Historic bathymetry maps

Bathymetry is the measurement of water depth in lakes. From the 1940s to the 1990s, the Ministry of Natural Resources and Forestry produced bathymetry maps for over 11,000 lakes across Ontario. The data can be used by the general public and GIS specialists for: * climate change modelling * fish monitoring and other ecological applications * hydrologic cycle modelling * recreational fishing maps * watershed-based water budgeting The maps were created using simple methods to determine lake depths. They were meant for resource management purposes only. Little effort was made to identify shoals and other hazards when creating these bathymetric maps. Since this data was collected, many constructed and naturally occurring events could mean that the depth information is now inaccurate, so these maps should not be used for navigational purposes. In many cases, these maps still represent the only authoritative source of bathymetry data for lakes in Ontario. __Technical information__ These maps are being converted to digital GIS line data which can be found in the [Bathymetry Line](https://geohub.lio.gov.on.ca/datasets/mnrf::bathymetry-line) data class. The [Bathymetry Index](https://geohub.lio.gov.on.ca/datasets/mnrf::bathymetry-index) data class identifies if GIS vector lines have been created and the location of mapped lakes. The historic paper maps have been scanned into digital files. We will add new digital files to this dataset if they become available. The digital files have been grouped and packaged by regions into 13 compressed (zipped) files for download. Note: package 99 contains scanned maps where the location shown on the map could not be determined.

Simple

Date ( RI_367 )
2020-10-20
Date ( RI_366 )
2020-10-20
RI_414
  Government of Ontario; Government of Ontario; Natural Resources and Forestry - ( )
Status
onGoing; enContinue RI_596
Maintenance and update frequency
unknown; inconnu RI_543
Keywords ( RI_528 )
  • Environment and Natural Resources
Government of Canada Core Subject Thesaurus Thésaurus des sujets de base du gouvernement du Canada ( RI_528 )
  • Government information
Use limitation
Open Government Licence – Ontario (https://www.ontario.ca/page/open-government-licence-ontario)
Access constraints
license; licence RI_606
Use constraints
license; licence RI_606
Spatial representation type
vector; vecteur RI_635
Metadata language
eng; CAN
Metadata language
fra; CAN
Topic category
  • Economy
Begin date
0001-01-01
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W
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Reference system identifier
unknown / unknown / unknown
Distribution format
  • ESRI REST ( unknown )

  • HTML ( unknown )

  • PDF ( unknown )

  • XLS ( unknown )

  • ZIP ( unknown )

RI_414
  Government of Ontario; Government of Ontario; Natural Resources and Forestry - ( )
OnLine resource
Historic Bathymetry Maps (extracted from geohub) ( ESRI REST: Feature Service )

Web Service;ESRI REST;eng

OnLine resource
Historic Bathymetry Maps (extracted from geohub) ( ESRI REST: Feature Service )

Web Service;ESRI REST;eng

OnLine resource
Historic Bathymetry Maps ( HTTPS )

Dataset;HTML;eng

OnLine resource
Cartes bathymétriques historiques ( HTTPS )

Dataset;HTML;eng

OnLine resource
Bathymetry Package Map (extracted from geohub) ( HTTPS )

Supporting Document;PDF;eng

OnLine resource
Bathymetry Lookup Values (extracted from geohub) ( HTTPS )

Dataset;XLS;eng

OnLine resource
Historic Bathymetry Maps - Package 1 (extracted from geohub) ( HTTPS )

Dataset;ZIP;eng

OnLine resource
Historic Bathymetry Maps - Package 2 (extracted from geohub) ( HTTPS )

Dataset;ZIP;eng

OnLine resource
Historic Bathymetry Maps - Package 3 (extracted from geohub) ( HTTPS )

Dataset;ZIP;eng

OnLine resource
Historic Bathymetry Maps - Package 4 (extracted from geohub) ( HTTPS )

Dataset;ZIP;eng

OnLine resource
Historic Bathymetry Maps - Package 5 (extracted from geohub) ( HTTPS )

Dataset;ZIP;eng

OnLine resource
Historic Bathymetry Maps - Package 6 (extracted from geohub) ( HTTPS )

Dataset;ZIP;eng

OnLine resource
Historic Bathymetry Maps - Package 7 (extracted from geohub) ( HTTPS )

Dataset;ZIP;eng

OnLine resource
Historic Bathymetry Maps - Package 8 (extracted from geohub) ( HTTPS )

Dataset;ZIP;eng

OnLine resource
Historic Bathymetry Maps - Package 9 (extracted from geohub) ( HTTPS )

Dataset;ZIP;eng

OnLine resource
Historic Bathymetry Maps - Package 10 (extracted from geohub) ( HTTPS )

Dataset;ZIP;eng

OnLine resource
Historic Bathymetry Maps - Package 11 (extracted from geohub) ( HTTPS )

Dataset;ZIP;eng

OnLine resource
Historic Bathymetry Maps - Package 12 (extracted from geohub) ( HTTPS )

Dataset;ZIP;eng

OnLine resource
Historic Bathymetry Maps - Package 13 (extracted from geohub) ( HTTPS )

Dataset;ZIP;eng

OnLine resource
Historic Bathymetry Maps - Package 99 (extracted from geohub) ( HTTPS )

Dataset;ZIP;eng

File identifier
3a277f42-00f4-4b39-8343-364108825661 XML
Metadata language
eng; CAN
Character set
utf8; utf8 RI_458
Hierarchy level
dataset; jeuDonnées RI_622
Date stamp
2025-05-13
Metadata standard name
North American Profile of ISO 19115:2003 - Geographic information - Metadata
Metadata standard version
HNAP ISO:19115 - 2003
RI_414
  Government of Ontario; Government of Ontario; Natural Resources and Forestry - ( )
 
 

Overviews

overview

Spatial extent

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Keywords


Provided by

Associated resources

Not available