Keywords
Theme:
Cadastral, Township, Dominion Land Survey System, Section, Quarter Section, Legal Subdivisions, Monuments, LSD, Reference Grid
Place:
Saskatchewan, Canada, North America
Description
-
Abstract
The ISC Sask Grid TFM 2008 dataset is a reference grid approximately depicting the township system in the province of Saskatchewan as reflected in the original township surveys and theoretic projections of the Dominion Land Survey System. The data set covers the entire province and can be maintained via change records on a yearly basis. The data is topologically structured and suitable for use in GIS and CAD systems.
-
Purpose
The ISC Sask Grid TFM 2008 dataset is designed to serve as the reference grid for a range of applications including oil and gas, land use, planning, emergency response, demographic analysis, land management, and facility management.
-
Supplementary Information
Questions on product may be directed to Pat Pierce ( (306) 787-0256 or Pat.Pierce@isc.ca) or Perry Frischholz ( (306) 787-0665 or Perry.Frischholz@isc.ca).
»
Status of the data
Complete
Data update frequency:
Annually
»
Time period for which the data is relevant
Date and time:
First township plans approved & confirmed 1880
Description:
ground condition
»
Publication Information
Who created the data: Information Services Corporation of Saskatchewan
Date and time:
2008-01-11
Publisher and place:
Information Services Corporation of Saskatchewan, Regina, Saskatchewan, Canada
»
Data storage and access information
Type of data: vector digital data
Location of the data:
http://www.geosask.ca
»
Accessing the data
Data format: SHP
Access instructions: See the pre-packaged gallery at www.geosask.ca or contact the ISC Geomatics Distribution Centre for further assistance Toll Free at 1-866-420-6577 or (306) 787-6577 (Regina) or by email at saskmaps@isc.ca
Available media: DVD-ROM/CD-ROM
Available media: Digital Download
»
Accessing the data
Data format: ASCII Point Coordinate Set
Access instructions: See the pre-packaged gallery at www.geosask.ca or contact the ISC Geomatics Distribution Centre for further assistance Toll Free at 1-866-420-6577 or (306) 787-6577 (Regina) or by email at saskmaps@isc.ca
Available media: DVD-ROM/CD-ROM
Available media: Digital Download
»
Constraints on accessing and using the data
Access constraints:
The data set is licensed for use with no restrictions on who may obtain a license.
Use constraints:
The standard license for this data prohibits redistribution of the data in whole or in part. A resale license is available. There are some restrictions (designed to preserve the integrity of the data) on the presentation of the information as maps on a web site and on the distribution of products derived from this data.
»
Details about this document
Contents last updated: 20080124
at time
14113300
Contents last reviewed: 2008-01-11
Contents to be reviewed: Annually or as required
»
Who completed this document
Information Services Corporation of Saskatchewan
mailing and physical address:
1301 1st Ave
Regina, Saskatchewan S4R 8H2
Canada
1-800-ASK-ISC1 (voice)
(306) 798-2290 (fax)saskmaps@isc.ca
Hours of service:
8:00 A.M. to 5:00 P.M. CST Monday through Friday
Contact Instructions:
Please use the above contact for any question on the MetaData content or product content.
»
Standards used to create this document
Standard name: FGDC Content Standard for Digital Geospatial Metadata
Standard version: FGDC-STD-001-1998
Time convention used in this document: local time
»
Data Quality
- Attribute Accuracy:
-
- Attribute Accuracy Report:
- * Attributes have been created by two means, depending on the attribute. Some, like the PPID, are generated by the system according to a set of rules. Others, like the legal land descriptors, have been manually entered (transcribed) from the source paper documents. Transcribed values are checked manually on a sampling basis to identify errors. As well external sources of information have been used to validate the values wherever possible. There has been some limited quantification of the accuracy rate for the attribute values, and it appears to be very good. The monument theme attributes qualification has been proven to be better than 98% accurate* General Principles & Rules * The product is spatially integrated with the Cadastral Fabric base. * The aggregate layer is continuously maintained and provides; current status of data; point in time view of data; and date range in support of change records * The theoretic LSD theme is an overlay theme and does not fracture the line work of the quarter sections or other township fabric components, while corners are coincident. * Parent child relationships between township/section/quarter section/LSD are maintained in ISDB. * There are not any LSDs within river-lots or Hudson Bay Company reserves. * Data has been attributed to show the survey status (surveyed or un-surveyed) distinguished by the feature code. * Northern Theoretic Township Geographic coordinates were assembled or calculated for any section corners with sufficient ties to the geodetic framework, along meridians and baselines. Where possible, geodetic control was brought in where northern roads intersected baselines or meridians. Where geographic coordinate values were missing along meridians theoretic township dimensions were applied and theoretic position of points along all meridians were derived. Un-surveyed baselines were projected west from the meridian, holding the latitude at the meridian fixed all the way to the next meridian west. The deflection from baseline to west meridian was applied at the township corner of the last or partial township. From each baseline, the eastern township edges were projected 2 townships north and south. Distances across the resulting correction lines were checked and the coordinate values at the township corners adjusted to make the distance across the correction line approximately one chain in width. All township outlines were then filled-in based on the 3rd system of survey. Road allowances were accounted for. * Northern theoretic townships match existing surveyed base and meridian lines and do not contain separate parcels for road allowances (road allowances are included as part of the quarter sections and LSD's rather than being a separate entity). * Discrepancies between northern theoretic township positions and surveyed baselines are placed in the last section adjoining these baselines. * LSD's in the southern surveyed areas were generated from quarter section monument values, following Dominion Land Survey System rules. * Some Indian reserves, parks and Hudson Bay reserves contain township fabric, but this was not done consistently. * In the southern surveyed portion of Saskatchewan, road allowances are excluded from the quarter sections and LSDs (except southern theoretic LSDs). * Coordinate Disclaimer - Coordinates provided by this dataset are not to be used for placing township or section corners, as these coordinates represent a theoretic reference grid not the positions of township fabric points either surveyed or theoretic. In order to establish township or section corners in theoretic or un-surveyed areas written instructions describing method for establishment must first be received from the Controller of Surveys. As coordinates represent a theoretic reference grid, they may be used to locate existing monuments in surveyed areas.
- Logical Consistency Report:
- All line work data is topologically clean with no gaps or overlaps. The polygonal data does have some gaps between polygons (referred to as "slivers") that were created during the data assembly and loading. The vast majority of these have been eliminated but the remaining slivers require manual intervention to clean them up. These are being removed in conjunction with the maintenance of the data. The number of slivers in the data represent less than 0.1% of the total features.
- Completeness Report:
- The data is complete with respect to the entry of information from township plans. All plans that represent currently active primary surveys have been entered. New restoration plans are entered into the Integrated Spatial Database (ISDB) as they are approved, and the ISC SaskGIS Township Grid Dataset is produced annually.
- Positional Accuracy:
-
- Horizontal Positional Accuracy:
-
- Horizontal Positional Accuracy Report:
- The absolute positions in this data set relative to datum are correct to within 5-10 metres in the rural portions of the province and to within 1-2 metres in the urban portions. The relative accuracies are better than 5 metres in the rural areas and 1 metre in the urban areas for points that are near each other. The relative accuracies decrease as the distance between points increases.
-
- Horizontal Positional Accuracy Value:
varies
- Horizontal Positional Accuracy Explanation:
- The accuracy of the coordinate varies with the age of the surveys, the quality of the surveys, the quality of the geodetic control and the quality of the ties to the geodetic control. There has been no attempt to quantify these contributing factors. The coordinates were calculated using ties to geodetic control and information shown on plans of survey and then fit together. Where the fit between the various plans was within acceptable limits rubber sheeted (adjusted) to fit. Where plans did not fit together properly other sources of information were used for rubber sheeting, including, but not only, historical survey plans, field measurements, and aerial photographs.
-
- Vertical Positional Accuracy:
-
- Vertical Positional Accuracy Report:
- This product does not have a vertical component.
- Lineage:
-
-
- Source Information:
-
- Source Citation:
-
- Citation Information:
-
- Originator:
N/A
- Publication Date:
N/A
- Title:
- Township Plans
- Source Scale Denominator:
Variable
- Type of Source Media:
paper
-
- Process Step:
-
- Process Description:
- N/A
- Process Date:
N/A
Horizontal coordinate system
Projected coordinate system name: Extended UTM Zone 13
Geographic coordinate system name: Canadian Spatial Reference System NAD83 (CSRS98)
»
Details
Grid Coordinate System Name: Universal Transverse Mercator
UTM Zone Number: 13
Transverse Mercator Projection
Scale Factor at Central Meridian: 0.9996
Longitude of Central Meridian: 105 W
Latitude of Projection Origin: 0
False Easting: 500000
False Northing: 0
Planar Coordinate Information
Planar Distance Units: metres
Coordinate Encoding Method: coordinate pair
Coordinate Representation
Abscissa Resolution: .01
Ordinate Resolution: .01
Geodetic Model
Horizontal Datum Name: North American Datum of 1983
Ellipsoid Name: Geodetic Reference System 80
Semi-major Axis: 6378137.000
Denominator of Flattening Ratio: 298.2572235630
Altitude System Definition
Datum Name: N/A
Resolution: N/A
Distance Units: N/A
Encoding Method: N/A
Depth System Definition
Datum Name: N/A
Resolution: N/A
Distance Units: N/A
Encoding Method: N/A
_________________
Bounding coordinates
Horizontal
In decimal degrees
West:
-110
East:
-101.4
North:
60
South:
49
_________________
Spatial data quality
»
Horizontal positional accuracy
The absolute positions in this data set relative to datum are correct to within 5-10 metres in the rural portions of the province and to within 1-2 metres in the urban portions. The relative accuracies are better than 5 metres in the rural areas and 1 metre in the urban areas for points that are near each other. The relative accuracies decrease as the distance between points increases.
Estimated accuracy: varies
How this value was determined:
The accuracy of the coordinate varies with the age of the surveys, the quality of the surveys, the quality of the geodetic control and the quality of the ties to the geodetic control. There has been no attempt to quantify these contributing factors. The coordinates were calculated using ties to geodetic control and information shown on plans of survey and then fit together. Where the fit between the various plans was within acceptable limits rubber sheeted (adjusted) to fit. Where plans did not fit together properly other sources of information were used for rubber sheeting, including, but not only, historical survey plans, field measurements, and aerial photographs.
»
Vertical positional accuracy
This product does not have a vertical component.
»
SDTS description
Feature class: SDTS feature type, feature count
Feature class:
N/A
A unit of land equal to one quarter of a section as defined by the Dominion Land Survey System
»
PPID
Permanent Provincial IDentifier. Unique identifier. No other instance of this or any other type of object will have the same ID. Used for change detection and notification and for linking external information to this object.
| Field Type: |
Character |
| Field Width: |
10 |
| Domain: |
From 0108000001 to 0108ZZZZZZ |
»
EFFECTV_DT
The date and time this object was added to or updated in the data base
| Field Type: |
Date |
| Domain: |
Date and time coded as a character string in the format "YYYY-MM-DD HH:MM:SS". Leading zeros are included where required. |
»
FCODE
Identifies the type of object
| Field Type: |
Character |
| Field Width: |
12 |
| Domain: |
Value |
Description |
|
|
SURVEYED |
N/A |
|
|
THEORETIC |
N/A |
»
QSECID
The identifier of the quarter section.
| Domain: |
Value |
Description |
|
|
NW |
North west |
|
|
NE |
North East |
|
|
SW |
South West |
|
|
SE |
South East |
»
PARENTSECT
The PPID of the section that this quarter section is a subdivision of
| Field Type: |
Character |
| Field Width: |
10 |
| Domain: |
From 0110000001 to 0110ZZZZZZ |
»
SECTION
The number of the section.
| Field Type: |
Character |
| Field Width: |
3 |
| Domain: |
From 1 to 36 |
»
TOWNSHIP
The township number of the township. The identifier of the township is the combination of the township number, the range number, and the meridian number
| Field Type: |
Character |
| Field Width: |
3 |
»
RANGE
The range number of the township.
| Field Type: |
Character |
| Field Width: |
3 |
»
MERIDIAN
The meridian number of the township.
| Field Type: |
Character |
| Field Width: |
1 |
The first level of subdivision of a township as defined by the Dominion Land Survey System. A township normally has 36 sections.
»
PPID
Permanent Provincial IDentifier. Unique identifier. No other instance of this or any other type of object will have the same ID. Used for change detection and notification and for linking external information to this object.
| Field Type: |
Character |
| Field Width: |
10 |
| Domain: |
From 0110000001 to 0110ZZZZZZ |
»
EFFECTV_DT
The date and time this object was added to or updated in the data base
| Field Type: |
Date |
| Domain: |
Date and time coded as a character string in the format "YYYY-MM-DD HH:MM:SS". Leading zeros are included where required. |
»
FCODE
Identifies the type of object
| Field Type: |
Character |
| Field Width: |
12 |
| Domain: |
Value |
Description |
|
|
SURVEYED |
N/A |
|
|
THEORETIC |
N/A |
»
SECTION
The number of the section.
| Field Type: |
Character |
| Field Width: |
3 |
| Domain: |
From 1 to 36 |
»
PARENTTWP
The PPID of the township that this section is in.
| Field Type: |
Character |
| Field Width: |
10 |
| Domain: |
From 0130000001 to 0130ZZZZZZ |
»
TOWNSHIP
The township number of the township. The identifier of the township is the combination of the township number, the range number, and the meridian number
| Field Type: |
Character |
| Field Width: |
3 |
»
RANGE
The range number of the township.
| Field Type: |
Character |
| Field Width: |
3 |
»
MERIDIAN
The meridian number of the township.
| Field Type: |
Character |
| Field Width: |
1 |
The first level of subdivision of the land under the Dominion Land Survey System. A township is nominally a 6 mile by 6 mile square area. Townships are further subdivided into sections and road allowances.
»
PPID
Permanent Provincial IDentifier. Unique identifier. No other instance of this or any other type of object will have the same ID. Used for change detection and notification and for linking external information to this object.
| Field Type: |
Character |
| Field Width: |
10 |
| Domain: |
From 0130000001 to 0130ZZZZZZ |
»
EFFECTV_DT
The date and time this object was added to or updated in the data base
| Field Type: |
Date |
| Domain: |
Date and time coded as a character string in the format "YYYY-MM-DD HH:MM:SS". Leading zeros are included where required. |
»
FCODE
Identifies the type of object
| Domain: |
Value |
Description |
|
|
SURVEYED |
N/A |
|
|
THEORETIC |
N/A |
»
TOWNSHIP
The township number of the township. The identifier of the township is the combination of the township number, the range number, and the meridian number.
| Field Type: |
Character |
| Field Width: |
3 |
»
RANGE
The range number of the township.
| Field Type: |
Character |
| Field Width: |
3 |
»
MERIDIAN
The meridian number of the township.
| Field Type: |
Character |
| Field Width: |
1 |
»
TRM
The Township, Range, and Meridian numbers concatenated into a single character string. This is a derived value included for ease of searching and labelling.
| Field Type: |
Character |
| Field Width: |
10 |
A unit of land equal to one 16th of a section as defined by the Dominion Land Survey System
»
PPID
Permanent Provincial IDentifier. Unique identifier. No other instance of this or any other type of object will have the same ID. Used for change detection and notification and for linking external information to this object.
| Field Type: |
Character |
| Field Width: |
10 |
| Domain: |
From 0165000001 to 0165ZZZZZZ |
»
EFFECTV_DT
The date and time this object was added to or updated in the data base
| Field Type: |
Date |
| Domain: |
Date and time coded as a character string in the format "YYYY-MM-DD HH:MM:SS". Leading zeros are included where required. |
»
FCODE
Identifies the type of object
| Field Type: |
Character |
| Field Width: |
12 |
| Domain: |
Value |
Description |
|
|
THEORETIC |
N/A |
»
LSDNUMBER
The LSD number
| Field Type: |
Character |
| Field Width: |
2 |
| Domain: |
From 01 to 16 |
»
QSECID
The quarter identifier
| Field Type: |
Character |
| Field Width: |
2 |
| Domain: |
Value |
Description |
|
|
NE |
This is the northeast quarter LSD |
|
|
NW |
This is the northwest quarter LSD |
|
|
SE |
This is the southeast quarter LSD |
|
|
SW |
This is the southwest quarter LSD |
»
SECTION
The number of the section that this LSD is a subdivision of
| Field Type: |
Character |
| Field Width: |
3 |
| Domain: |
From 1 to 36 |
»
TOWNSHIP
The township number of the township. The identifier of the township is the combination of the township number, the range number, and the meridian number.
| Field Type: |
Character |
| Field Width: |
3 |
»
RANGE
The range number portion of the township identifier for the township that this LSD is in.
| Field Type: |
Character |
| Field Width: |
3 |
»
MERIDIAN
The meridian number portion of the township identifier for the township that this LSD is in.
| Field Type: |
Character |
| Field Width: |
1 |
»
PARENTQSEC
The PPID of the quarter section in which the LSD is located.
| Domain: |
From 0108000001 to 0108ZZZZZZ |
»
LLD
The LSD, Quarter Section, Township, Range, and Meridian numbers concatenated into a single character string. This is a derived value included for ease of searching and labelling.
| Field Type: |
Character |
| Field Width: |
20 |
A survey corner that has a pin located at it. Note - Not all survey pins shown on the plans of survey are included in this data set. All primary (township) survey corners are included but only some secondary pins are included.
»
PPID
Permanent Provincial IDentifier. Unique identifier. No other instance of this or any other type of object will have the same ID. Used for change detection and notification and for linking external information to this object.
| Field Type: |
Character |
| Field Width: |
10 |
| Domain: |
From 0400000001 to 0400ZZZZZZ |
»
EFFECTV_DT
The date and time this object was added to or updated in the data base
| Field Type: |
Date |
| Domain: |
Date and time coded as a character string in the format "YYYY-MM-DD HH:MM:SS". Leading zeros are included where required. |
»
FCODE
Identifies the type of object
| Field Type: |
Character |
| Field Width: |
12 |
| Domain: |
Value |
Description |
|
|
SURVEYED |
|
|
|
THEORETIC |
|
»
SMNUMBER
Survey monument number (This is included for backwards compatibility to the ASCII monument file. The PPID should be used as the primary reference.)
| Field Type: |
Character |
| Field Width: |
12 |
»
TOWNSHIP
The township number of the township that this monument is a corner in.
| Field Type: |
Character |
| Field Width: |
3 |
»
RANGE
The range number of the township that this monument is a corner in.
| Field Type: |
Character |
| Field Width: |
3 |
»
MERIDIAN
The meridian number of the township that this monument is a corner in.
| Field Type: |
Character |
| Field Width: |
1 |
»
CORNER
This describes at which corner of a primary survey the monument is located.
| Field Type: |
Character |
| Field Width: |
3 |
| Domain: |
Value |
Description |
|
|
NW |
The monument is at the north west corner of a section |
|
|
NQ |
The monument is located at about the mid point of the north boundary of the section (where the quarter line intersects the section line). |
|
|
NE |
The monument is located at the north east corner of a section. |
|
|
SW |
The monument is located at the south west corner of a section. |
|
|
SQ |
The monument is located at about the mid point of the south boundary of the section (where the quarter line intersects the section line). |
|
|
SE |
The monument is located at the south east corner of a section. |
|
|
EQ |
The monument is located at about the mid point of the east boundary of the section (where the quarter line intersects the section line). |
|
|
QQ |
The monument is located at about the middle of a section (where the two quarter lines intersect). |
|
|
WQ |
The monument is located at about the mid point of the west boundary of the section (where the quarter line intersects the section line). |
|
|
XX |
The monument is not located at a quarter or section corner. Attributes are limited. |
|
|
NQE |
The monument is located on the north side of a road allowance passing through the middle of a section (under the third modified survey system) that is on the east side of the section. |
|
|
NQQ |
The monument is located on the north side of a road allowance passing through the middle of a section (under the third modified survey system) that is at he mid point of the section line (where the quarter line intersects the section line). |
|
|
NQW |
The monument is located on the north side of a road allowance passing through the middle of a section (under the third modified survey system) that is on the west side of the section. |
»
SECTION
The number of the section of the township that this monument is a corner for.
| Field Type: |
Character |
| Field Width: |
3 |
| Domain: |
From 1 to 36 |
»
X
This is the x-coordinate of the point (Easting)
| Field Type: |
Number |
| Field Width: |
9.2 |
| Domain: |
From 133,000 to 766,000 |
»
Y
This is the y-coordiante of the point (Northing)
| Field Type: |
Number |
| Field Width: |
10.2 |
| Domain: |
From 5,439,000 to 6,546,000 |
