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Ontario Integrated Hydrology (OIH) data

Ontario Integrated Hydrology (OIH) data is used to generate watersheds and support provincial-scale hydrology applications including: * watershed generation * hydrologic modelling * watercourse network analysis Four key datasets are represented in each data package: * stream network (Enhanced Watercourse) * hydrology-enforced digital elevation model [DEM ] (Enforced DEM) * flow direction grid (Enhanced Flow Direction - EFDIR) * raster representation of the stream network (StreamGrid) __Technical information__ For the first time, OIH data is complete for the entire province making it possible to create a watershed for any location in Ontario. This includes areas flowing in from neighbouring provinces and Minnesota with the following exceptions: * points on the international border that drain to Lake Superior, south of Pigeon River * points on the international border that drain the Great Lakes connecting channels and St. Lawrence River stateside * points along the Ottawa River that drain from Quebec __Special note: North West package__ The North West package contains hydrography data for the entire Rainy River Basin, an area which straddles the international border between Canada and the United States. The data stateside originates from the National Hydrography Dataset (NHD) as of February/March 2014. This data has been harmonized with the Ontario Hydro Network (OHN) to create the Enhanced Watercourse and Integrated Waterbody layers found within the North West package. For more information on when the data was initially extracted and incorporated, refer to these fields stored in the attribute table of each vector layer in the geodatabase: * Effective Date (EFF_DATE) * Geometry Update Date (GEO_UPD_DT) The data stateside is a static snapshot of NHD intended to support regional modeling. Please refer to the [United States Geological Survey (USGS)](https://www.usgs.gov/core-science-systems/ngp/national-hydrography) website for the most current version of NHD. Data is updated after the completion of major updates to source data (such as OHN and/or the Provincial DEM).

Simple

Date ( RI_367 )
2020-01-11
Date ( RI_366 )
2020-01-11
RI_414
  Government of Ontario; Government of Ontario; Natural Resources and Forestry - ( )
Status
onGoing; enContinue RI_596
Maintenance and update frequency
asNeeded; auBesoin RI_540
Keywords ( RI_528 )
  • Economy and Business
  • Environment and Natural Resources
  • Environment and energy
  • watersheds
  • hydrologic modelling
  • Arc Hydro quaternary watersheds
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
  • HTML ( unknown )

  • PDF ( unknown )

RI_414
  Government of Ontario; Government of Ontario; Natural Resources and Forestry - ( )
OnLine resource
Ontario Integrated Hydrology (OIH) Data ( HTTPS )

Dataset;HTML;eng

OnLine resource
Données hydrologiques intégrées de l’Ontario ( HTTPS )

Dataset;HTML;eng

OnLine resource
Ontario Integrated Hydrology - Data Packages Extent And History ( HTTPS )

Supporting Document;PDF;eng

OnLine resource
Ontario Integrated Hydrology - User Guide ( HTTPS )

Supporting Document;PDF;eng

OnLine resource
Arc hydro quaternary watershed sessions ( HTTPS )

Supporting Document;PDF;eng

File identifier
ef0c4387-38ce-4adc-b761-f0506b82564e XML
Metadata language
eng; CAN
Character set
utf8; utf8 RI_458
Hierarchy level
dataset; jeuDonnées RI_622
Date stamp
2025-04-08
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 - ( )
 
 

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