The Na'onal Atlas of the United States 1:1,000,000-­‐Scale Hydrography Dataset

By Florence Thompson

Transcript

1. The  Na'onal  Atlas  of  the  United   States  1:1,000,000-­‐Scale   Hydrography  Dataset:     Data  Visualiza'on,     Linking  to  External  Data  Sources,   Tracing  Streams  in  a  Web  Mapping   Applica'on   Florence  Thompson,  USGS  Texas  Water  Science  Center  
2. www.na'onalatlas.gov  
3.  Million-­‐scale  Data   •  Coastlines   •  Streams   •  Waterbodies  and  Wetlands   •  Stream  Gaging  Sta'ons   •  Roads   •  Railroads   •  Airports   •  Ports   •  Ferries   •  Interna'onal  Boundaries   •  State  Boundaries   •  County  Boundaries   •  Ci'es  and  Towns   •  Eleva'on   •  Landcover   Na'onal  extent,  Ver'cally  integrated,  Currently   available  as  shapefiles  
4. Million-­‐scale  Data  Availability   Available  soon:   – Geodatabases  with  networked  hydrography   – Web  Map  Services   – Web  Feature  Services   – Web  Coverage  Services   – Federal  Lands,  Congressional  Districts,  Indian   Lands,  Urban  Areas,  U.S.  Sta's'cal  Areas  
5. Million-­‐scale  Hydro  Data  
6. Na'onal  Hydrography  Dataset  
7. Medium  Resolu'on  NHD  (100K)  
8. High  Resolu'on  NHD  (24K)  
9. NHD  Model  
11. Link  to  NHD  and  NHDPlus  with  the   ReachCode  and  ComID   ComID   ComID   Reach Code   Reach Code   NHD   Million-­‐scale   Streams  
12. Uniform  Symbology  
13. Symbolized  Using  NHDPlus  Mean   Annual  Flow    
14. Iden'fy  a  Stream  Gage  and  Link  to  NWIS  
15. Na'onal  Water  Informa'on   System  
16. Download  NWIS  Data  using  NWIS   Snapshot  Add-­‐in  for  ArcMap  
17. Prototype  Stream  Tracing  Web   Applica'on   hZp://txpub.usgs.gov/hydrotrace/  
18. •  ESRI  ArcGIS  Server  Javascript  3.0  API   •  ArcGIS  Server  10.0   •  SQL  Server  2008  R2   •  Hybrid  Upstream  Trace  methodology  uses   FromNodes  and  ToNodes  in  a  table  and   FromWatersheds  and  ToWatersheds  in   another  table  
21. Hybrid  Upstream  Trace   •  Start  tracing  stream  by  stream  using  FromNode   and  ToNode  aZributes  in  a  table.   •  If  a  stream  has  an  aZribute  showing  that  it  leads   to  an  upstream  watershed  then  the  trace   algorithm  switches  to  tracing  watershed  by   watershed  using  FromHUC  and  ToHUC  in  a  table.   •  Traced  streams  in  many  watersheds  have  been   saved  as  map  services.   •  The  services  are  turned  on  if  the  watershed  is   included  in  an  upstream  trace.    
22. Traces  staged  as  map  services  
23. Features  to  be  Added  to  the  Streamer   Web  App   •  Reports  with  maps  and  stats   •  Iden'fy  Tool   •  Text  Search  Tool   •  Real-­‐'me  stream  gages  symbolized  by  flow   •  Improved  Base  Maps  
24. Florence  Thompson,   fethomps@usgs.gov   hZp://txpub.usgs.gov/hydrotrace/   www.na'onalatlas.gov