Licences & Attributions
FloodVerity is built on open governmental data and open-source software. This page lists the attributions those licences require, alongside a summary of the third-party software notices.
Data sources
Model results, maps and the town pages draw on the following sources. Each is free for commercial use under its licence and is attributed as required.
| Source | Licence | Required attribution |
|---|---|---|
| HRDEM / MRDEM elevation, Canadian Hydrospatial & National Hydro Network, National Road Network, Land Cover of Canada, AAFC Crop Inventory, CHS NONNA bathymetry (Natural Resources Canada / partners) | Open Government Licence – Canada | Contains information licensed under the Open Government Licence – Canada. © Natural Resources Canada. |
| Environment and Climate Change Canada hydrometric data (HYDAT & real-time gauges) | ECCC end-use licence (OGL-aligned) | Contains information licensed under the Environment and Climate Change Canada Data Servers End-use Licence. © Environment and Climate Change Canada. |
| Environment and Climate Change Canada Short Duration Rainfall Intensity-Duration-Frequency (IDF) data | ECCC end-use licence (OGL-aligned) | Data Source: Environment and Climate Change Canada, Short Duration Rainfall Intensity-Duration-Frequency Data, used under the ECCC Data Servers End-use Licence. |
| Ville de Montréal storm sewer catch basins (Puisards d'égouts) | CC BY 4.0 | Contains information made available by Ville de Montréal, licensed under CC BY 4.0. |
| Statistics Canada, 2021 Census Subdivision Boundary File (cartographic) | Statistics Canada Open Licence | Adapted from Statistics Canada, Census Subdivision Boundary File (cartographic), 2021 Census. This does not constitute an endorsement by Statistics Canada of this product. Used only to delimit the areas described on the town pages. |
| Statistics Canada, 2021 Province and Territory and Census Subdivision Boundary Files (digital) | Statistics Canada Open Licence | Adapted from Statistics Canada, Province and Territory Digital Boundary File and Census Subdivision Digital Boundary File, 2021 Census. This does not constitute an endorsement by Statistics Canada of this product. Used only to delimit the area where the check is sold: Québec and the City of Ottawa. |
| Ville de Montréal, administrative boundaries of the Montréal agglomeration (Limites administratives de l'agglomération de Montréal) | CC BY 4.0 | Contains information made available by Ville de Montréal, licensed under CC BY 4.0. Used only to delimit the areas described on the town pages. |
| Québec LiDAR terrain model (MNT) | CC BY 4.0 | Contains information from Gouvernement du Québec, licensed under CC BY 4.0. |
| OpenStreetMap building footprints and hydraulic structures | ODbL 1.0 | © OpenStreetMap contributors, licensed under the Open Database Licence (ODbL). |
| Global Dam Watch dam and reservoir database | CC BY 4.0 | Global Dam Watch database v1.0 (Lehner et al. 2024), licensed CC BY 4.0. |
| CanVec hydraulic structures (Natural Resources Canada) | Open Government Licence – Canada | Contains information licensed under the Open Government Licence – Canada. © Natural Resources Canada. |
Basemaps & imagery
When a basemap or satellite layer is displayed, its attribution is shown on the map and reproduced here.
| Source | Licence | Required attribution |
|---|---|---|
| Canada Base Map – Transportation (CBMT) | Open Government Licence – Canada | Contains information licensed under the Open Government Licence – Canada. © Natural Resources Canada. |
| Esri World Imagery (satellite, when enabled) | Esri Web Services Terms | Imagery © Esri, Maxar, Earthstar Geographics, and the GIS User Community. |
Third-party software
FloodVerity distributes open-source software components under permissive licences and, for a small number of libraries, copyleft licences.
The files below provide copyright and permission notices, licence texts, and references to the corresponding library sources.
Licences in use include the MIT, BSD-3-Clause, ISC, PostgreSQL and Apache-2.0 (some with the LLVM exception) permissive licences.
The LGPL libraries include psycopg under LGPL-3.0, GEOS bundled within Shapely under LGPL-2.1, and libvips supplied with sharp under LGPL-3.0-or-later. Their licence texts and corresponding upstream source references are included in the notices file.
Attribution requirements are recorded in docs/LICENSING.md.