Canada's surface water frequency
Data represents surface water occurrence frequency (percentage), which describes the frequency for each grid appeared as water in the 30 years time period of 1991 to 2020. The data covers Canada’s entire landmass including all transboundary watersheds, and is at 30-meter spatial resolution. The surface water occurrence frequency is derived using the surface water model of Wang et al. (2023) from all-available monthly water data observed by the Landsat satellites (Pekel et al., 2016). Here, permanent waters are represented by 100%, and permanent land surfaces by 0%, of water occurrence for a 30-meter by 30-meter grid.
References:
Pekel, J.-F., A. Cottam, N. Gorelick, A.S. Belward, 2016, High-resolution mapping of global surface water and its long-term changes. Nature, 540, 418-422.
Wang, S., J. Li, and H. A. J. Russell, 2023, Methods for Estimating Surface Water Storage Changes and Their Evaluations. Journal of Hydrometeorology, DOI: https://doi.org/10.1175/JHM-D-22-0098.1.
- Publisher - Current Organization Name: Natural Resources Canada
- Licence: Open Government Licence - Canada
Data and Resources
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STAC APIHTMLEnglish French api HTML
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Surface Water Frequency Maps of Canada from 1991-2020WMSEnglish web_service WMS
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Surface Water Frequency Maps of Canada from 1991-2020WMSFrench web_service WMS
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Surface Water Frequency Maps of Canada from 1991-2020TIFFNo linguistic content; Not applicable dataset TIFF
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Surface Water Frequency Maps of Canada from 1991-2020WCSEnglish French web_service WCS
Contact Information
Delivery Point: 580 Booth Street
City: Ottawa
Administrative Area: Ontario
Electronic Mail Address: shusen.wang@nrcan-rncan.gc.ca