Lotic Riparian - Digital Elevation Model (DEM) Derived


Identification Information:
Citation:
Citation Information:
Originator: Alberta Environment and Parks, Government of Alberta
Publication Date: 20111031
Title: Lotic Riparian - Digital Elevation Model (DEM) Derived
Geospatial Data Presentation Form: vector digital data
Publication Information:
Publication Place: Edmonton, Alberta
Publisher: Alberta Environment and Parks, Government of Alberta
Online Linkage: https://extranet.gov.ab.ca/srd/geodiscover/srd_pub/biota/Riparian/LoticRiparianDigitalElevationModelDerived.zip
Description:
Abstract: This dataset is produced for the Government of Alberta and is available to the general public. Please consult the Distribution Information of this metadata for the appropriate contact to acquire this dataset. Riparian areas consist of the lands adjacent to streams, rivers, wetlands and lakes that are strongly influenced by the presence of water. They are often distinct from the surrounding landscape as the vegetation growth is very lush. These areas form a transition between dry land and open water and are characterized by the presence of hydrophilic vegetation and specific soil types. Riparian areas are usually very productive in terms of biomass and form critical wildlife habitat. These areas often have standing water and are subjected to periodic flooding when high water levels fill the stream channel to the top of the bank. The term "riparian" is derived from the Latin word for river bank. Riparian areas provide valuable food, shelter and travel corridors as well as close proximity to a water source for wildlife and livestock. These zones are often densely vegetated and serve as stabilization against the erosive forces associated with lotic systems. Riparian areas provide filtration for surface runoff from the surrounding land and protect the water quality of flowing streams. They trap sediment and reduce the velocity of stream flow, thus reducing erosion in downstream areas. These areas provide detritus to their associated aquatic systems as well as a moderating effect on surface temperatures. This riparian mapping project is intended to provide a geodatabase feature class of potential riparian areas associated with lotic features (streams and rivers) using the hydrologically corrected provincial digital elevation model as a base. Potential riparian areas associated with lentic features (wetlands and lakes) are not being captured at this time but wide rivers and lakes with flow through must be taken into consideration in order to give a more accurate representation of riparian areas. Isolated lakes are not included and no allowance for cultivated lands has been made.
Purpose: This riparian mapping project is considered to be an overview for the province and is intended to provide a spatial representation of potential riparian areas associated with lotic features (streams and rivers). Where a stream or river passes through a perennial lake, the shoreline of the lake is captured in order to give a more accurate representation of riparian areas. Wetlands and non-perennial lakes as well as source, sink and isolated lakes, are not included. These areas are deemed to be potential riparian areas as no allowance for disturbance has been made. The purpose of this project is to provide a 1:20 000 scale GIS-ready map of potential lotic riparian areas for the entire province in geodatabase format. This riparian feature class consists of polygons representing the location of lotic riparian areas that have been generated from slopes derived from the Base Features Derived Partially Filled Hydrologically Corrected Digital Elevation Model grid using satellite imagery to determine thresholds for the floodplains. This project was not intended as an air photo interpretation or image classification exercise. This feature class was created for the purpose of providing a reasonable estimate of riparian areas by Land-use Framework Planning Region (merged into a provincial dataset) and is not intended for use in site-specific management and/or planning within individual land parcels, small watersheds, local government units, or small study areas. For any use of this data outside of the project purpose, it is highly recommended that the data be supplemented with air photo/satellite image analysis and/or detailed field site study.
Supplemental Information: This dataset replaces the Lotic Riparian - Strahler Order Derived dataset as a more spatially accurate representation of riparian areas.
Language of Dataset: en
Time Period of Content:
Time Period Information:
Range of Dates/Times:
Beginning Date: 1981
Ending Date: 1995
Currentness Reference: ground condition
Status:
Progress: Complete
Maintenance and Update Frequency: None planned
Spatial Domain:
Bounding Coordinates:
West Bounding Coordinate: -120.001383
East Bounding Coordinate: -110.004764
North Bounding Coordinate: 60.000457
South Bounding Coordinate: 48.996680
Local Bounding Coordinates:
Left Bounding Coordinate: -120.001383
Right Bounding Coordinate: -110.004764
Bottom Bounding Coordinate: 48.996680
Top Bounding Coordinate: 60.000457
Keywords:
Theme:
Theme Keyword Thesaurus: ISO 19115 Topic Category
Theme Keyword: biota
Theme Keyword: inlandWaters
Theme:
Theme Keyword Thesaurus: none
Theme Keyword: aquatic
Theme Keyword: drainage
Theme Keyword: riparian
Theme Keyword: shoreline
Theme Keyword: stream
Theme Keyword: wetland
Theme Keyword: river
Theme Keyword: habitat
Theme Keyword: flood
Theme Keyword: ecology
Theme:
Theme Keyword Thesaurus: Land-use Framework
Theme Keyword: Lower Athabasca Integrated Planning Region
Theme Keyword: Upper Athabasca Integrated Planning Region
Theme Keyword: Lower Peace Integrated Planning Region
Theme Keyword: Upper Peace Integrated Planning Region
Theme Keyword: North Saskatchewan Integrated Planning Region
Theme Keyword: Red Deer Integrated Planning Region
Theme Keyword: South Saskatchewan Integrated Planning Region
Theme Keyword: LAIPR
Theme Keyword: UAIPR
Theme Keyword: LPIPR
Theme Keyword: UPIPR
Theme Keyword: NSIPR
Theme Keyword: RDIPR
Theme Keyword: SSIPR
Place:
Place Keyword Thesaurus: Alberta Geographic Names (GNS)
Place Keyword: Alberta
Stratum:
Stratum Keyword Thesaurus: Map Scale
Stratum Keyword: 1:20 000
Temporal:
Temporal Keyword Thesaurus: Year of Publication
Temporal Keyword: 2011
Access Constraints: To access the data you must agree to the terms of the Open Government Licence - Alberta.
Use Constraints: Your use of the information will be governed by the terms of the Open Government Licence - Alberta in force as of the date you accessed the information.
Point of Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: Alberta Environment and Parks, Government of Alberta
Contact Position: Information and Data Provisioning Services, Informatics Branch, Corporate Services Division
Contact Address:
Address Type: mailing and physical address
Address: 14th Floor, Oxbridge Place
Address: 9820 - 106 Street NW
City: Edmonton
State or Province: Alberta
Postal Code: T5K 2J6
Country: Canada
Contact Voice Telephone: 7804225117
Contact Facsimile Telephone: 7804220712
Contact Electronic Mail Address: AEP.GDAMetadata@gov.ab.ca
Hours: 08:15 to 16:30 Monday to Friday
Contact Instructions: This is the point of contact regarding the creation of, and characteristics of, the data set. Queries about the creation and/or characteristics of the data set submitted through facsimile or electronic mail must include the salutation "Attention: Information and Data Provisioning Services, Informatics Branch, Corporate Services Division; Dataset: Lotic Riparian - Digital Elevation Model (DEM) Derived". For Distribution Information contact instructions, refer to the Distribution Information section of this metadata record. For Metadata Information contact instructions, refer to the Metadata Reference Information section of this metadata record.
Data Set Credit: This dataset was developed by Caslys Consulting Ltd. under contract to Alberta Environment and Parks, Government of Alberta. Merging, cleanup and an accuracy assessment were performed by Information and Data Provisioning Services.
Security Information:
Security Classification System: Government of Alberta Data and Information Security Classification
Security Classification: Public
Native Data Set Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.3500
Cross Reference:
Citation Information:
Originator: Caslys Consulting Ltd.
Publication Date: 200911
Title: Riparian Inventory - Lotic Systems Upper Athabasca Region
Publication Information:
Publication Place: Edmonton, Alberta
Publisher: Alberta Environment and Parks, Government of Alberta
Cross Reference:
Citation Information:
Originator: Caslys Consulting Ltd.
Publication Date: 201002
Title: Riparian Inventory - Lotic Systems Upper Peace Region
Publication Information:
Publication Place: Edmonton, Alberta
Publisher: Alberta Environment and Parks, Government of Alberta
Cross Reference:
Citation Information:
Originator: Caslys Consulting Ltd.
Publication Date: 201003
Title: Riparian Inventory - Lotic Systems Lower Peace Region
Publication Information:
Publication Place: Edmonton, Alberta
Publisher: Alberta Environment and Parks, Government of Alberta
Cross Reference:
Citation Information:
Originator: Caslys Consulting Ltd.
Publication Date: 201008
Title: Riparian Inventory - Lotic Systems Red Deer Planning Region
Publication Information:
Publication Place: Edmonton, Alberta
Publisher: Alberta Environment and Parks, Government of Alberta
Cross Reference:
Citation Information:
Originator: Caslys Consulting Ltd.
Publication Date: 201010
Title: Riparian Inventory - Lotic Systems North Saskatchewan Planning Region
Publication Information:
Publication Place: Edmonton, Alberta
Publisher: Alberta Environment and Parks, Government of Alberta
Cross Reference:
Citation Information:
Publication Date: 201012
Title: Riparian Inventory - Lotic Systems Lower Athabasca Planning Region
Publication Information:
Publication Place: Edmonton, Alberta
Publisher: Alberta Environment and Parks, Government of Alberta
Cross Reference:
Citation Information:
Publication Date: 201103
Title: Riparian Inventory - Lotic Systems South Saskatchewan Planning Region
Publication Information:
Publication Place: Edmonton, Alberta
Publisher: Alberta Environment and Parks, Government of Alberta
Native Dataset Format: SDE Feature Class
Data Quality Information:
Attribute Value Accuracy Information:
Attribute Accuracy Report: An accuracy assessment has been completed and full results can been viewed in the document titled "Accuracy Assessment Results for the Government of Alberta's Digital Elevation Model (DEM) - Derived Lotic Riparian Dataset" (see online linkage found in this metadata). An accuracy assessment was undertaken and completed with the goal of providing data user's a greater understanding of the successes and limitations associated with the spatial mapping of lotic riparian areas across the province of Alberta. Three components of accuracy were assessed as a part of this project, including point, area and linear width accuracy and reported as a function of the overall accuracy assessment as well as by Natural Region (NR). The accuracy assessment is based on the calculation of a number of statistics, including overall accuracy, kappa, riparian user's accuracy, riparian producer's accuracy, non-riparian user's accuracy, non-riparian producer's accuracy, Mapcurves Goodness-of-Fit values, and average difference in linear width. The reference data used in this project was photo-interpreted from 3-D, colour-infrared, high resolution aerial photography. Overall values for accuracy for the point assessment were determined to be: 78.2% for the overall point assessment; 78.3% for the Boreal Natural Region (NR); 75.0% for the Canadian Shield NR; 82.7% for the Foothills NR; 76.9% for the Grassland NR; 67.8% for the Parkland NR; and 96.6% for the Rocky Mountain NR. For the area assessment overall accuracies were found to be: 80.5% for the total dataset tested; 79.1% for the Boreal NR; 89.0% for the Canadian Shield NR; 87.4% for the Foothills NR; 83.4% for the Grassland NR; 71.4% for the Parkland NR; and 89.4% for the Rocky Mountain NR. These values all exceeded the 65% accuracy threshold set out in the contract specifications for the development of the dataset. In terms of the linear width assessment the riparian dataset was found to be wider than was determined by the photo-interpreted riparian by an average of: 49.3m in the Boreal NR; 52.7m in the Foothills NR; 187.2m in the Grassland NR; 194.6m in the Parkland NR; and 33.6m in the Rocky Mountains NR. Please see the report for a breakdown of all the statistics that composed this accuracy assessment as they cannot all be fully discussed in this section of the metadata. Overall, the Parkland was found to be the least accurate NR, in comparison to the others, while the Rocky Mountain NR was found to be the most accurate. Although various factors contribute to a reduction in accuracy in any modelled dataset, the abundant anthropogenic disturbance and human urbanization in the Parkland NR are considered the major factors in the discrepancies between the riparian dataset and the photo-interpreted riparian reference data. As the specifications for the development of this dataset did not take into account anthropogenic disturbance factors, areas with high levels of cultivation, urbanization and other anthropogenic influence tend to be over-represented in the riparian dataset relative to what is left for riparian corridors after such development/human influence. Similarly, the Grassland NR was found to have lower accuracy values than some of the other NR's due to high levels of cultivation which have reduced the amount of naturally functioning riparian ecosystems left on the landscape. Conversely, the Foothills, Boreal and Rocky Mountain NR's were found to have high accuracy results. Very good results were likely obtained in these Natural Regions for a number of reasons but a couple of note include less anthropogenic disturbance in the form of urbanization and cultivation and greater topographic changes throughout the NR. While differences were seen between the Natural Regions the overall results of the accuracy assessment exceeded the 65% accuracy threshold set out in the project specifications and reasonable accuracy results were obtained.
Logical Consistency Report: The hydrologically corrected digital elevation model grid has been processed for all of the streams (for which there is spatial information) across the province of Alberta. The topology has been checked for overlapping polygons but has not been checked for intersection with the base stream network or the waterbodies. Islands within large rivers have not been included as part of the riparian layer. Multipart polygons have been exploded to single part. The geometry has been checked and repaired where necessary.
Completeness Report: Riparian areas associated with lotic features have been captured for the entire province of Alberta. Lentic and wetland features have not been captured at this time, unless directly connected to a stream with flow through as per the goals of the dataset.
Positional Accuracy:
Horizontal Positional Accuracy:
Horizontal Positional Accuracy Report: An accuracy assessment has been completed for the riparian dataset and complete results can be viewed in the document "Accuracy Assessment for the Government of Alberta's Lotic Riparian - Digital Elevation Model (DEM) Derived Dataset". Reasonable accuracy results were obtained for the overall assessment as well as when broken down by Natural Region.
Vertical Positional Accuracy:
Vertical Positional Accuracy Report: Not applicable
Lineage:
Source Information:
Source Citation:
Citation Information:
Originator: Alberta Environment and Parks, Government of Alberta
Publication Date: 2007
Title: Base Features Derived Simplified Linear Network
Geospatial Data Presentation Form: vector digital data
Publication Information:
Publication Place: Edmonton, Alberta
Publisher: Alberta Environment and Parks, Government of Alberta
Source Scale Denominator: 20000
Type of Source Media: disc
Source Time Period of Content:
Time Period Information:
Range of Dates/Times:
Beginning Date: 1981
Ending Date: 1996
Source Currentness Reference: ground condition
Source Citation Abbreviation: BFD SLN
Source Contribution: 1:20 000 scale digital source of arcs representing the simplified stream network used as a base for determining flow path
Source Information:
Source Citation:
Citation Information:
Originator: Alberta Environment and Parks, Government of Alberta
Publication Date: 2009
Title: Base Features Derived Simplified Hydropolygons
Geospatial Data Presentation Form: vector digital data
Publication Information:
Publication Place: Edmonton, Alberta
Publisher: Alberta Environment and Parks, Government of Alberta
Source Scale Denominator: 20000
Type of Source Media: disc
Source Time Period of Content:
Time Period Information:
Range of Dates/Times:
Beginning Date: 1955
Ending Date: 1996
Source Currentness Reference: ground condition
Source Citation Abbreviation: BFD SHP
Source Contribution: 1:20 000 scale digital source of polygons representing the perennial waterbodies.
Source Information:
Source Citation:
Citation Information:
Originator: Alberta Environment and Parks, Government of Alberta
Publication Date: 2009
Title: Base Features Derived Partially Filled Hydrologically Corrected Digital Elevation Model
Geospatial Data Presentation Form: raster digital data
Publication Information:
Publication Place: Edmonton, Alberta
Publisher: Alberta Environment and Parks, Government of Alberta
Source Scale Denominator: 20000
Type of Source Media: disc
Source Time Period of Content:
Time Period Information:
Range of Dates/Times:
Beginning Date: 1981
Ending Date: 1994
Source Currentness Reference: ground condition
Source Citation Abbreviation: BFD PF HCDEM
Source Contribution: 1:20 000 scale digital source of partially filled hydrologically corrected digital elevation data used to generate slope classes
Source Information:
Source Citation:
Citation Information:
Originator: various
Publication Date: various
Title: Landsat, EOSD, SPOT, Air photos
Geospatial Data Presentation Form: remote-sensing image
Publication Information:
Publication Place: various
Publisher: various
Source Scale Denominator: various
Type of Source Media: disc
Source Time Period of Content:
Time Period Information:
Range of Dates/Times:
Beginning Date: 1999
Ending Date: 2009
Source Currentness Reference: ground condition
Source Citation Abbreviation: IMAGE
Source Contribution: Landsat, EOSD, SPOT and air photo imagery that were used in the establishment of thresholds
Source Information:
Source Citation:
Citation Information:
Originator: Alberta Environment and Parks, Government of Alberta
Publication Date: various
Title: Ancillary Data
Geospatial Data Presentation Form: raster digital data
Publication Information:
Publication Place: Edmonton, Alberta
Publisher: Alberta Environment and Parks, Government of Alberta
Other Citation Details: includes additional ecological information
Source Scale Denominator: various
Type of Source Media: disc
Source Time Period of Content:
Time Period Information:
Range of Dates/Times:
Beginning Date: 1977
Ending Date: 2005
Source Currentness Reference: publication date
Source Citation Abbreviation: ANC
Source Contribution: Additional data, such as ecological, integrated resource inventory and biophysical georeferenced rectified .tif images that were used to establish thresholds and check results
Source Information:
Source Citation:
Citation Information:
Originator: Alberta Environment and Parks, Government of Alberta
Publication Date: 2005
Title: Natural Regions and Subregions of Alberta (2005)
Geospatial Data Presentation Form: vector digital data
Publication Information:
Publication Place: Edmonton, Alberta
Publisher: Alberta Environment and Parks, Government of Alberta
Source Scale Denominator: 1000000
Type of Source Media: disc
Source Time Period of Content:
Time Period Information:
Single Date/Time:
Calendar Date: 2005
Source Currentness Reference: ground condition
Source Citation Abbreviation: NATREG
Source Contribution: Natural Regions and Subregions of Alberta 2005 were used to stratify the data for establishing thresholds.
Source Information:
Source Citation:
Citation Information:
Originator: Alberta Environment and Parks, Government of Alberta
Publication Date: 2007
Title: Base Features Derived Strahler Order Coded Simplified Linear Network
Geospatial Data Presentation Form: tabular digital data
Publication Information:
Publication Place: Edmonton, Alberta
Publisher: Alberta Environment and Parks, Government of Alberta
Source Scale Denominator: 20000
Source Time Period of Content:
Time Period Information:
Range of Dates/Times:
Beginning Date: 1981
Ending Date: 1996
Source Currentness Reference: ground condition
Source Citation Abbreviation: BFD SSLN
Source Contribution: Strahler Order coded simplified streams were used to gauge the impact of flow accumulation on riparian habitat.
Source Information:
Source Citation:
Citation Information:
Originator: Alberta Environment and Parks
Publication Date: various
Title: Alberta Vegetation Inventory
Geospatial Data Presentation Form: vector digital data
Publication Information:
Publication Place: Edmonton, Alberta
Publisher: Alberta Environment and Parks, Government of Alberta
Source Scale Denominator: 15000
Type of Source Media: disc
Source Time Period of Content:
Time Period Information:
Range of Dates/Times:
Beginning Date: 1987
Ending Date: present
Source Currentness Reference: ground condition
Source Citation Abbreviation: AVI
Source Contribution: Alberta Vegetation Inventory data were used to stratify data to establish thresholds.
Source Information:
Source Citation:
Citation Information:
Originator: Alberta Environment and Parks, Government of Alberta
Publication Date: 2000
Title: Base Features Contour Arcs
Geospatial Data Presentation Form: vector digital data
Publication Information:
Publication Place: Edmonton, Alberta
Publisher: Alberta Environment and Parks, Government of Alberta
Source Scale Denominator: 20000
Type of Source Media: disc
Source Time Period of Content:
Time Period Information:
Range of Dates/Times:
Beginning Date: 1981
Ending Date: 1994
Source Currentness Reference: ground condition
Source Citation Abbreviation: BF CONTOURS
Source Contribution: Used with hillshade to verify results and for cartographic purposes.
Source Information:
Source Citation:
Citation Information:
Originator: Alberta Environment and Parks, Government of Alberta
Publication Date: 2011
Title: Base Features Geoadministrative Land Use Framework Planning Regions
Geospatial Data Presentation Form: vector digital data
Publication Information:
Publication Place: Edmonton, Alberta
Publisher: Alberta Environment and Parks, Government of Alberta
Source Scale Denominator: 20000
Type of Source Media: disc
Source Time Period of Content:
Time Period Information:
Single Date/Time:
Calendar Date: 2008
Source Currentness Reference: ground condition
Source Citation Abbreviation: LUF
Source Contribution: The Land-use Framework boundaries were used to delineate the areas for processing
Source Information:
Source Citation:
Citation Information:
Originator: Alberta Environment, Government of Alberta
Publication Date: 2006
Title: Drainage Basins of Alberta (2006)
Geospatial Data Presentation Form: vector digital data
Publication Information:
Publication Place: Edmonton, Alberta
Publisher: Alberta Environment and Parks, Government of Alberta
Source Scale Denominator: 1000000
Type of Source Media: disc
Source Time Period of Content:
Time Period Information:
Single Date/Time:
Calendar Date: 2006
Source Currentness Reference: publication date
Source Citation Abbreviation: DBA
Source Contribution: The Drainage Basins of Alberta (2006) were used to delineate boundaries for the study areas.
Process Step:
Process Description: Model input layers. Shorelines for lakes with flow through and the linear stream network are captured. The partially filled hydrologically corrected digital elevation model is used to generate a hillshade, an elevation classification and a slope classification. The hillshade, contours and the elevation classification are used to verify the results. The slope classification is used in the development of a cost surface model. The prototype areas were selected based on Natural Subregions.
Source Used Citation Abbreviation: BFD SLN
Source Used Citation Abbreviation: BFD SHP
Source Used Citation Abbreviation: BFD PF HCDEM
Source Used Citation Abbreviation: NATREG
Source Used Citation Abbreviation: CONTOURS
Source Produced Citation Abbreviation: SLOPE CLASS
Process Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: Caslys Consulting Ltd.
Process Step:
Process Description: Model development. Develop a slope / elevation cost surface where the value for each cell in the surface is based on the least accumulated cost of travelling across the surface. Establish the cost surface distance thresholds using imagery to determine if stream order, Natural Subregions and the type of stream are factors. Preliminary model results were overlaid with vegetation data to review the accuracy.
Source Used Citation Abbreviation: SLOPE CLASS
Source Used Citation Abbreviation: IMAGE
Source Used Citation Abbreviation: ANC
Source Used Citation Abbreviation: AVI
Source Used Citation Abbreviation: BFD SSLN
Source Produced Citation Abbreviation: MODEL
Process Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: Caslys Consulting Ltd.
Process Step:
Process Description: Generate preliminary models and then process and assess prototype areas using the slope / elevation cost distance thresholds. Sample points are generated and overlaid with imagery and ancillary data within the prototype areas. The sample points were assessed and the cost classes for the valid riparian points established. The mean cost distance value and standard deviation were determined for each prototype area for the BFD SLN. The final cost distance threshold is established using the mean value plus one standard deviation. The model results for the prototypes were verified using imagery and ancillary data. Stream orders greater than 6 were inspected for validity.
Source Used Citation Abbreviation: ANC
Source Used Citation Abbreviation: MODEL
Source Used Citation Abbreviation: AVI
Source Used Citation Abbreviation: NATREG
Source Used Citation Abbreviation: IMAGE
Source Used Citation Abbreviation: BFD SSLN
Source Produced Citation Abbreviation: PROTOTYPES
Process Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: Caslys Consulting Ltd.
Process Step:
Process Description: Apply process to entire area using slope / elevation cost distance thresholds. The Red Deer River sub basin was the pilot area. The rest of the Red Deer region and the Lower Peace, Upper Peace, Upper Athabasca, Lower Athabasca, South Saskatchewan and North Saskatchewan regions were processed later as individual blocks of data.
Source Used Citation Abbreviation: DBA
Source Used Citation Abbreviation: LUF
Source Used Citation Abbreviation: MODEL
Source Used Citation Abbreviation: PROTOTYPES
Source Produced Citation Abbreviation: LOTIC RIPARIAN REGIONS
Process Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: Caslys Consulting Ltd.
Process Step:
Process Description: The individual areas for the Land-use Framework planning regions were initially processed separately. Multipart features were exploded into singlepart features and the blocks of data were merged and edge-tied to create the final feature class. The polygons in the merged dataset were split by Natural Subregion as the polygons were too large to process. The Natural Region and Subregion names have been captured as attributes. Fields for area (square kilometres) and perimeter (kilometres) were added and calculated in Ten Degrees Transverse Mercator projection North American Datum 1983. All polygons smaller than 5 square metres in area were removed and polygons less than 25 square metres in area that were not the result of a split on a Natural Subregion boundary were also removed from the dataset. The geometry was repaired and the dataset was re-checked for multipart polygons. Topology was created to check for overlapping polygons and validated. The dataset was compacted.
Source Used Citation Abbreviation: LOTIC RIPARIAN REGIONS
Source Produced Citation Abbreviation: LOTIC RIPARIAN MERGED
Process Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: Alberta Environment and Parks, Government of Alberta
Contact Position: Information and Data Provisioning Services, Informatics Branch, Corporate Services Division
Contact Voice Telephone: 7804225117
Hours: 08:15 to 16:30 Monday to Friday
Process Step:
Process Description: The data are loaded into the SDE repository in ten degrees transverse mercator projection with a 500 000 metre false easting and then loaded into the SDE warehouse in geographic as a one-way replica.
Source Used Citation Abbreviation: LOTIC RIPARIAN MERGED
Source Produced Citation Abbreviation: LOTIC RIPARIAN MERGED
Process Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: Alberta Environment and Parks, Government of Alberta
Contact Position: Information and Data Provisioning Services, Informatics Branch, Corporate Services Division
Contact Voice Telephone: 7804225117
Hours: 08:15 to 16:30 Monday to Friday
Spatial Reference Information:
Horizontal Coordinate System Definition:
Planar:
Map Projection:
Transverse Mercator:
Scale Factor at Central Meridian: 0.9992
Longitude of Central Meridian: -115.0
Latitude of Projection Origin: 0.0
False Easting: 500000.0
False Northing: 0.0
Map Projection Name: Transverse Mercator
Planar Coordinate Information:
Planar Coordinate Encoding Method: coordinate pair
Coordinate Representation:
Abscissa Resolution: 0.0001
Ordinate Resolution: 0.0001
Planar Distance Units: meters
Geodetic Model:
Horizontal Datum Name: D North American 1983
Ellipsoid Name: GRS 1980
Semi-major Axis: 6378137.0
Denominator of Flattening Ratio: 298.257222101
Entity and Attribute Information:
Detailed Description:
Entity Type:
Entity Type Label: LoticRiparian_DEMDerived
Entity Type Definition: Lotic Riparian - Digital Elevation Model (DEM) Derived
Entity Type Definition Source: Informatics Branch 2011
Entity Type Type: Feature Class
Entity Type Count: 82074
Attribute:
Attribute Label: OBJECTID
Attribute Definition: Internal feature number.
Attribute Definition Source: ESRI
Attribute Domain Values:
Unrepresentable Domain: Sequential unique whole numbers that are automatically generated.
Attribute Alias: OBJECTID
Attribute Type: OID
Attribute Width: 4
Attribute Precision: 10
Attribute Scale: 0
Attribute:
Attribute Label: Shape
Attribute Definition: Feature geometry.
Attribute Definition Source: ESRI
Attribute Domain Values:
Unrepresentable Domain: Coordinates defining the features.
Attribute Alias: Shape
Attribute Type: Geometry
Attribute Width: 4
Attribute Precision: 0
Attribute Scale: 0
Attribute:
Attribute Label: AREA_SQKM_TTM
Attribute Definition: Area in square kilometres calculated in Ten Degrees Transverse Mercator projection (500 000 metre false easting) North American Datum 1983
Attribute Definition Source: Informatics Branch 2011
Attribute Domain Values:
Unrepresentable Domain: Positive real numbers
Attribute Alias: AREA_SQKM_TTM
Attribute Type: Double
Attribute Width: 8
Attribute Precision: 38
Attribute Scale: 8
Attribute:
Attribute Label: PERIMETER_KM_TTM
Attribute Definition: Perimeter in kilometres calculated in Ten Degrees Transverse Mercator projection (500 000 metre false easting) North American Datum 1983
Attribute Definition Source: Informatics Branch 2011
Attribute Domain Values:
Unrepresentable Domain: Positive real numbers
Attribute Alias: PERIMETER_KM_TTM
Attribute Type: Double
Attribute Width: 8
Attribute Precision: 38
Attribute Scale: 8
Attribute:
Attribute Label: NSRNAME
Attribute Definition: Natural Subregion name
Attribute Definition Source: Natural Regions and Subregions of Alberta (2005)
Attribute Alias: NSRNAME
Attribute Type: String
Attribute Width: 25
Attribute Precision: 0
Attribute Scale: 0
Attribute:
Attribute Label: NRNAME
Attribute Definition: Natural Region name
Attribute Definition Source: Natural Regions and Subregions of Alberta (2005)
Attribute Alias: NRNAME
Attribute Type: String
Attribute Width: 20
Attribute Precision: 0
Attribute Scale: 0
Attribute:
Attribute Label: GLOBALID
Attribute Alias: GLOBALID
Attribute Type: GlobalID
Attribute Width: 38
Attribute Precision: 0
Attribute Scale: 0
Attribute:
Attribute Label: SHAPE.AREA
Attribute Alias: SHAPE.AREA
Attribute Type: Double
Attribute Width: 0
Attribute Precision: 0
Attribute Scale: 0
Attribute:
Attribute Label: SHAPE.LEN
Attribute Alias: SHAPE.LEN
Attribute Type: Double
Attribute Width: 0
Attribute Precision: 0
Attribute Scale: 0
Distribution Information:
Distributor:
Contact Information:
Contact Position: Data Distribution Unit, Information and Data Provisioning Services, Informatics Branch, Corporate Services Division
Contact Voice Telephone: 7804277374
Contact Electronic Mail Address: AEP.Data@gov.ab.ca
Hours: 08:15 to 16:30 Monday to Friday
Contact Instructions: For any issues encountered with downloading this product from the FTP site, please contact the Distributor Contact via the Email address or telephone number.
Contact Organization Primary:
Contact Organization: Alberta Environment and Parks, Government of Alberta
Resource Description: Downloadable Data
Distribution Liability: Under the terms of the Open Government Licence - Alberta, the Information is licensed as is, and the Information Provider excludes all representations, warranties, obligations, and liabilities, whether express or implied, to the maximum extent permitted by law. The Information Provider is not liable for any errors or omissions in the Information, and will not under any circumstances be liable for any direct, indirect, special, incidental, consequential, or other loss, injury or damage caused by its use or otherwise arising in connection with this licence or the Information, even if specifically advised of the possibility of such loss, injury or damage.
Standard Order Process:
Digital Form:
Digital Transfer Information:
Format Name: ESRI File Geodatabase
Format Specification: ESRI File Geodatabase
File Decompression Technique: File compression technology shall be utilized when required.
Digital Transfer Option:
Online Option:
Access Instructions: For any issues encountered with downloading this product from the FTP site, please contact the Distributor Contact via the Email address or telephone number.
Fees: This product is fee free under the Open Government Licence - Alberta.
Turnaround: Direct download
Technical Prerequisites: To utilize digital information, specialized graphics or GIS software (i.e. ArcInfo, ArcView, ArcGIS, or MicroStation) may be required.
Available Time Period:
Time Period Information:
Single Date/Time:
Calendar Date: Monday to Sunday
Time of Day: 24 hours
Metadata Reference Information:
Metadata Date: 20161107
Metadata Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: Alberta Environment and Parks, Government of Alberta
Contact Position: Information and Data Provisioning Services, Informatics Branch, Corporate Services Division
Contact Address:
Address Type: mailing and physical address
Address: 14th Floor, Oxbridge Place
Address: 9820 - 106 Street NW
City: Edmonton
State or Province: Alberta
Postal Code: T5K 2J6
Country: Canada
Contact Voice Telephone: 7804225117
Contact Facsimile Telephone: 7804220712
Contact Electronic Mail Address: AEP.GDAMetadata@gov.ab.ca
Hours: 08:15 to 16:30 Monday to Friday
Contact Instructions: This is the point of contact regarding the creation of, and characteristics of, metadata for the data set. Queries about the creation and/or characteristics of the metadata submitted through facsimile or electronic mail must include the salutation "Attention: Information and Data Provisioning Services, Informatics Branch, Corporate Services Division; Dataset: Lotic Riparian - Digital Elevation Model (DEM) Derived". For Distribution Information contact instructions, refer to the Distribution Information section of this metadata record.
Metadata Standard Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata Standard Version: FGDC-STD-001-1998
Metadata Time Convention: local time
Language of Metadata: en
Metadata Extensions:
Online Linkage: http://www.esri.com/metadata/esriprof80.html
Profile Name: ESRI Metadata Profile

ESRI Metadata

Modification Date: 20170913
Modification Time: 09431200
Creation Date: 20111031
Creation Time: 11391300
Synchronize Once: FALSE
Synchronization Date: 20111029
Synchronization Time: 15094400
Metadata ID: {CA8BA614-9F97-4125-92D5-42582BC3BAE0}
Published Document ID: {14E2B4A7-ACA7-4BA9-B9ED-FBE8B0FFE5B9}
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