<Table> <Tr> <Td_colspan="2"> St. Johns River </Td> </Tr> <Tr> <Td_colspan="2"> St. Johns River near Astor </Td> </Tr> <Tr> <Td_colspan="2"> Name origin: Spanish: San Juan del Puerto </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th> Country </Th> <Td> United States </Td> </Tr> <Tr> <Th> State </Th> <Td> Florida </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Td_colspan="2"> Tributaries </Td> </Tr> <Tr> <Td> - left </Td> <Td> Mills Creek River, Econlockhatchee River, Wekiva River, Alexander Springs, Salt Springs Run, Ocklawaha River, Rice Creek / Simms Creek, Black Creek (Clay County), Ortega River, Trout River </Td> </Tr> <Tr> <Td> - right </Td> <Td> Murphy Creek / Dunn's Creek, Julington Creek, Pottsburg Creek, Intracoastal Waterway / Sisters Creek </Td> </Tr> <Tr> <Th> Cities </Th> <Td> Sanford, Deltona, DeLand, Palatka, Green Cove Springs, Orange Park, Jacksonville </Td> </Tr> <Tr> <Th> Landmarks </Th> <Td> Blue Cypress Lake, Lake Hell' n Blazes, Sawgrass Lake, Lake Washington, Lake Winder, Lake Poinsett, Lake Harney, Lake Jesup, Lake Monroe, Lake Beresford, Lake Woodruff, Lake George, Doctors Lake </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th> Source </Th> <Td> St. Johns Marsh </Td> </Tr> <Tr> <Td> - location </Td> <Td> near Vero Beach, Indian River County, Florida </Td> </Tr> <Tr> <Td> - elevation </Td> <Td> 30 ft (9 m) </Td> </Tr> <Tr> <Td> - coordinates </Td> <Td> 27 ° 57 ′ 18" N 80 ° 47 ′ 3" W ﻿ / ﻿ 27.95500 ° N 80.78417 ° W ﻿ / 27.95500; - 80.78417 </Td> </Tr> <Tr> <Th> Mouth </Th> <Td> Atlantic Ocean </Td> </Tr> <Tr> <Td> - location </Td> <Td> Jacksonville, Duval County, Florida </Td> </Tr> <Tr> <Td> - elevation </Td> <Td> 0 ft (0 m) </Td> </Tr> <Tr> <Td> - coordinates </Td> <Td> 30 ° 24 ′ 05" N 81 ° 24 ′ 3" W ﻿ / ﻿ 30.40139 ° N 81.40083 ° W ﻿ / 30.40139; - 81.40083 Coordinates: 30 ° 24 ′ 05" N 81 ° 24 ′ 3" W ﻿ / ﻿ 30.40139 ° N 81.40083 ° W ﻿ / 30.40139; - 81.40083 </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th> Length </Th> <Td> 310 mi (500 km) </Td> </Tr> <Tr> <Th> Basin </Th> <Td> 8,840 sq mi (22,900 km) </Td> </Tr> <Tr> <Th> Discharge </Th> <Td> for Mayport, Florida </Td> </Tr> <Tr> <Td> - average </Td> <Td> 15,000 cu ft / s (400 m / s) </Td> </Tr> <Tr> <Td> - max </Td> <Td> 150,000 cu ft / s (4,200 m / s) </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Td_colspan="2"> St. Johns River surrounding with corresponding watersheds designated by the St. Johns River Water Management District: 1 . Upper basin, 2 . Middle basin, 3 . Lake George basin, 4 . Lower basin, 5 . Ocklawaha River basin </Td> </Tr> <Tr> <Td_colspan="2"> Wikimedia Commons: St. Johns River </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> </Table> <Tr> <Td_colspan="2"> St. Johns River </Td> </Tr>

Where does the st johns river start and end
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