Data Stewardship and Maintenance for the National Hydrography Dataset USGS/INEGI Cross-Border Integration Project Cross-Border Integration Project U.S. Department of the Interior U.S. Geological Survey
Missing in the picture - Manuel Mavila(USGS), Kim Jones (USGS) and Miguel Pavon (Texas )
Pilot Project Subbasin Hydrographic features do not recognize political boundaries!
Project Overview: 31 Subbasins Data processing will begin in California and progress East
Phase One: Edge Matching USGS will extract subbasins and edge match NHD to INEGI hydro net ● Notify/discuss with INEGI where hydro net needs to be adjusted on Mexico side. ● Submit updates to NHD database
Spatial allignment where feature exists in both datasets Edge Matching
Content additions – INEGI, Hydrographic Network
Edge Matching Content additions – USGS, National Hydrography Dataset
Phase Two: Integrating INEGI Hydrographic Network with USGS National Hydrography Dataset USGS will extract subbasins and use ETL tool to integrate INEGI data into the NHD model & Crosswalk data. ●Track all additions as “Add Feature” in NHDStatus table ● Allocate NHD reach codes for all new reachable features ● Add WBAreaComID to all artificial paths
Note: Common Identifier (ComID) in current model will be retained as secondary identifier. Globally Unique Identifier (GUID) in NHD BP model will become the Permanent Identifier Utilizing NHD in Best Practices model to cross-walk data
Converting INEGI Feature Class to NHD FType/FCode
Source (Canada Shapefiles) Tranformers Destination (NHD Feature Classes) FCode Crosswalk FCode Filter NHDWaterBody NHDArea Attribute Creator Example Tool …. (From Canada Pilot) FME/ETL
Maintenance: INEGI will have access to NHD updates through data extracts National Map Viewer – URL TBD USGS will establish Area of Interest (AOI) for INEGI who will be notified by when updates occur within cross-border subbasins on the US side USGS will be notified by INEGI when updates occur within cross-border subbasins on the Mexico side –send shapefiles?