May be of interest:

North America Water Watch:

USGS and Canada Reach Confluence in Monitoring Streamflow

Linking U.S. and Canadian Border Waters
Seamless digital maps of surface waters completed along the Canada and United States International Boundary

Let me know if you need more information!

Enjoy the day!

Emily Wild
Librarian (Physical Scientist)
U.S. Geological Survey
Denver Library
Box 25046, MS 914
Denver Federal Center
Denver, CO 80225-0046
ph: (303) 236-1003
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