Integrating Water-Related Data with USGS National Hydrography Dataset
Discover how to link water-related events with the USGS National Hydrography Dataset (NHD) using linear referencing. Learn how this integration enhances data intelligence, facilitates sharing, and enables data discovery. Explore examples of events and understand the significance of reachcodes and measures in addressing water data.
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Presentation Transcript
Hydrography Dataset Events InterMountain GIS 2014 NHD Workshop April 7, 2014
Examples of events Essentially any water-related data that can be given a location: Aquatic species habitat Stream gage Water quality station Temperature measurement Water rights Recreation designations Fish distribution Wildlife sightings Pollution control classifications A study or news article many more
Reachcodes and measures provide an address for events EVENT Figure source: USGS National Hydrography Dataset- Linear Referencing , online PDF
Like a house address ZIPCODE STREET House Number Figure source: USGS National Hydrography Dataset- Linear Referencing , online PDF
Events add intelligence to the Hydrography Dataset Figure source: USGS National Hydrography Dataset- Linear Referencing , online PDF
Take Home Messages The NHD provides a universal system for linking, or addressing, data (linear referencing) Addressing water data (events) to the NHD integrates your data with other data, facilitates data discovery, and increases sharing opportunities Linear referencing adds intelligence to your data (and, vice versa, your data add intelligence to the NHD)
USGS Video Linear Referencing (4:21) http://nhd.usgs.gov/videos_demos.html#.U07AuF cVAwA HEM tools (3:43) http://gallery.usgs.gov/videos/453#.UzXJRVemX5M
