gis-l: National Hydrography Dataset (NHD) Update

Anderson, David S. (WRM) David.S.Anderson at dep.state.fl.us
Thu Mar 8 12:31:04 EST 2007


GIS Users,

We will be updating the Florida NHD layers on Saturday, 3-10-2007. We will be
adding features to this dataset (refer to the table below) and layer names
and schema will remain the same.  The update will begin at approximately
10:00 AM EDT and we expect to have the updated layer loaded before the
beginning of the business day Monday (3-12-07). A full GIS-L announcement
will be sent at a later time.

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.Region	0	0	
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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