Ottawa River Map
The Ottawa River is a 1,270 km (790 mi) river in Canada. This map shows its course from Lac des Outaouais to the St. Lawrence River on shaded relief, with its river network, lakes, borders and major cities.
How to read this map
The Ottawa River is about 1,270 km (790 mi) long and drains a basin of about 146,000 km² (56,400 sq mi). Its average discharge is about 5 m³/s (189 cu ft/s). It rises at Lac des Outaouais and flows into the St. Lawrence River. Tributaries include Rivière Kinojévis, Kipawa River, Rivière Dumoine, Noire River, Coulonge River, Rivière Rouge, Rivière du Nord and Blanche River.
The highlighted blue line is the course of the Ottawa River as mapped by Natural Earth. Towns and cities on the map include Montreal, Ottawa, Greater Sudbury, Saint-Jérôme and North Bay.
Greens show lower elevations; tan and brown show higher land, with pale tones toward the highest terrain. Shadows emphasize the slopes, and vertical relief is exaggerated so landforms are easier to read. Dashed lines show country borders, and fine dashed lines show state or province borders.
The relief uses Terrain Tiles (SRTM, GMTED2010 and ETOPO1 elevation data). Rivers, lakes, borders and the course of the Ottawa River come from Natural Earth, and the figures on this page from Wikidata. Natural Earth draws features at a small scale, so the line is a guide to where the Ottawa River is, not a surveyed boundary.
Blank physical map
The blank version keeps the mapped features and removes the place labels. Download it for a geography worksheet or practice identifying the features.
Ottawa River facts
| Fact | Value |
|---|---|
| Length | 1,270 km (790 mi) |
| Drainage basin | 146,000 km² (56,400 sq mi) |
| Average discharge | 5 m³/s (189 cu ft/s) |
| Source | Lac des Outaouais |
| Mouth | the St. Lawrence River |
| Countries | Canada |
| Tributaries | Rivière Kinojévis, Kipawa River, Rivière Dumoine, Noire River, Coulonge River, Rivière Rouge, Rivière du Nord, Blanche River, Montreal River and Mattawa River |
Data sources and license
- Natural Earth (public-domain geography): Public domain.
- Terrain Tiles / Mapzen (SRTM, GMTED2010, ETOPO1): Open elevation data; source attribution retained.
- Wikidata (lengths, areas, countries and other facts): CC0 1.0.
Map design and rendered images: Atlas of Maps, CC BY 4.0. Source databases retain their own licenses; the map license does not replace them.
Maps of the countries: Canada. Compare with the world rivers map.
Frequently asked questions
How long is the Ottawa River?
The Ottawa River is about 1,270 km (790 mi) long, with a drainage basin of about 146,000 km² (56,400 sq mi).
Where does the Ottawa River start and end?
The Ottawa River rises at Lac des Outaouais and flows into the St. Lawrence River.
Can I download a blank map of the Ottawa River?
Yes. The blank version keeps the relief, rivers and borders and the highlighted river but removes the place names. Both versions are free to download as PNG and as an A4 PDF.
Use this map
You can download, print and share this map for free, in class, in school projects, in presentations and on websites, as long as you credit the source: Ottawa River Map · Atlas of Maps (atlasofmaps.com), license CC BY 4.0.
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