Topographic Mapping – Impermeable Surface

  • The Impermeable Surface dataset is a 1-bit raster indicating mainly artificial structures

o Pixel values of 0 indicate impermeable land

o Pixel values of 1 indicate permeable land

  • Impermeable surfaces will not absorb water, and will instead cause surface runoff of water

  • Permeable surfaces will absorb water

Please note: Data was derived from remotely sensed multispectral optical data. Data is limited to the City of Toronto geographic boundary. The methodologies used in this process are under development, and known artefacts and omissions exist within it. Data is intended for planning use only, not to be used as a replacement for rigorous field inspection and validation.

Dados e recursos

Informações Adicionais

Campo Valor
Dataset Category Document
Refresh Rate As available
Collection Method
Excerpt Permeable vs Impermeable land raster with 0.5m ground resolution, derived from remotely sensed multispectral imagery.
Limitations
Owner Division Information & Technology
Owner Section
Owner Unit
Owner Email gcc@toronto.ca
E-mail do autor gcc@toronto.ca
E-mail do Mantenedor gcc@toronto.ca
Autor gcc@toronto.ca
Civic Issues Mobility
Formatos ZIP
Topics
  • Locations and mapping
  • Environment
  • Development and infrastructure
Fonte
Information URL
URL da imagem
Última Atualização 2019-07-23 20:08:39.088138
Is Retired? False
Date Published 2019-07-23 17:35:42.155487