Geographic Information Services

Geographic Information Services (GIS) is the technology used to collect, manage, and analyze spatial data, which includes both mapping and tabular data that has reference to a location on the surface of the earth. The NPCA relies heavily on spatial data, the bulk of which is topographic, environmental or natural resources based land information, to support or directly carry out most of its day to day tasks.

Our GIS department’s data collection efforts focus on producing detailed large scale data products in order to support and inform our decision-making models and tools. Most of this information is shared with our local, regional and provincial partners to provide accurate research and application data about the nature and physicality of our watersheds, natural areas and environmental conditions. Mapping and data is also made available to the public to help you plan a project, find a park, or better understand our watershed.

The NPCA Watershed Explorer is an online interactive mapping tool developed in cooperation with Niagara Region to provide NPCA geographic information to the public. Use the map to explore detailed visual information about NPCA planning and permitting interests, regulated areas, watershed monitoring efforts, natural area features and our Conservation Areas.

Online Information Access

The NPCA also publishes water quantity and quality data through our NPCA Hydroserver. The HydroServer is part of the NPCA’s developing Hydrologic Information System (HIS), providing publication, discovery and access to its hydrologic data through CUAHSI-HIS web services, and includes GIS water resources data. Visit for more information and data access.

Geospatial data is also made available to more advanced users through the NPCA’s Web Mapping Services (WMS) which provide up to date data in a standard that can be used in custom applications or GIS software. Explore these services at the links below:

NPCA Water Resources WMS

NPCA Buffalo NEXRAD Rain Data WMS