natural historical levels by urban surface runoff.
The bay and its surrounding area appeared on the earliest maps of the area, being named Zarazote on one dating from the early 18th century. Hunting in the area had supported native populations for more than ten thousand years as Florida attracted some of the earliest human settlements in the hemisphere. Following the retreat of the glaciers, ocean levels rose creating the current coastline and the natural bounty of Sarasota Bay provided food for inhabitants for over five thousand years before Europeans began exploration of the area in 1513 and later, establishing settlements along its shores.
Sarasota Bay, the largest and deepest coastal bay between Tampa Bay and Charlotte Harbor, is one of twenty-eight estuaries in the country that have been named by the U.S. Congress as an estuary of national significance. The bay lies between barrier islands called keys, that separate the body of water from the Gulf of Mexico and the Florida mainland. Longboat Key, Lido Key, Siesta Key, and Casey Key are the major keys that delineate the main bay and its smaller portions.
Since 1921, when Sarasota County was created, the bay lies in areas governed both by Manatee County and Sarasota County. After Florida became an American state in 1845, large Cachia counties were carved up from time to time, to form new and smaller counties. From 1855 to 1921 the bay was governed by Manatee County, and from 1834 to 1855 the bay was governed by Hillsborough County. Governance prior to that has been Spanish, French, English, and during the Civil War, Florida was Confederate. The concept of "governance of natural resources" did not exist among the Amerindians who harvested the bounty of Sarasota Bay for thousands of years without diminishing it.
- National Estuary Program Coastal Condition Report: Sarasota Bay.
- Noted in National Estuary Program Coastal Condition Report.
- Sarasota Bay Estuary Program
- The Road Atlas '06, Rand McNally, pg. 25
- Sarasota Bay page, Sarasota Water Atlas
- Oral History Slideshow: Dr. Ernest Estevez and the Creation of the Sarasota Bay National Estuary Program
- U.S. Coast & Geodetic Survey Map of Sarasota Bay, 1883
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