WQX and NHD+V2. ABE 527 January 2013 Larry Theller. WQX. What is WQX How is it used Original concept for data upload Current “state of the art” data loader Process flow Data loader upgrades created for this project Future Tool (2 year NEIEN project). NHD+ V2. What is NHD+ V2
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Authenticated upload to staging database
QC done and Reformat to XML
Current WQX Web Design
Authenticated XML upload to CDX
2011 Activity - Results
2010Activity - Results
2009 Activity - Results
The National Hydrography Dataset (NHD) is the surface water component of The National Map.
The Hydrography Event Management (HEM) Tool provides full functionality for adding and editing events in the NHD.
Events are informational data that are linked to the NHD using a linear referencing system on NHDFlowlines.
The use of events is a key characteristic of the NHD by allowing vast amounts of scientific information to be linked to the NHD while keeping the design simple and by making advanced analysis techniques possible.
The HEM tool handles all the linear referencing mechanics to make working with events easy.
A Source Feature ID is created that provides the link between the event location and the informational data tied to the location. It also creates metadata linked to the event.
The tool also provides network measuring to determine distances through the flowline network.
Developer: Department of the Interior - Bureau of Land Management
Reach CODE and you can select downstream water features.
Additional Information: http://www.epa.gov/waters/data/prog.html
* Currently database only service
Additional Information: http://www.epa.gov/waters/geoservices/index.html