USGS Quad boundary ARCS are not coincident with contiguous Quad boundary arcs.doi:Server=earth; Service=esri_sde; User=gislib; Version=SDE.DEFAULTSjrwmdSt. Johns River Water Management Districtdownloadable dataManagement District (SJRWMD). 2000. Elevation: SJRWMD 5 FT Contour - Water - 1987...