MAPS & GEODATA WEBSITE https://brocku.ca/library/mdgl/
Niagara Air Photos https://arcg.is/OHiz4
- All flight line indexes
- Historical imagery 1921 – 1972 can be viewed from the website
- Orthoimagery 1995 - 2018 can be viewed from the website
- This is an essential source for Niagara imagery
- Provides an excellent resource for detecting landscape changes over a time period
- Traditional air photo retrieval instructions are posted on the index cabinet
- (Air photo interpretation for identifying certain features will be essential)
- Topographic Maps of Niagara date from 1904 to 2000’s (1:50k; 1:25k)
- Niagara Historical Map Gallery is rich in 18 and 19c maps, older city plans of Niagara
NPCA Watershed Explorer https://bit.ly/2tJUNSc
- Thematic layers related to watershed management: ELC Community Natural Areas [NAI]: a classification of natural areas, i.e marsh; forest, etc.; Water quality Network, and Groundwater Network (Watershed Monitoring)
- 2020 imagery, Watershed Planning Areas, Sub-watersheds (Boundaries)
- Contour interval is 1 metre
NPCA Watershed Health https://npca.ca/watershed-health
NPCA Open GIS Data Portal https://gis-npca-camaps.opendata.arcgis.com/
Ontario Flow Assessment Tool (OFAT) https://bit.ly/3tAkPah
- OFAT creates watersheds, calculates watershed characteristics, executes hydrology models and reports water flow statistics.
***Good tool for mapping data sampling sites; adding annotation; creating boundaries.
Google Maps https://maps.google.ca/
- Useful for navigating and viewing areas using ‘Street View’
- ‘Earth’ view (bottom left corner) can also be useful for viewing some of the most recent imagery
Mapping GPS Data (tutorial)
- Instructions for using GPS to capture data sampling sites and mapping them in a GIS, or other mapping tool.
- ArcGIS Online also accepts a CSV data file for mapping x, y data.
HOW TO Reference Maps & air photos (pdf)