Ontario Ministry of Natural Resources Peterborough Ontario,
Canada
Themes or Categories of the Resource: inlandWaters
Keywords:
WATER, WATER MANAGEMENT, STREAM FLOW, STREAMS, WATER FLOW, RIVERS
WATER, WATER MANAGEMENT, STREAM FLOW, WATER FLOW, STREAMS, RIVERS
Water, Eau, Water management, Gestion de l'eau, Rivers, Cours d'eau
Place Keywords:
Continent > North America > Canada > Ontario
Purpose:
The Water Virtual Flow Data Set can be used in stream network analysis for hydrologic applications such as helping create watersheds, computing stream orders to easily query headwaters and major streams, and tracing up and down streams through network utilities in GIS software to quickly find contributing streams to a point of the fate of water from a stream as it moves downstream. It is also used to provide drainage enforcement when creating digital elevation models.
Dataset Language:
eng; CAN
Status: completed
Update Frequency: asNeeded
Spatial Representation Type: vector
Processing Environment:
Spatial locations and attributes are maintained by the OMNR's Natural Resources and Values Information System (NRVIS). All network analysis and processing is performed in ArcInfo with the Network module. The data can be converted to other software formats for network analysis.; ArcInfo coverage format.
Extent
West Longitude: -95.155902
East Longitude: -74.307213
North Latitude: 51.623916
South Latitude: 41.733337
Supplemental Information:
The majority of the information in this product has been integrated and served as input to several of Ontario Ministry of Natural Resources' related hydrology data sets (Version 2 DEM, Enhanced Flow Direction product, Provincial Watersheds and Arc Hydro Quaternary Session Data). Both data sets (Water Virtual Flow and OHN-Watercourse) will be undergoing a period of review to evaluate the work conducted during the HDS-Watercourse Consolidation performed by BDI in 2009-10. As part of this project, significant changes to the geometry occurred primarily dealing with the removal of headwater segments not verified by MNR (this unverified information was gathered from Conservation Authorities during a period between 1998-2006 prior to any establishment of standards for data capture). The Water Virtual Flow is still considered valuable because it includes stream-ordering which is useful for regional analysis and cartographic applications. For these reasons, this data class will continue to be made available until all the stated issues are properly addressed. Measure Description: Horizontal: Precise: +/- 10 m; Vertical: Not Applicable.