National Hydro Network (NHN) - 227 new watersheds

December 6, 2017

Publication of 227 NHN datasets, including 151 new watersheds at the completeness level NHN_CL3 and 76 improved NHN watersheds. With the publication of these watersheds, Canada is now almost entirely covered by NHN_CL2 or NHN_CL3 data, allowing analysis of hydrological networks.

52 new NHN_CL3 watersheds in the Atlantic provinces have been added to complete the NHN_CL3 coverage for the following provinces: Prince Edward Island, Newfoundland and Labrador, and Nova Scotia.

With the addition of 10 new NHN_CL3 watersheds in the Northwest Territories (NT), all NT watersheds are now NHN_CL3.

Also, 89 new NHN_CL3 watersheds have been added to Nunavut (NU), so over 95% of the NU watersheds are now NHN_CL3.

Furthermore, 20 NHN_CL2 or NHN_CL3 watersheds were produced to correct discrepancies.

As part of our regular maintenance activity, several watersheds have been regenerated to redefine watershed limits.

For more information, please consult the document National Hydro Network (NHN) - Release Note.