NHN Prototypes

1. Canada/USA Cross-Border NHN Dataset - Pembina River Watershed

At the Canada/USA boundary, both countries respective hydrographic data must be fused to allow producing complete drainage areas located on both sides of the border. A NHN data prototype was created in 2009 in the Pembina river watershed area, using source data from the province of Manitoba on the Canadian side of the border and United States Geological Survey (USGS) NHD data on the American side. This prototype is available in Shape format (in English only) at the following FTP address:

ftp://ftp.ctis.nrcan.gc.ca/pub/partnership/mb/wtp_515/Complete_Can_US_Pembina/NHN/

Differences

Known particularities, deviations or differences found in this Pembina NHN data prototype as opposed to the National Hydro Network standards and specifications are listed here. Due to content variants between the NHN and the NHD (National Hydrography Dataset, USA), NHN differences between the American and Canadian portions of the NHN dataset exist. These differences in the American portion of the dataset are:

  • No Network Linear Flow (NLF) features with a "Secondary" Priority Level attribute value (model content difference);
  • No NLF features in "Isolated" Waterbody features (model content difference); and
  • Some "Inferred" type NLF features (normally found within Waterbody features) are located on land (error detected in NHD data).

Poster

The Pembina river watershed NHN data prototype is illustrated on a poster available in PDF format [pdf, 602 Kb].

For More Information

Refer to section "Fusion with American Data" on the Status and Plan web page, which can be found under the NHN Implementation page.