Over the course of 2015, the City of Prince George GIS department endeavors to offer more mapping services to the public. Aside from PGMap, we are focusing on targeted mobile friendly applications through our new Portal.
The first of which is the new Interactive Snow and Ice Map! Access it through the portal or click on the image below.
Interactive Snow and Ice Map: click on any road within the city to view information about:
- Priority Level
- Snow removal timeframe
- Applicable parking restrictions
PGMap: the City of Prince George's On-line Geographic Information System
Use it to:
- view property boundaries
- aerial photography
- search by address, legal description, parcel Identification number
- verify zoning and other City bylaw area boundaries
- find parks and trails
- print property reports and high quality maps
- view service connections
Over time, this service will continue to expand as more features are added. We plan on upgrading to HTML5 in 2015 which supports multiple devices (phones, tablets, desktop). Please take some time to review PGMap and let us know your thoughts. Comments can be made to firstname.lastname@example.org. We look forward to ensuring this service meets the needs of our users.
PGMap requires a Microsoft Silverlight Plugin which is automatically installed with most modern web browsers. If you are having issues running PGMap, try upgrading your web browser. The plug in is available from the Microsoft Silverlight website here
The current version of PGMap is available for the following Operating Systems;
and will run in the following web browsers:
For online Help click here.
New 2014 Imagery Added to PGMap!
Aerial photography was flown last spring on June 1st, 2014 and has now been added to PGMap.
This imagery is of very high resolution (7.5cm), compared to that of the previous 2010 (20cm) imagery.
The City of Prince George will be adding other value added datasets to PGMap in the near future including:
- LiDAR based hillshade (high res)
- An updated contour base map
- Near-Infrared spectroscopy
Colour Infrared imagery
The 2014 imagery for the City of Prince George includes 4 colour bands, allowing for the display and analysis in natural colour or colour infrared. The infrared imagery serves a variety of purposes from observing vegetation to supporting identification and mapping of habitat areas through photo interpretation. It was used extensively during WWI by the military for the detection of camouflage, to distinguish between vegetation and buildings, better identifying potential enemy targets. The colour infrared (CIR) imagery is most often used today in vegetation studies such as: area of vegetation, vegetation health analysis, and submerged vegetation mapping, and vegetated vs. non-vegetated areas based on the distinct signature in the infrared spectrum.
· Intense bright red - typically represents vigorously growing, dense vegetation that is producing a large amount of chlorophyll.
· Lighter tones of red, magenta, pinks - generally represent vegetation that does not contain as much chlorophyll such as mature stands of evergreens or conifers. Agricultural fields nearing the end of the growing season, and dead or unhealthy plants often appear in less reds, green, or tan.
· White, blue, green, or tan - These colours often represent soils. Darker shades of soil generally indicate higher moisture levels or organic matter. Soil composition also affects soil colour appearance, with clayey soils appearing in darker tans and blue-greens, and sandy soils appearing white, gray, or light tan. Pale or light blue can represent sediment-laden water. Buildings and manmade materials such as concrete and dry gravel generally appear white to light blue in CIR photos.
· Dark blue to black – Water ranges from shades of blue to black depending on the clarity and depth. Usually, the clearer the water, the darker the colour. However, shallow streams will often display the colours associated with the materials in their stream beds. If the stream bed is made of sand, the colour will appear white or very light tan due to the high reflective property of sand. Asphalt roads generally appear dark blue to black.
Ordinary colour photography records essentially what we see with the naked eye, but CIR sensors use the light spectrum just beyond the sensitivity of the human eye. This portion of the spectrum is known as the “near-infrared” or photographic-infrared region.
The thermal (or heat-emitting) properties of the terrain and vegetation are not recorded by CIR sensors. This is a common misunderstanding. With CIR sensors, one is measuring only the amount of near-infrared energy being reflected or absorbed by a given surface, not it’s temperature.
The basic principle relies on the fact that, due to the spongy layers found on their backsides, leaves reflect a lot of light in the near infrared, in stark contrast with most non-plant objects. When the plant becomes dehydrated or stressed, the spongy layer collapses and the leaves reflect less NIR light, but the same amount in the visible range. Thus, mathematically combining these two signals can help differentiate plant from non-plant and healthy plant from sickly plant
We have used the following parameters in order to display the infrared imagery;
Connecticut Environmental Conditions Online: http://cteco.uconn.edu/guides/Ortho_2010_Infrared_NAIP.htm
Actionable Intelligence for Precision Agriculture: http://agribotix.com/blog/2014/6/10/misconceptions-about-uav-collected-ndvi-imagery-and-the-agribotix-experience-in-ground-truthing-these-images-for-agriculture
Los Angeles County GIS Data Portal: http://egis3.lacounty.gov/dataportal/2010/02/19/2006-4-inch-color-infrared-cir-orthophotography/
Notice: Land Title Records
The City of Prince George has had to removed public access to Land title records. Land title plans are available from the Land Title and Survey Authority of BC. You can access their website from the following hyperlink: http://www.ltsa.ca/cms/ . According to the Land Title and Survey Authority of BC, "making these records available at no charge for any use other than assessment or taxation purposes is not permitted”. It is for this reason that we have removed access to Land title records through PGMap. We regret any inconvenience this may cause.
ESRI Community Maps
The City of Prince George has contributed it's data to the ESRI Canada Community Maps program. ESRI has now made this map service available for free. You can access the Prince George Community Maps service using the link below.
ESRI Community Maps, Prince George
Download PDF Maps
The City of Prince George also offers a digital street centreline map in PDF format. It has a file size of 4.48MB.
Open Data Catalogue
To access the City of Prince George’s Open Data Catalogue, click here.
Property Information Search
You can also search property information using our Property Information Web Inquiry. This is separate from our mapping applications.
For information about PGMap or GIS at the City of Prince George email: email@example.com