Seasonal Nutrient Import-Export Budgets for the Lower St. Johns River, Florida

The St. Johns River is the third largest river in Florida, and the largest located entirelywithin the State, encompassing about a fifth of its area in its 9,562 mi2 drainage basin.The lower St. Johns is that portion of the river below the mouth of the OcklawahaRiver, its largest tributary, and the Atlantic Ocean, encompassing a 2,750 mi2drainage area. Major centers of population within the lower St. Johns River basininclude Palatka, a city of 10,700 at the southern entrance to the basin; Green CoveSprings, a city of 4,700 at the midpoint; and the Orange Park, Middleburg andJacksonville metropolitan area, with a population of over 1 ,000,000, at the northernterminus (University of Florida, 1997). The lower St. Johns is a sixth order,darkwater river estuary, and exhibits characteristics associated with riverine,lacustrine, and estuarine aquatic environments.

Publisher - St. Johns River Water Management District (SJRWMD)

Subjects - Chemical, Nutrients

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Citation: Hendrickson J, Konwinski J. 1998. Seasonal Nutrient Import-Export Budgets for the Lower St. Johns River, Florida. Palatka (FL): St. Johns River Water Management District (SJRWMD); Contract WM598. 109 pp http://waterinstitute.ufl.edu/WorkingGroups/TCAA/downloads/Hendrickson_and_Konwinski_1998.pdf