聖約翰河

聖約翰河（）是美國佛羅里達州境內最長的河流，以發展商業和休閒娛樂產業為重。它長達，河幅寬跨12個縣，其中包含佛州最大的3個縣別。聖約翰河河源至入海口的垂直海拔差約低於；和多數佛州的水路一樣，流速緩，約，被當地人稱為「懶惰河」。它是美國少數流向自南向北的河川。聖約翰河水道範圍形成許多湖泊，或匯流至河中，但河道最寬處只有，橫跨帕拉特卡和傑克遜維爾，後者更是聖約翰河畔最大的都市區。它的最窄處位於源頭，為印第安河縣內一個無法航行的沼澤濕地。聖約翰河流域內總計約有3500萬人棲居。

註釋

引文

參考文獻 
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佛罗里达州河流