Dynamic Surface Water Maps of Canada from 1984-2023 Landsat Satellite Imagery

Knowledge of the location of Earth’s surface water in time and space is critical to inform policy decisions on environment, wildlife, and human security. Dynamic surface water maps generally represent water occurrence, also referred to as inundation frequency, depicting the percentage of valid observations when water is detected at the surface. The location and duration of surface water varies from areas of permanent water with 100% inundation frequency where water is always observed, to areas of permanent land with 0% inundation where water never occurs. Between these two extremes are areas of ephemeral water that experience periodic flooding with inundation frequencies between 0-100%. National-scale dynamic surface water information was generated for years 1984-2023 at 30m spatial resolution from the historical Landsat archive over Canada. The complete dataset consists of annual water maps and derived products including inundation frequency and inter-annual wetting and drying trends calculated using per-pixel logistic regression. The complete dataset enables an assessment of the timing, duration, and trends towards wetting or drying at regional to national scales.

Associated publication:

https://www.sciencedirect.com/science/article/pii/S0034425722002358

Date ( RI_368 ): 2024

Date ( RI_367 ): 2022

Date ( RI_366 ): 2020

RI_413

Government of Canada;Environment and Climate Change Canada;National Wildlife Research Centre - Ian Olthof ( Research Scientist )

Purpose: Information on surface water dynamics across Canada provided by this dataset is valuable for a range of audiences, including public safety, government and nongovernment conservation organizations, land managers, and scientific researchers. Broad areas of application for dynamic surface water data include safety, climate, and wildlife, and more specifically ice jam and water quality monitoring, operational flood, wetland and floodplain mapping for flood hazard and risk assessment, and climate change studies.

Credit: Canada Centre for Remote Sensing (CCRS)/Canada Centre for Mapping and Earth Observation (CCMEO), Natural Resources Canada (NRCan)

Status: completed; complété RI_593

Maintenance and update frequency: asNeeded; auBesoin RI_540

Keywords ( RI_528 )

inundation frequency
remote sensing
Landsat
water
wetlands
water management
floods

Keywords ( RI_525 )

Canada
North America
Western Hemisphere
Northern Hemisphere

Government of Canada Core Subject Thesaurus Thésaurus des sujets de base du gouvernement du Canada ( RI_528 )

Water
Wetlands
Water management
Water conservation
Floods
Geographic data
Remote sensing

Use limitation: Open Government Licence - Canada (http://open.canada.ca/en/open-government-licence-canada)

Access constraints: license; licence RI_606

Use constraints: license; licence RI_606

Spatial representation type: grid; grille RI_636

Metadata language: eng; CAN

Topic category

Inland waters
Geoscientific information

Begin date: 1984-04

End date: 2023-10

Reference system identifier: http://www.epsg-registry.org / EPSG:3979 /

Distribution format

WMS ( Unknown )
TIFF ( Unknown )

RI_413

Government of Canada;Environment and Climate Change Canada;National Wildlife Research Centre - Ian Olthof ( Research Scientist )

OnLine resource: Yearly Water Mask 1984 ( HTTPS )
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OnLine resource: Dynamic Surface Water Maps 1984-2023 - Frequency Map ( OGC:WMS )
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OnLine resource: Yearly Water Mask 1985 ( HTTPS )
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OnLine resource: Yearly Water Mask 1986 ( HTTPS )
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OnLine resource: Yearly Water Mask 1987 ( HTTPS )
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OnLine resource: Yearly Water Mask 1988 ( HTTPS )
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OnLine resource: Yearly Water Mask 1989 ( HTTPS )
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OnLine resource: Yearly Water Mask 1990 ( HTTPS )
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OnLine resource: Yearly Water Mask 1991 ( HTTPS )
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OnLine resource: Yearly Water Mask 1992 ( HTTPS )
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OnLine resource: Yearly Water Mask 1993 ( HTTPS )
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OnLine resource: Yearly Water Mask 2004 ( HTTPS )
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OnLine resource: Yearly Water Mask 2005 ( HTTPS )
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OnLine resource: Yearly Water Mask 2006 ( HTTPS )
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OnLine resource: Yearly Water Mask 2007 ( HTTPS )
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OnLine resource: Yearly Water Mask 2008 ( HTTPS )
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OnLine resource: Yearly Water Mask 2009 ( HTTPS )
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OnLine resource: Yearly Water Mask 2010 ( HTTPS )
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OnLine resource: Yearly Water Mask 2011 ( HTTPS )
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OnLine resource: Yearly Water Mask 2012 ( HTTPS )
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OnLine resource: Yearly Water Mask 2013 ( HTTPS )
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OnLine resource: Yearly Water Mask 2014 ( HTTPS )
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OnLine resource: Yearly Water Mask 2015 ( HTTPS )
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OnLine resource: Yearly Water Mask 2016 ( HTTPS )
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OnLine resource: Yearly Water Mask 2017 ( HTTPS )
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OnLine resource: Yearly Water Mask 2018 ( HTTPS )
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OnLine resource: Yearly Water Mask 2019 ( HTTPS )
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OnLine resource: Dynamic Surface Water Maps 1984-2023 - Web Map Service ( HTTPS )
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OnLine resource: Yearly Water Mask 2020 ( HTTPS )
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OnLine resource: Yearly Water Mask 2021 ( HTTPS )
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OnLine resource: Inundation Frequency 1984-2023 ( HTTPS )
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OnLine resource: Inundation Trends 1984-2023 ( HTTPS )
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OnLine resource: Dynamic Surface Water Maps 1984-2023 - Frequency Map ( OGC:WMS )
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OnLine resource: Yearly Water Mask 2022 ( HTTPS )
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OnLine resource: Yearly Water Mask 2023 ( HTTPS )
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File identifier: 62de5952-a5eb-4859-b086-22a8ba8024b8 XML

Metadata language: eng; CAN

Character set: utf8; utf8 RI_458

Hierarchy level: dataset; jeuDonnées RI_622

Date stamp: 2024-05-21T15:59:14

Metadata standard name: North American Profile of ISO 19115:2003 - Geographic information - Metadata

Metadata standard version: CAN/CGSB-171.100-2009

RI_413

Government of Canada;Natural Resources Canada;Canada Centre for Mapping and Earth Observation - Thomas Rainville ( Geomatics Analyst )

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