Legend
Optional
Mandatory
Structure
Number
Structure
Name
Inventory Date
(yyyy/mm/dd)
(Not entered in system)
Hydrotechnical
Scour/Erosion Evaluation
Unknown Foundations
Susceptibility Category:
Hydrotechnical
Est. Inst. Flow
Rate (m^3/s):
Design Discharge Water
Elevation (m):
Ice Conditions Present
Average Waterway
Velocity (m/s):
Return Period (years):
Design High Water
Clearance (m):
Ice Conditions Note:
Drainage Area (km^2):
Bankfull Width (m):
Channel Slope (m/m):
Bankfull Depth (m):
Hydrotechnical LOV
Susceptibility Category
Category: Description:
1
Low Risk
2
Moderately Susceptible
3
4
5
Definition
The structure has no perceivable scour/erosion risks.
The structure has historical scour/erosion issues that are being effectively
managed and/or the structure has some potential for minor bearing and approach
fill instabilities.
Highly Susceptible
The structure has a high risk of protective measures failure and potential
destabilization of abutment/pier foundations. However, there is little likelihood that
the structure will collapse
Critical Approaches
High risk of approach failure, but little likelihood the structure itself will collapse.
Critical Bridge Foundations High risk of foundation failure and likelihood of structure collapse.
Return Period
2 years
10 years
50 years
100 years
200 years
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