Water Virtual Flow - Seamless Provincial Data Set

Coordinate system: 4269 - "NAD83"

Abstract:

The Water Virtual Flow data set is a fully connected, flow directed, stream network with complete topological flow structure. The data was originally based on the Natural Resources Values Information System (NRVIS) Water Body Segment layer and has been updated to create connectivity and flow direction. Streams may also have been edited using information from reliable local sources such as Conservation Authorities and MNR districts. The entire data set has been updated August 2005 incorporating edits received from partners of the Water Resources Information Program. The Water Virtual Flow is divided up into 5 coverages: UTM Zone 15, UTM Zone 16, UTM Zone 17 north, UTM Zone 17 south, and UTM Zone 18.

Please note that the Water Virtual Flow has been replaced by the OHN - Watercourse layer. However, this data class will continue to be available as it represents the state of our water flow as of December 2008.

Metadata Information

Language: eng; CAN

Last Update: 2014-07-21

Other Maintenance Requirements:
d6ab1ac5-02d1-4c58-b867-ba3ae11bccf1

Metadata Contact:
Scholars Portal, Ontario Council of University Libraries Toronto Ontario, Canada

Contact Instructions:
gis@scholarsportal.info

Metadata Standard:
North American Profile of ISO19115:2003 - Geographic Information
Citation Information

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.
Spatial Representation - Vector

Geometric Objects:

Object Type: composite

Object Count: 2062153
Reference System Information

Reference System Identifier

Value: 4269

Code Space: http://www.epsg-registry.org/
Data Quality Information

Scope Level: dataset

Additional Time Period Information: The seamless provincial Water Virtual Flow data layer was part of the original OBM and NRVIS database. It has had significant updates from 1998 to 2002 under the Water Resources Information Program (WRIP), again in August 2005, and again throughout 2008. This layer will soon be replaced by the OHN-Watercourse and Enhanced Watercourse layers, and therefore maintenance has been suspended and status considered 'Complete'. There will be no further maintenance on this data set.

Ontario Ministry of Natural Resources: Natural Resources Values Information System (NRVIS): A primary source for coincident base features (shorelines, streams, roads, cadastral, etc.) as loaded into the Natural Resources Values Information System at the Provincial Level. NRVIS is MNR's system for managing it's corporate geographic databases. - NRVIS standardizes the collection and maintenance of information (which allows for more reliable comparisons and analysis) - NRVIS has been designed so it can be extended in terms of new data (geographic unit) types and additional functionality - NRVIS has been designed to allow for continuous updating, rather than 'spring house cleaning.'
Distribution Information

Distributor:

Ontario Geospatial Data Exchange, Ontario Ministry of Natural Resources (OMNR) Peterborough Ontario, Canada

Water Virtual Flow - Seamless Provincial Data Set

Metadata Information

Citation Information

Spatial Representation - Vector

Reference System Information

Data Quality Information

Distribution Information