gis-l: Florida NHD data updated

[Anderson, David S. (WRM)]

GIS Users,

 

This past weekend the Florida NHD (National Hydrography Dataset) layers were
updated with data from January 2007. The changes are reflected below and
should not affect any project or application pointing to these layers. The
geometric network and junctions for the NHDFlowline is available via SDE.

 

Feature Dataset: NHD.Hydrology

 

Feature Class                Old # of Features           New # of Features


NHD.NHDArea               10,962                          11,335     

NHD.NHDFlowline          715,766                         831,153    

NHD.NHDLine                8,724                            8,724       

NHD.NHDPoint              1,429                            1,429       

NHD.NHDWaterbody      581,473                         649,802 

 

Most updates will be seen in the SJRWMD region.

 

Feature Dataset: NHD.HydrologicUnits

 

Feature Class                Old # of Features           New # of Features


NHD.Basin                    14                                 15


NHD.Subbasin               68                                 79            

NHD.Subregion              8                                  8             

NHD.Subwatershed        474                               927          

NHD.Watershed             98                                 186

 

Additional features added above the FL/GA border.

 

 

David S. Anderson

NHD Coordinator (ES III)

Voice: (850) 245-8550

David.S.Anderson at dep.state.fl.us

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