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USGS Map Key

This key contains selected symbols used on United States Geological Survey Maps and on Florida Soil Maps based on USGS Maps. In general, relief features are printed in brown, water features are printed in blue, and cultural features are printed in black.

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Contours (Contours showing depth of water printed in blue)

Depression contours


Mine dumps

Trailings or mining debris

Sand and sand dunes


Falls and rapids

Intermittent streams and ditches

Canals or ditches

Unsurveyed stream and abandoned canal

Intermittent lake

Spring, Well


Submerged marsh

Lake or pond

Roads and buildings

Good public road

Poor public or private road


Power transmission line


Breakwater and jetties



Ferry (point upstream)

Canal lock (point upstream)

State line

County line

Civil Township or district line

Reservation line

Land grant line

City, village, or borough line

Small park or cemetery line


Electric railroad


Dam with lock

Mine or quarry


Church, School (distinguished on recent maps)

Lighthouse or beacon

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