The Ottawa River: By the Numbers
| 1,271 | Length of the river in kilometres |
| 7,400 | Width of the river in metres at its widest |
| 15 | Width of the river in metres between Lac des Outaouais and Dozois Reservoir |
| 370 | The elevation drop in metres over its length |
| 90 | Depth of the river in metres at its deepest point at the Carillon Reservoir |
| 1,950 | Average flow in cubic metres per second at Carillon Dam |
| 8,190 | Maximum flow in cubic metres per second at Carillon Dam |
| 14,630,000 | Area of drainage basin in hectares |
| 1613 | The year Samuel de Champlain travelled up the river into Canada's interior |
| 50 | Number of major dams throughout watershed |
| 13 | Number of principal reservoirs through watershed |
| 30 | Number of water monitoring stations in watershed |
| 6 | Number of water monitoring stations on river itself |
| 764,000,000 | Estimated volume in litres of raw sewage spilled into the river in Ottawa, Aug. 4-15, 2006* |
| 562,500 | The number of dollars the City of Ottawa was fined for that spill |
| 1 | The Canadian dollar bill that used to carry an image of the Ottawa River |
Sources: Ottawa Riverkeeper, Ottawa River Heritage Designation Committee, National Capital Commission
*According to an agreed statement of facts from court proceedings related to charges laid against the city under the Ontario Water Resources Act. The city previously reported that 1.2 billion litres of raw sewage ended up in the river, but part of that represented a normal overflow, not a spill.