News and Events

National Hydrometric Network Basin Polygons

NHS is pleased to announce the preliminary release of a new dataset of drainage basin polygons. The GIS dataset contains the watershed boundaries for over 6000 of the 7896 active and discontinued hydrometric stations across Canada. New stations will continue to be added over the coming months. Further information is available at: https://collaboration.cmc.ec.gc.ca/cmc/hydrometrics/www/HydrometricNetworkBasinPolygons/

Wateroffice Release

The National Hydrological Services of Canada (NHS) is pleased to announce that the Wateroffice release 53 was published on August 7, 2024.

Below are some change requests which have been addressed in this release:

• Provided web service for accessing daily data, enabling users to download data automatically via scripting

https://wateroffice.ec.gc.ca/services/historical_links_e.html

• Updated the URL link for the real-time web service demonstration page (URL for web services did not change)

https://wateroffice.ec.gc.ca/services/real_time_links_e.html

• Fixed the Alberta link on the Wateroffice main page

• Formatted the numeric values in the Measurement Summary below the 'Modify Settings' on the real-time graphic page

• Added 'Location on Map' on the real-time and historical search result page to lead users to the map page displaying geographic locations of the selected stations

• Enabled users to add or remove seasonal stations which are outside their operational period from the real-time map page

• Updated the default behavior to open a station report page in a new tab from the real-time and historical map page

• Removed the reference to the station list impacted by COVID-19 on the map page

• Added web site banners to more real-time pages for better user notifications

• Fixed the layout issue of the Database Down Notice on the real-time text and map search page in the event the database is down

• Removed 'EC region' from the search page to line up with the organizational change

• Updated the FAQ question to remove the reference to 'EC region'

Unit Data (2011 - 2024)

Provisional Unit Data Available (2011 - 2024) is provided on the following site, representing the best available data as of 2024-06-22.

https://collaboration.cmc.ec.gc.ca/cmc/hydrometrics/www/UnitValueData

Subsequent quality assurance and verification procedures may result in differences between what is currently available and what will become official record.

Real-time data continues to be updated to ensure the highest quality approval status, and are available on the Wateroffice website for up to 18 months.

HYDAT Release

The new releases of the HYDAT.mdb and Hydat.sqlite3 dated on October 22, 2024 are now available.

Height Modernization Status

NHS is currently acquiring the GNSS data required to provide conversion factors to the datum CGVD2013 epoch 2010. Conversion factors will be published on WaterOffice as they become available. Thank you for your patience as we modernize our systems.