Characteristics of the affected area | Consequence Category |
Population density | | Extent of destroyed or severely damaged infrastructures and services | |
Uninhabited area | OR | Area containing minimal infrastructures or services such as | Very Low |
- another dam in the Very Low Consequence category |
- a resources access road |
- farmland |
- a commercial facility without accommodations |
Occasionally inhabited area containing less than 10 cottages or seasonal residences | OR | Area containing limited infrastructures or services such as | Low |
OR | - another dam in the Low Consequence category |
Area containing a commercial facility that provides accommodation for less than 25 persons or that has less than 10 accommodation units (i.e., 10 cottages, 10 campsites, 10 motel rooms) | - a local road |
Permanently inhabited area containing less than 10 residences or occasionally inhabited and containing 10 or more cottages or seasonal residences | OR | Area containing moderate infrastructures or services such as | Moderate |
OR | - another dam in the Moderate Consequence category |
Area containing a seasonal commercial facility that provides accommodation for 25 or more persons or that contains 10 or more accommodation units or that operates year-round and provides accommodation for less than 25 persons or has less than 10 accommodation units | - a feeder road |
- a railway line (local or regional) |
- an enterprise with less than 50 employees |
- a main water intake upstream or downstream of the dam that supplies a municipality |
Permanently inhabited area containing 10 or more residences and less than 1,000 residents | OR | Area containing significant infrastructures or services such as | High |
OR | - another dam in the High Consequence category |
Area containing a commercial facility that operates year-round and provides accommodation for 25 or more persons or has 10 or more accommodation units | - a regional road |
- a railway line (transcontinental or transborder) |
- a school |
- an enterprise that has 50 to 499 employees |
Permanently inhabited area with a population of more than 1,000 and less than 10,000 | OR | Area containing major infrastructures or services such as | Very High |
- another dam in the Very High Consequence category |
- an autoroute or national highway |
- an enterprise that has 500 or more employees |
- an industrial park |
- a dangerous substances storage site |
Permanently inhabited area with a population of 10,000 or more | OR | Area containing substantial infrastructures or services such as | Severe |
- another dam in the Severe Consequence category |
- a hospital |
- a major industrial complex |
- a large dangerous substances storage site |