Podcast
Questions and Answers
What is the primary purpose of property boundaries?
What is the primary purpose of property boundaries?
- They depict physical features.
- They define the extent of individual land parcels. (correct)
- They provide access rights information.
- They indicate land ownership.
Which of the following best describes unique parcel identifiers?
Which of the following best describes unique parcel identifiers?
- They serve as a general description of the land.
- They may include alphanumeric codes assigned to land parcels. (correct)
- They can represent multiple land parcels simultaneously.
- They are optional codes for land parcels.
Which classification is NOT included in land use classification?
Which classification is NOT included in land use classification?
- Agricultural
- Historical (correct)
- Industrial
- Recreational
What are easements primarily used for?
What are easements primarily used for?
Which physical feature would NOT be depicted in cadastral mapping?
Which physical feature would NOT be depicted in cadastral mapping?
What is a critical component of a unique parcel identifier?
What is a critical component of a unique parcel identifier?
What does a cadastral overlay typically include?
What does a cadastral overlay typically include?
What information is NOT typically included in land ownership data?
What information is NOT typically included in land ownership data?
What form does the unique holding identification code take?
What form does the unique holding identification code take?
Which of the following describes thematic maps?
Which of the following describes thematic maps?
What is the total number of digits in a unique holding identification code?
What is the total number of digits in a unique holding identification code?
Which type of data does a Land Information System primarily deal with?
Which type of data does a Land Information System primarily deal with?
Which codes are categorized as numeric in the unique holding identification code?
Which codes are categorized as numeric in the unique holding identification code?
What is a key characteristic of parcel identifiers?
What is a key characteristic of parcel identifiers?
Which of the following is NOT a requirement for parcel identifiers?
Which of the following is NOT a requirement for parcel identifiers?
What is the most common parcel numbering system mentioned?
What is the most common parcel numbering system mentioned?
Which element is NOT part of the Unique Parcel Identifier Number for urban areas?
Which element is NOT part of the Unique Parcel Identifier Number for urban areas?
What does accessibility in parcel identification systems refer to?
What does accessibility in parcel identification systems refer to?
Which type of map is the City Base Map most closely related to?
Which type of map is the City Base Map most closely related to?
Which option defines a characteristic of a flexible parcel identification system?
Which option defines a characteristic of a flexible parcel identification system?
What is a disadvantage of using a complex parcel identifier?
What is a disadvantage of using a complex parcel identifier?
What kind of information does non-spatial data provide?
What kind of information does non-spatial data provide?
Which spatial data source provides the highest accuracy for cadastral surveying?
Which spatial data source provides the highest accuracy for cadastral surveying?
What is a significant shortcoming of using aerial photographs as a spatial data source?
What is a significant shortcoming of using aerial photographs as a spatial data source?
Which statement accurately describes satellite images as a spatial data source?
Which statement accurately describes satellite images as a spatial data source?
Which spatial data source is noted for needing extensive manpower and time?
Which spatial data source is noted for needing extensive manpower and time?
What are the categories of non-spatial data sources?
What are the categories of non-spatial data sources?
Which scale would be more suitable for detailed planning of land use?
Which scale would be more suitable for detailed planning of land use?
Which layer would NOT typically be included in a cadastral map?
Which layer would NOT typically be included in a cadastral map?
What is one of the challenges associated with converting existing hard copy images into digital formats?
What is one of the challenges associated with converting existing hard copy images into digital formats?
What is the primary purpose of cadastral maps?
What is the primary purpose of cadastral maps?
What is the recommended orientation for maps?
What is the recommended orientation for maps?
Where should the map title be placed?
Where should the map title be placed?
What is the purpose of the scale bar on a map?
What is the purpose of the scale bar on a map?
Why is having a uniform map sheet size important?
Why is having a uniform map sheet size important?
What should be included in the map legend?
What should be included in the map legend?
What is recommended regarding parcel numbering systems?
What is recommended regarding parcel numbering systems?
How should index maps be organized in relation to the main map?
How should index maps be organized in relation to the main map?
What must be done to ensure the north arrow is clear on the map?
What must be done to ensure the north arrow is clear on the map?
Flashcards
Property Boundaries
Property Boundaries
Lines or boundaries defining the extent of individual land parcels.
Parcel Identifiers
Parcel Identifiers
Unique codes assigned to each piece of land for identification and reference.
Land Ownership Information
Land Ownership Information
Information about the legal owners of land parcels, including their names and title.
Land Use Classification
Land Use Classification
Categorization of land parcels based on their primary use, such as residential, commercial, or agricultural.
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Easements
Easements
Designated areas on a map indicating access rights or limitations, like utility lines.
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Physical Features
Physical Features
Depiction of physical features within a mapped area, including natural features (rivers, mountains) and man-made features (roads, buildings).
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Survey Control Points
Survey Control Points
Reference points established through surveying techniques to accurately position land parcels on a map.
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Scale and Legend
Scale and Legend
Information that indicates the map's scale and explains the symbols used to represent features and attributes.
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Geodetic control network
Geodetic control network
A network of points which form a precise reference framework for accurate positioning and surveying.
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Base map layer
Base map layer
A highly accurate base map layer, often derived from aerial photographs and tied to the geodetic control network.
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Cadastral overlays
Cadastral overlays
Overlays on the base map that delineate all real property parcels, including boundaries and identifiers.
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Unique Parcel Identifier
Unique Parcel Identifier
A unique identifier assigned to each parcel, making each one distinct and traceable.
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Parcel data files
Parcel data files
Data files that store information about each parcel, such as its ID, ownership, and assessment details.
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Additional overlays
Additional overlays
Additional map overlays that are relevant to the assessor, such as municipal boundaries, zoning regulations, and areas prone to flooding.
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UPIN: Unique Parcel Identifier Number
UPIN: Unique Parcel Identifier Number
A unique identifier that can be used to reference a specific parcel.
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Uniqueness of UPIN
Uniqueness of UPIN
The most important characteristic of a UPIN. Each parcel has its own unique ID, ensuring no duplicates.
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Easily Maintainable
Easily Maintainable
A parcel identification system should be easy to keep updated and able to handle changes like splitting or merging parcels.
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Flexible
Flexible
The parcel identification system should be able to be used for different purposes, like recognizing land parcels, apartments in a building, underground resources, leases, or specific pathways.
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Unique Parcel Identifier (UPIN)
Unique Parcel Identifier (UPIN)
The parcel identification system should provide unique numbers that make it easy to identify a particular location or area.
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Simple
Simple
It should be simple to understand and use, reducing errors. For example, using easy-to-follow numbers like quarter-quarter-section numbers.
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Permanent
Permanent
The parcel identifier should be constant and shouldn't change unless absolutely necessary.
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Accessible
Accessible
The system should allow users to easily access and understand information about a particular parcel.
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Hierarchical Sequential Numbering
Hierarchical Sequential Numbering
A method of organizing parcel numbers that uses a hierarchical structure, starting with the broadest area and going down to the specific parcel.
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Coordinate Locator Numbering
Coordinate Locator Numbering
A system of numbering parcels that combines Easting and Northing coordinates to create a unique identifier.
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Reduction to scale
Reduction to scale
The process of shrinking a map or photograph to a smaller scale, such as 1:5000 or 1:10000.
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Thematic maps
Thematic maps
Maps that display specific themes or information, like population density or land use. They often overlay data on a reference background.
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Unique Parcel Identifier Number (UPIN)
Unique Parcel Identifier Number (UPIN)
A unique identification number assigned to each land parcel in a rural area, using a standardized format.
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Land Information System (LIS)
Land Information System (LIS)
A system for managing land-related information using automated tools, including mapping and data storage. It combines spatial and non-spatial data.
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Spatial Data
Spatial Data
Information that describes the location and attributes of land parcels, like boundaries, size, and ownership. This includes the traditional land survey data.
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Non-Spatial Data
Non-Spatial Data
Data that describes attributes of a location, but not its exact position, such as property ownership details or tax values.
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Ground Measurement by Total Station
Ground Measurement by Total Station
Data collected using instruments that measure angles and distances from a fixed point to determine the exact location of features on the ground.
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Ground Measurement by GPS
Ground Measurement by GPS
Data collected using satellites with GPS receivers to determine the location of points on the Earth's surface.
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Comparison of Geospatial Data Sources
Comparison of Geospatial Data Sources
Comparing different data sources used in mapping, like aerial photographs or satellite images, based on their cost, accuracy, and time required for data collection.
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What are Cadastral maps?
What are Cadastral maps?
Cadastral maps are large-scale maps that show property boundaries, buildings, and other land features. They provide a detailed representation of land holdings and help with land administration, valuation, and taxation.
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What are some sources of data for Cadastral maps?
What are some sources of data for Cadastral maps?
Legal documents, field observations, surveys, and even census data can be used as sources for creating a Cadastral map.
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What are common layers found on a Cadastral map?
What are common layers found on a Cadastral map?
Topographic features, vegetation, roads, transportation networks (like airports and train lines), utilities, built-up areas (buildings, fences), and even jurisdictional boundaries are often included in Cadastral Maps.
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What are the typical scales used for Cadastral maps?
What are the typical scales used for Cadastral maps?
Cadastral maps are typically used for detailed planning and administration of land, requiring larger scales than general planning maps. Common scales for Cadastral maps range from 1:500 to 1:2000, providing a greater level of detail.
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What are the costs associated with creating a digital Cadastral map?
What are the costs associated with creating a digital Cadastral map?
Creating a digital Cadastral map can be more expensive than using existing hard copies, mainly because of the cost of software, hardware, and the time required for data conversion and manipulation.
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Map Title Placement
Map Title Placement
The title should be prominent and clearly distinct from other text on the map.
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Map Orientation
Map Orientation
Maps should generally be oriented with north at the top.
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Map Extent & Scale
Map Extent & Scale
The map's extent should be clearly defined by a 'neat line' and the scale should be chosen to show the smallest property.
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Map Sheet Size
Map Sheet Size
A consistent size for map sheets makes them easier to handle and store.
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North Arrow
North Arrow
A north arrow helps to show direction. It should be consistent in size, color, and style.
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Scale Bar
Scale Bar
A scale bar and a representative fraction (like 1:50,000) help readers understand the map's scale.
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Map Legend
Map Legend
The legend explains all the symbols and features on the map.
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Logos in Map Legend
Logos in Map Legend
Logos of participating municipalities should be included in the legend, but avoid making them illegible.
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Cadastral Maps - Overview
- Cadastral maps are technical records detailing the extent, value, and ownership of land.
- These maps often include property boundaries, land ownership details, land use, parcel identifiers, and pertinent spatial data.
- Their primary purpose is to create a comprehensive land ownership and use record for legal, administrative, and planning needs.
Cadastral Map Objectives
- Students will gain an understanding of various spatial data sources used for cadastral mapping.
- Students will identify cadastral map content and layers.
- Students will learn to recognize attributes within cadastral maps.
- Students will learn cadastral map functionality.
Cadastral Map Details
- Cadastral maps generally focus on property location, size and shape, and geospatial relationships affecting property value.
- These maps typically do not require topographical relief.
Cadastral Map Elements
- Property Boundaries: Use delineated lines that mark the extent of each land parcel.
- Parcel Identifiers: Assign unique identifiers to each parcel for easy reference in a land record system.
- Land Ownership Information: Includes data on legal ownership, names of owners, and related details.
- Land Use Classification: Categorizes parcels based on primary use (e.g., residential, commercial, agricultural).
- Easements: Illustrate designated areas or corridors affecting access rights.
- Physical Features: Depict natural and man-made features within the mapped area (e.g., rivers, roads, buildings).
- Survey Control Points: Key reference points used during survey operations.
- Scale and Legend: Provide scale information, explain symbols, and offer details on how to interpret the map.
- Non Spatial Details: Data details such as ownership details, tax values etc
Cadastral Plan
- A cadastral plan is the foundational component of a cadastre.
- This involves accurately measuring and recording property boundaries.
- A registered cadastral plan carries legal weight as a document.
- Cadastral maps are made by compiling and joining together individual cadastral plans. These serve as a land management tool but lack the legal weight of a registered cadastral plan.
Parcel Numbering Systems
- Hierarchical Sequential Numbering: A common method involving a series of numbers (e.g., BD/SA/04/0235 in a given example, although a local system).
- Coordinate Locator Numbering (US): Uses a combination of easting and northing measurements for unique identification.
Unique Parcel Identifier Number (UPIN)
- A unique code for parcels within urban areas, combining region, city/town, woreda, neighborhood, city block number, and parcel number.
- The elements for the code are given in the text.
City Maps
- Original maps created from surveyed data. (Complete planimetric information).
- Derived maps, created from the original, usually on a smaller scale. (Less detailed information).
- Thematic maps focusing on a particular theme or aspect of the City (quantitative/qualitative features).
Rural Parcel Identification
- Identification will be from top to bottom, corresponding to administrative levels (e.g., state, regional, zonal, woreda, and kebele).
- Codes are organized alphabetically and numerically to specify area subdivisions, and parcel specific identifier codes.
Data Sources
- Spatial Data Sources: Aerial images, satellite imagery, traditional ground surveys.
- Non-Spatial Data Sources: Legal documents, field observations, surveys, questionnaire results, and census data.
Cadastral Map Layers
- Topographic, Vegetation, Road, Transportation, Utilities, Administrative boundaries, Built up area, Parcels, buildings, fences.
Cadastral Map Scales
- Large-scale maps showing property boundaries and land details.
- Scales are important for various tasks (e.g., general planning, administration, land use).
Geo-spatial Data Accuracy
- The degree of conformance between map features and their real-world locations (e.g. positional, horizontal, and vertical accuracy details given).
Cadastral Map Functions
- Supports land transactions and registration.
- Facilitates land tax assessment and valuation.
- Helps manage land use, infrastructure, and development.
Cartographic Map Design
- Map Layout: Choosing between portrait and landscape orientations, and placing elements such as titles and legends strategically to avoid overlaps.
- Map Title: Use large, bold text that's clear and stands out from other map annotations.
- Orientation: Use a north arrow for clear direction, usually placed above or near the scale bar.
- Sheet Size: Uniform sheet sizes for efficient management and storage.
- Scale Bar: Include representative fraction, for scales, and scale bar is also necessary.
- Legend: Include complete and accurate explanations of features, icons, symbols, and colors used on the map.
Discussion Questions
- Answers to questions relating to map contents, north arrows, preparation guidelines, functions, and land valuation. Provided for reference.
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